DIODES. Electrical Device > Chip of semiconducting material doped with impurities to create a p-n junction. > Allows current to move through it in one.

Slides:



Advertisements
Similar presentations
Semiconducting junctions
Advertisements

Instructor Name: (Your Name)
Physics of Semiconductor Devices. Formation of PN - Junction When a P-type Semiconductor is joined together with an N-type Semiconductor a PN junction.
Semiconductor Devices Lecture 05
Kristin Ackerson, Virginia Tech EE Spring A DIODE IS A SEMICONDUCTER DEVISE, IT A ACTIVE COMPONENT WHOSE PROVIDE BEST FLOW OF CURRENT. IT IS A PN.
Semiconductor Light Detectors ISAT 300 Foundations of Instrumentation and Measurement D. J. Lawrence Spring 1999.
Conduction in Metals Atoms form a crystal Atoms are in close proximity to each other Outer, loosely-bound valence electron are not associated with any.
Diodes Benchmark Companies Inc PO Box Aurora CO
D/A conversion Semiconductors
Photo Courtesy of Tom Ferguson. 5.8 kW Array: 4 Rows of 7 Panels Photo Courtesy of Tom Ferguson.
Doped Semiconductors Group IVA semiconductors can be “doped” by adding small amounts of impurities with more or fewer than 4 valence electrons. e.g. add.
Silicon Computer Chips Review Band Theory Expand to Conductors/ Semiconductors/ Insulators Intrinsic vs. Doped Semiconductors n-type and p-type Semiconductors.
Putting Electrons to Work Doping and Semiconductor Devices.
Unit-II Physics of Semiconductor Devices. Formation of PN Junction and working of PN junction. Energy Diagram of PN Diode, I-V Characteristics of PN Junction,
Lecture 3. Intrinsic Semiconductor When a bond breaks, an electron and a hole are produced: n 0 = p 0 (electron & hole concentration) Also:n 0 p 0 = n.
Lesson 23: Introduction to Solar Energy and Photo Cells ET 332a Dc Motors, Generators and Energy Conversion Devices 1Lesson a.pptx.
Detectors The energy loss of particles in matter can be used detect and identify those particles. There are different types of “detectors”: - Gas-filled.
MOS Capacitors ECE Some Classes of Field Effect Transistors Metal-Oxide-Semiconductor Field Effect Transistor ▫ MOSFET, which will be the type that.
Characteristics, Structures, and Applications.  Description of LED and Infrared LED  Schematic Symbol  Structure  Function and Characteristics  Application.
WEEK ONE TOPIC: ELECTRONICS SOLID STATE MATERIALS  CONDUCTORS  INSULATORS  SEMICONDUCTORS.
OBJECTIVE Objective of this practical is to learn about diode and identify its terminals.
The Devices: Diode.
Depletion Region ECE Depletion Region As electrons diffuse from the n region into the p region and holes diffuse from the p region into the n region,
A semiconductor material is one which conducts only when excited.
ELECTRICITY & MAGNETISM BY: Arana Rampersad Form: 5D Physics.
Chapter 4. Diodes. Copyright  2004 by Oxford University Press, Inc. Diode Simple non-linear device 2 terminal device, uni- or bi-directional current.
1 Semiconductor Detectors  It may be that when this class is taught 10 years on, we may only study semiconductor detectors  In general, silicon provides.
Audio Amplifiers. Question: If you install a pocket radio’s batteries backward, it won’t work because its 1.speaker will move the wrong direction. 2.parts.
Week 11b Lecture Materials Diodes and some of their uses: Review of pn-diode structure Diode I-V characteristics: Actual characteristic – exponential Ideal.
LIGHT EMITTING DIODES A brief analysis. What is an LED? A light emitting diode (LED) is essentially a PN junction opto- semiconductor that emits a monochromatic.
Series Connection Series Connection Requires more voltage The supply voltage should be the sum of the rated voltage required for LED.
Ohm's Law Ohm's law is an assertion that the current through a device is always directly proportional to the potential difference applied to the device.
Chapter 1 : Diodes Gopika Sood Assistant Professor in Physics
Chemistry XXI M2. Inducing Electron Transitions. M1. Controlling Electron Transfer Analyze electron transfer between coupled systems. Explore the effect.
