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PN junction explained

P-N Junction. One of the crucial keys to solid state electronicsis the nature of the P-N junction. When p-typeand n-typematerials are placed in contact with each other, the junction behaves very differently than either type of material alone. Specifically, current will flow readily in one direction (forward biased) but not in the other (reverse. PN junction is the partition between two different semiconductor material when a single material is doped with 2 different materials. Any p-type substance has 2 main materials first one is pure like silicon that is doped with the trivalent impurity such as boron A mobile electron or hole near the built-in electric field will be attracted and swept back into its original volume. At the junction there are two effects occurring (1) diffusion with electrons mov- ing from n-type to p-type and, (2) the built in electric field sweep- ing locally affected electrons back into the n-type volume PN junctions are fabricated from a monocrystalline piece of semiconductor with both a P-type and N-type region in proximity at a junction. The transfer of electrons from the N side of the junction to holes annihilated on the P side of the junction produces a barrier voltage. This is 0.6 to 0.7 V in silicon and varies with other semiconductors

The P-N Junction - HyperPhysics Concept

A PN junction is said to be forward-biased when the p-type region of a junction is connected to the positive terminal of a voltage source and the n-type region is connected to the voltage source's negative terminal The answer lies in understanding PN Junction. A PN junction is the basic building block of many semiconductor devices like diodes and transistors. Note:- I have written an interesting article which tells the story behind invention & discovery of PN Junction diode Formation of p-n Junction In actual practice, the PN junction is not formed just by bringing a p-type semiconductor block near to an n-type semiconductor block. Actually, p n junction is fabricated by special technique, namely growing, alloying and diffusing methods. The most common method of making p n junction is called Alloying A PN-junction diode is formed when a p-type semiconductor is fused to an n-type semiconductor creating a potential barrier voltage across the diode junction The effect described in the previous tutorial is achieved without any external voltage being applied to the actual PN junction resulting in the junction being in a state of equilibrium The term p/n junction refers to the joint interface and the immediate surrounding area of the two semiconductors. If the joint is made by two separate semiconductor crystals, this is a rough interface known as a grain boundary. A grain boundary has different electrical properties than a single crystalline interface

Question: What is P-N junction? Explain the formation of potential barrier and depletion layer? With no external voltage. A p-n junction is a junction formed by joining p-type and n-type semiconductors together in very close contact. The term junction refers to the boundary interface where the two regions of the semiconductor meet. If they were constructed of two separate pieces this would introduce a grain boundary, so p-n What Is a PN Junction Formation of pn Junction. In actual practice, a pn junction will not be formed if a p-type block is just brought in... Properties of pn Junction. At the instant of pn-junction formation, the free electrons near the junction in the n region... Biasing a pn Junction. In. This simple animation video clearly explains the topics P-N junction semi conductor or diode, what is forward bias and reverse bias, what is diffusion curren..

The diode or PN junction was the first form of semiconductor device to be investigated in the early 1940s when the first real research was undertaken into semiconductor technology. It was found that small point contact diodes were able to rectify some of the microwave frequencies used in early radar systems and as a result they soon found many uses explain the working of PN junction diode in forward and reverse biasing configuration please ? priya 6 years ago why the battery in reverse bias is greater than in forward bias. Thales 6 years ago I think I missed something. You say that the PN junction only starts to conduct current after the voltage aplied on the diode (Vd) reaches 0.7V, the barrier potential as you call it, but all the.

What is PN Junction - The Engineering Knowledg

  1. What is P-N Junction? Definition: A p-n junction is an interface or a boundary between two semiconductor material types, namely the p-type and the n-type, inside a semiconductor. The p-side or the positive side of the semiconductor has an excess of holes and the n-side or the negative side has an excess of electrons
  2. al single crystal semiconductor device whose one side is doped with acceptors and other side by donors. Doping with acceptor creates p type semiconductor while doping with donors produces n type. Thus a pn junction is formed in diode
  3. ..
  4. al semiconductor device. It's made up from a small piece of semiconductor material (usually Silicon), it allows the electric current to flow in one direction while opposes the current in other direction. In the Forward Bias, the diode allows the current to flow in uni-direction
  5. g the barrier voltage. The majority of externally applied potential forces move the carrier toward the junction where recombination occurs, allowing current to flow. The reverse-biased PN junction produces almost no current

A P-N junction is formed by two layers of doped Gallium Arsenide where a High reflective coating is applied to one end of the junction and a partial reflective coating at the other end PN Junction diode is a device made of two semiconductor material joined together with the required amount of impurity. These materials are N-type, having electrons are majority carrier and P-type material, having holes are majority carrier. With proper biasing, PN diode allows current to flow in SINGLE DIRECTION. A PN Junction Diode is one in all the only semiconductor devices around, and that. P-n junction formation/ Fabrication of PN Junction. As we know the elements around us are classified into three categories i.e. insulator, conductor, semiconductor, etc depending upon their electrical conductivity. According to the Energy Band theory (explained in Semiconductor guide), the conductivity of semiconductors lies between conductors and insulators i.e. conductors have high.

The P-N Junction Explained written by: Ricky • edited by: Lamar Stonecypher • updated: 7/9/2009 A junction refers to a place where two or more things form a connection. Find out about the PN junction and its role in semiconductor electronics Introduction In our previous articles we have been building the base for studying digital electronics in detail. Just to recap what we have covered. PN junction explained Animation How a P N junction semiconductor works . This simple animation video clearly explains the topics P-N junction semi conductor or diode, what is forward bias and reverse bias, what is diffusion curren.. P-N Junction. One of the crucial keys to solid state electronicsis the nature of the P-N junction. When p-typeand n-typematerials are placed in contact with each.

When the junction diode is biased in the reverse direction, the majority charge carriers are attracted by the respective terminals away from the PN junction, thus avoiding the diffusion of electrons and holes at the junction. There will be a small amount of current called as leakage current due to minority charge carriers at the junction. This small current is called as drift current. When the. The junction is biased with a voltage V a as shown in Figure 4.2.1. We will call the junction forward-biased if a positive voltage is applied to the p-doped region and reversed-biased if a negative voltage is applied to the p-doped region. The contact to the p-type region is also called the anode, while the contact to the n-type region is called the cathode, in reference to the anions or. pn-junction-> GaAs_pn_junction_1D_nn3.in / *_nnp.in - input file for the nextnano 3 and nextnano++ software This tutorial aims to reproduce figure 3.1 (p. 51) of Joachim Piprek's book Semiconductor Optoelectronic Devices - Introduction to Physics and Simulation (Section 3.2 pn-Junctions). Doping concentration. The structure consists of 300 nm GaAs

If PN junction is biased in such a way, its P-side is connected with a negative voltage while N-side is connected with a positive voltage, it will constitute a reverse biased condition where no current flow between the junction, resulting maximum resistance. In this condition, a voltage across the cathode will be relatively larger than the anode side. Now, P-region is connected with the. To conclude about pn junction characteristics, we need to get an answer to the first question we have raised - What is the use of pn junction? From the analysis of both forward bias and reverse bias, we can arrive at one fact - a pn junction diode conducts current only in one direction - i.e during forward bias. During forward bias, the diode conducts current with increase in voltage. During reverse bias, the diode does not conduct with increase in voltage (break down usually results. 15 Two pn Junctions 25 16 An npn Junction Transistor 27 1 Introduction This is a non-rigorous explanation to give you an understanding of the back- ground for the operation of semiconductor diodes and the Diode Equation. This explanation is intended to ll in part of the missing background in H& H

Connect the circuit as shown in figure (1) using silicon PN Junction diode. 2. Vary V f gradually in steps of 0.1 volts upto 5volts and note down the corresponding readings of I f . 3. Step Size is not fixed because of non linear curve and vary the X-axis variable (i.e. if output variation is more, decrease input step size and vice versa). 4. Tabulate different forward currents obtained for. This video deals with step by step implementation for PN Junction for plotting IV characteristics, Electric field across junction, energy band diagram for po.. The equilibrium condition for a pn-junction is achieved by a small transfer of electrons from the n region to the p region, where they recombine with holes. This leads to a depletion region(depletion width = wp+ wn), i.e. the region around the pn-junction only has very fe What Is a P-N Junction Diode? A p-n junction diode is a basic semiconductor device that controls the flow of electric current in a circuit. It has a positive (p) side and a negative (n) side. If..

A solar cell is essential a PN junction with a large surface area. The N-type material is kept thin to allow light to pass through to the PN junction. Light travels in packets of energy called photons. The generation of electric current happens inside the depletion zone of the PN junction. The depletion region as explained previously with the diode is the area around the PN junction where the. PN junction diode is symbolically represented as shown in picture. The direction of arrow is the direction of conventional current flow (under forward bias). Now lets try applying an external voltage to the pn junction diode.rnal voltage is called as . The process of applying an exte biasing. There are two ways in which we can bias a pn junction diode. 1) Forward bias. and 2) Reverse. zIn thermal equilibrium, the PN diode has a potential difference for electrons, and a potential difference for holes, and an electric field that both see, with zero voltag

The P-N Junction Solid-state Device Theory Electronics

What is Diode? Know PN Junction Theory, Construction

Forward bias of PN junction diode. The diode is forward biased. The positive terminal of the battery is connected to the anode of a diode and negative terminal to the cathode.; When battery is not connected, there is a barrier potential of 0.3 V for Silicon and 0.7 V for Germanium across the across the P-N junction of a diode The VI Characteristics of the PN Junction Diode in Forward Bias. In forward bias condition, the diode gets enough voltage so that it can exceed the value of threshold voltage and provides the carriers with sufficient energy so that it can overcome barrier potential. Hence the forward current is generated in the circuit. The diode tends to conduct once the threshold is crossed. P-N Junction. PN junction diode parameters like reverse saturation current, bias current, reverse breakdown voltage and barrier voltage are dependent on temperature. Mathematically diode current is given by I = I S ∗ (e x p ((V / (n ∗ k ∗ T / q))) - 1 Forward-biased junction : When the p-side of junction is connected to the positive terminal of a battery and the n-side of junction is connected to the negative terminal, the p-n junction is said to be a forward-biased junction. Reverse-biased junction :If the positive terminal of the battery is connected to the n-side of junction and the negative terminal on the p-side, the p-n junction. The PN Junction forms a basic semiconductor device called diode. In a PN-junction, when the electrons and holes move to the other side of the junction, they leave behind exposed charges on dopant atom sites, which are fixed in the crystal lattice and are unable to move. The electric field Ê forms between the positive ions cores in the n-type material and negative ion cores in the p-type.

Forward and Reverse Bias of a PN Junction (Explained

Junction Diode as a rectifier. The process in which alternating voltage or alternating current is converted into a direct voltage or direct current is known as rectification.The device used for this process is called as a rectifier.The junction diode has the property of offering low resistance and allowing current to flow through it, in the forward biased condition The P-N junction diode appeared in the year 1950. It is the most essential and the basic building block of the electronic device. The PN junction diode is a two-terminal device, which is formed when one side of the PN junction diode is made with p-type and doped with the N-type material. The PN-junction is the root for semiconductor diodes PN junction diode is one of the fundamental elements in electronics. In this type of diode, we dope one side of a semiconductor piece with an acceptor impurity and another side with a donor impurity.A PN junction diode is a two-terminal electronics element, which can be classified as either 'step graded' or 'linear graded'

PN Junction formation and How it work

When a p-n junctio is formed, some free electrons from the n-type semiconductor cross the junction and fill the vacant space in the p-type junction. This vacant space which was initially a hole, once filled with the electron, the incomplete bond with a neighbouring silicon atom of the impurity atom is completed Formation of a PN-Junction. Overview. Joining n-type material with p-type material causes excess electrons in the n-type material to diffuse to the p-type side and excess holes from the p-type material to diffuse to the n-type side. Movement of electrons to the p-type side exposes positive ion cores in the n-type side while movement of holes to the n-type side exposes negative ion cores in the. A typical VI characteristic for a forward biased PN junction is shown in the figure below. It is seen that the forward current rises exponentially with the applied forward voltage. However, at ordinary room temperature, a potential difference of about 0.3V is required before a reasonable amount of forward current starts flowing in a germanium junction. This voltage is known as threshold.

What is a p n Junction? - Diffusion and Depletion layers

When the p n junction is reversed biased, the following points are concluded. They are as follows:-The potential barrier of the junction is strengthened. The junction offers high resistance to the flow of current, known as Reverse Resistance (R r). Practically, no current flows in the circuit due to the establishment of a very high resistance path. It is seen that practically no current flows. pn Junctions Murray Thompson Sept. 13, 1999 1 Introduction This is a non-rigorous explanation to give you an understanding of the background for the operation of semiconductor diodes and the Diode Equation. This explanation is intended to fill in part of the missing background in H& H. We advise 623 students to read R.E. Simpson's book ``Introductory Electronics for Scientists and Engineers.

PN Junction diodes are made by doping the trivalent element into one side of an intrinsic semiconductor like silicon and doping pentavalent to another side of it. The side of the trivalent element will become P-type material where the side of the pentavalent element will become N-type material. As far as both types of material are at the same substrate, therefore a point of conjunction will. Explain briefly, with the help of a circuit diagram, how a p-n junction diode works as a half wave rectifier. asked Sep 27, 2019 in Physics by Deepak01 ( 58.7k points) electronic devic Formation of Depletion Layer In PN Junction . This recombination of electrons and holes produces a narrow region at junction called depletion layer. Potential Barrier. As the depletion layer built up a different of potential appears across the junction this difference of potential at junction is called potential barrier. The value of potential barrier V B is 0.3 volt for germanium and 0.7.

When a PN Junction Diode is connected in reverse bias, no current flowing through it. In that time, both the P and N regions act as electrodes and the depletion region between them acts as a dielectric medium What is a PN junction diode [Image Credit] A PN Junction diode is a 2 terminal device fabricated by joining P-type and N-type semiconductors chemically (image given above) and . It allows electric current to pass only in one direction while blocks in the other direction. The direction of the current depends upon the biasing of the diode Cross-section of a p-n junction pn-juntion-Diode. We will assume, unless stated otherwise, that the doped regions are uniformly doped and that the transition between the two regions is abrupt. We will refer to this structure as an abrupt p-n junction. Frequently we will deal with p-n junctions in which one side is distinctly higher-doped than the other. We will find that in such a case only. Explain what is a p-n junction? The contact surface between the layers of p-type and n-type semiconductor pieces placed together so as to form a p-n junction is called the p-n junction. 35

PN Junction Diode and Diode Characteristic

P/N Junctions and Band Gaps - Solar Cell Centra

Definition of P-N Junction Diode and Zener Diode. Diode is an electronic component that allows the flow of electricity in one direction without resistance (or with very little resistance) while in the opposite direction has an infinite (or at least very high) resistance PN Junction Diode : I-V Characteristics üThe barrier increase reduces the majority carrier diffusion to a negligible level üThe p-side electrons and n-side holes can wander into the depletion region and be swept to the other side à reverse I(nàp) üReverse bias situation àan increase of the potential hill üBeing associated with minority carriers, the reverse bias current is expected to.

A PN junction is formed by joining p-type and n-type semiconductors together in a single crystal lattice. The term junction refers to the boundary interface where the two regions of the semiconductor meet. If the junction was constructed of two separate pieces this would introduce a discontinuity in the crystal lattice, so PN junctions are created in a single crystal of semiconductor by introducing certain impurities called dopants, for example by ion implantation, diffusion, or by epitaxy. A PN Junction Diode is one of the simplest Semiconductor Devices around, and which has the characteristic of passing current in only one direction only. However, unlike a resistor, a diode does not behave linearly with respect to the applied voltage as the diode has an exponential current-voltage ( I-V ) relationship and therefore we can not described its operation by simply using an equation such as Ohm's law PN junction diode; The LED emits light. The PN junction diode cannot emit light. The LED uses GaAs, GaAsP or GaP material. The PN junction diode silicon or germanium material. In LED all energy converted into a light: In PN junction diode all energy converted into a heat. It's on state voltage ranges between 1.2 V to 2.0 V. Its on-state voltage drop is 0.7 V for silicon diode and 0.3 V for. Explain the function of a P-N junction diode; Explain forward and reverse biased characteristics of a Silicon diode; Explain forward and reverse biased characteristics of a Germanium diode; Structure of P-N junction diode. The diode is a device formed from a junction of n-type and p-type semiconductor material. The lead connected to the p-type material is called the anode and the lead connected to the n-type material is the cathode. In general, the cathode of a diode is marked by a solid. doped shallow junctions and halo doping for better SCE), band-to-band tunneling (BTBT) dominates the pn junction leakage [14]. This leakage mechanism is explained in Sec-tion II-A1. Fig. 4 BTBT in reverse-biased pn junction [14]. 1) Band-to-Band Tunneling Current:High electric field 10 V/cm across the reverse-biased pn junction causes.

What is a pn Junction ? Discuss the behaviour of a pn

Diodes explained - diode - working principle pn junction | forward and reverse biasing | iv curve july 16, 2020 july 16, 2020 by crackedconsole a diode is a two terminal electronic component that conducts current primarily in one direction , it has low (ideally zero) resistance in one direction, and high (ideally infinite) resistance in the. A diode is a two terminal electronic component. Answer : i)P-N junction diode: It is a semiconductor device in which half of its region is P-type and other half is N-type. ii) Depletion layer: The region where free electrons and free holes are absent and negative terminal is connected to p-side of p-n junction diode, it is said to be reverse bias. physics The pn junction is an essential component for junction field effect transistors (JFETs) as it controls the amount of carriers in the channel. Thus, the quality of the pn junction determines the properties of JFETs. In diamond, the first ultraviolet light emitting diodes with the vertical pn junction were achieved in 2001 [1]. Until heavily phosphorus doped n-type homoepitaxial diamond onto (0.

Video: Animation How a P N junction semiconductor works

In this video, the PN junction diode has been explained. And the working of this PN junction diode under forward and reverse bias has been explained. By watching this video, you will learn the following topics: 0:16 What is PN Junction Diode 1:48 The depletion region in the PN junction Diode 3:50 Unbiased PN Junction Diode 7:00 Forward-Biased PN Junction 9:46 Reverse Biased PN Junction What is. Although the basic PN junction had been in use for many years, it was not until 1962 that the LED was developed and its action started to be understood. Light emitting diode, LED circuit symbol LED technology: how a LED works. The LED is a specialised form of PN junction that uses a compound junction. The semiconductor material used for the junction must be a compound semiconductor. The.

Here the PN Junction diode is used to convert the Alternating Current (AC) to Direct Current (DC). Obviously, it is a half wave rectifier circuit. During the positive half cycle, the PN Junction diode will conduct and during the negative half cycle, it blocks the flow of current During the formation of p-n junction.Due to the diffusion of electrons and holes across the junction a region of(immobile) positive charge is created on the n-side and a region of(immobile) negative charge is created on the p-side, near the junction; this is called depletion region. Barrier potential is formed due to loss of electrons from n-region and gain of electrons by p-region. Its polarity is such that it opposes the movement of charge carriers across the junction In a PN junction diode holes are the majority carriers on P side whereas electrons are the majority carriers on n-side. The process of diffusion takes place due to which the majority carriers diffuse from one region to the other so the P-region becomes less positive and the n-region becomes less negative

This course presents in-depth discussion and analysis of pn junction and metal-semiconductor contacts including equilibrium behavior, current and capacitance responses under bias, breakdown, non-rectifying behavior, and surface effect. You'll work through sophisticated analysis and application to electronic devices. At the end of this course learners will be able to: 1. Analyze pn junction at. Lecture 16 - The pn Junction Diode (II) Equivalent Circuit Model November 3, 2005 Contents: 1. I-V characteristics (cont.) 2. Small-signal equivalent circuit model 3. Carrier charge storage: diffusion capacitance Reading assignment: Howe and Sodini, Ch. 6, §§6.4, 6.5, 6.9 Announcements: Quiz 2: 11/16, 7:30-9:30 PM, open book, must bring calculator; lectures #10-18. 6.012 - Microelectronic. As we have discussed that the diode is made of PN junction having one side of the P-type material and another N-type material. A depletion region is formed at the time of manufacturing, where electrons and holes combine to form ions and no carrier is available for conduction in the region. N-region has free electrons as majority carriers and P-region has a hole (absence of an electron). During.

PN Junction Diode » Electronics Note

PN Junction Diode Characteristics[ V-I Forward and Reverse] PN Junction diode is a semiconductor devices which conducts from only one side. Hence it is an unidirectional device. As the name stands PN junction Diode is made up of P type and N Type semiconductor material. It is used majorly in rectifier and voltage regulator circuits. PN Junction diode characteristics provide us the information. S = PN junction saturation current, in amps (typically 1 picoamp) e = Euler's number ≈ 2.718281828 q = Electron unit charge, 1.6×10−19 coulombs V D = Voltage across the PN junction, in volts N = Nonideality coefficient, or emission coefficient (typically between 1 and 2) k = Boltzmann's constant, 1.38×10−23 T = Junction temperature, degrees Kelvin At first this equation may seem.

What is a pn Junction ? Discuss the behaviour of a pn

PN Junction Diode Characteristics - Explained in Detail

Homojunction-based optoelectronic components have been developed since the 1960s, which represent the birth of light emissions on semiconductors.These homojunctions are formed from two blocks of the same type but of different doping to form a PN junction. Figure 1.9 shows the bands of a live powered homojunction structure. We observe that the carriers' recombination is prominent in area P State five (5) application of PN Junction, and explain the property of the PN junction that make those application possible And, the two pn junctions formed in this transistor are as follows: Emitter-Base junction: It is a junction where the positive doped emitter meets with the base that is a negative region. It is represented by 'EB' and has an 'Emitter' and an 'Emitter region' just next to the 'Base region' It is consist of two pn junctions. One junction is forward-biased, and the other is reverse-biased. Majority of careers are moving from E across forward-biased pn-junction. B layer is usually thin, but characterised with high resistivity, so majority of careers will flow through into the C layer (due to different doping levels of these materials). Currents in BJT transistor can be found with. PN-junction diode is a bipolar device means current conduction happen due to both minority and majority (now retired), I found Mr. Choudhary's explanation no more difficult to read and understand than any American engineer's writing. Engineers as a group are infamous for not being able to write coherently, as most other technical writers can confirm. Log in or register to post Comment.

Junction Voltage Of Germanium DiodeREVERSE SATURATION CURRENT in p-n Junction Diode || in

PN Junction - Definition, Formation, Application, VI

I'm trying to understand a reverse biased PN junction, conceptually. For reference, I'll adopt the convention that the P-type is on the left, and N-type is on the right. So without a bias, the depletion region forms and there should be a positive electric-potential step crossing from P to N. This potential step deters more holes from diffusing into the N side, and electrons from diffusing into the P side. I understand that applying a forward bias will reduce this barrier, allowing carriers. In his video series Physics in Your Life, Dr. Richard Wolfson, Professor of Physics at Middlebury College, explained why transistors—one of the most common semiconductors on Earth—could be the greatest invention of the 20th century. Much of a transistor revolves around a component called a PN junction. Nature Abhors a Vacuum. Dr. Wolfson explained that the transistor is at the heart of all. Explanation. name. string. Name of the junction. pn_bar. float \(>\) 0. Rated pressure of the junction [bar]. Also the initial value for the calculation. tfluid_k. float \(\ge\) 0. Fluid temperature at junction [K] height_m. float \(\ge\) 0. The height above sea level of the junction [m] in_service. boolean. True / False. Specifies if the bus. Operation of Gunn diode is explained with. The transferred electrons effect; The avalanche transmit time effect; The tunneling effect; The Schottky effect; Answer - (3) 8. Tunnel Diode is employed in . The Micro-wave Oscillator design; The RF Oscillator design; An audio oscillator design; A Video amplifier design; Answer - ( 3 ) 9. Reverse saturation current of the PN junction diode is. The pn junction In the interface layer between the p-type and n-type material, a nonconducting layer called the depletion region occurs. This is because the electrical charge carriers in doped n-type silicon (electrons) and p-type silicon (holes) attract and eliminate each other in a process called recombination. By manipulating this nonconductive layer, p-n junctions are commonly used as.

pn Junction Diode and Its Working Principle Electrical

GaAs_pn_junction_1D_ForwardBias_nnp.in. The input file dicussed below is based on the nextnano³ tutorial which contains more explanation and many figures. It is available here. #*****! # ! # pn_junction_GaAs_1D_nnp.in ! # ----- ! # ! # This is an input file for nextnano++ to calculate the band edges of a ! # simple pn-junction with classical charge densities. ! # ! # It's part of the 1D pn. Explanation:-When a PN-junction is reverse biased the holes in the P-region are attracted towards the negative terminal of the applied voltage source, whereas the electrons in the N-region are attracted to the positive terminal of the voltage source. Thus the majority carriers are drawn away from the junction. This widens the depletion layer and increases the barrier potential. The increased. Silicon pn-junction: (left) Fabricated by the implantation or diffusion of boron atoms into an n-type (phosphorus doped) silicon wafer. (middle) Concentration of donors and acceptors in the wafer. (right) Cross section of a pn-junction. n-type Silicon Dopant concentration Depth Donors Acceptors p-type Silicon n p+ 6 Introduction to Electronic Devices, Fall 2006, Dr. D. Knipp Diodes 3.2 Pn.

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