Introduction To Semiconductors
Semiconductors. A semiconductor is a material whose resistance is between that of a conductor and an insulator. Eg Silicon.
Semiconductor Devices In a typical audio system, diodes are used in the power supply to create a dc voltage from the ac voltage present at the wall socket.
Gentle Intro to Semiconductors ENGN/PHYS 207. The ubiquitous LED.
Review: Most semiconductors are made of a poor conductor that has had impurities (atoms of another material) added to it. The process of adding impurities.
P-N Junction Diode Topics covered in this presentation:
Fundamental concepts of integrated-circuit technology M. Rudan University of Bologna.
Lecture 7.2 ChemFET Sensors. Bipolar Transistor Combination of two back-to-back p-n junctions P-N-P or N-P-N.
Disclaimer: This content is facilitated by a team of classteacher from web resources. Hence, claiming no copyright issues on this. Any concerns can be.
Lecture 9 OUTLINE pn Junction Diodes – Electrostatics (step junction) Reading: Pierret 5; Hu
Introduction to Transistors
Electronics Devices and Circuit Theory 10th Edition - Boylestad Electronics Fundamentals 8 th edition - Floyd/Buchla Majority and Minority Carriers Majority.
By Squadron Leader Zahid Mir CS&IT Department, Superior University PHY-BE -13 Light Emitting Diode & Tunnel Diode.
1. Unit I: Semiconductor Diodes and Applications Before we start with Electronics Let us review the Basics of Electricity Q. What are the two main quantities.
Power Semiconductor Devices Power Diodes Cross-sectional view of a pn- junction diode intended for power applications. I-V characteristics of a pn- junction.
1 Higher Physics Unit 3 Optoelectronics Semiconductors.
Physics of Semiconductor Devices
“SEMICONDUCTORS”.
Full-Wave (Bridge) Rectifier
SMART LIGHTING Diodes K. A. Connor Mobile Studio Project Center for Mobile Hands-On STEM SMART LIGHTING Engineering Research Center ECSE Department Rensselaer.
NEEP 541 Ionization in Semiconductors Fall 2002 Jake Blanchard.
PRACTICAL # 11 Introduction to light emitting diode (LED), its working principle and terminal identification By:Engr.Irshad Rahim Memon.
By Squadron Leader Zahid Mir CS&IT Department, Superior University PHY-BE -04 PN Junction.
Introduction to Electronics
Basic electronic components A review
Based on current conduction, materials are classifieds as 1)Insulators Ex: Wood, Mica, Diamond 2) Conductors Ex: Copper, Aluminium 3) Semiconductors Ex:
Slide 1EE40 Fall 2007Prof. Chang-Hasnain EE40 Lecture 32 Prof. Chang-Hasnain 11/21/07 Reading: Supplementary Reader.
Day 116, Tuesday, 8 March, 2016 Diodes and Transistors Warm Up Teenage Communication Electronics Diodes rectifiers Transistors Amplifiers Elements in Logic.
ELECTRONICS. FUNDAMENTALS OF ELECTRONICS ELECTRONICS Electronics is the branch of physics which deals with development of electron-emitting devices, there.
Light Emitting Diodes(LED) and Organic Light Emitting Diodes(OLED)
Solid-State Electronics Chapter 29 Solid-State Electronics Chapter 29 In this chapter you will: Distinguish among electric conductors, semiconductors,
INTRODUCTION TO SEMICONDUCTORS
COURSE NAME: SEMICONDUCTORS Course Code: PHYS 473.
PHYS208 - spring page 1 PHYS208 Lecture Wednesday 14 th April 2010 Semiconductors Impurities - doping.
LTFY – Physics and Engineering
Chapter 26 Optoelectric Devices.
Presentation transcript:

DIODES

Electrical Device > Chip of semiconducting material doped with impurities to create a p-n junction. > Allows current to move through it in one direction. (One way valve).

pn-Junction > Boundary between n-type (Donor) and p-type (Acceptors) doped impurities.

Applications > Radio Modulation > Power Conversion > Over Voltage Protection > Logic Gates > Radiation Detectors > Temperature Measurements > Current Steering > Light Source (LED)

LED of Shapes &Sizes

LEDs > Small > Bright > Uniform illumination > Inexpensive > Easily Strobed > Low Temperature > Limited Wear & Tear > Different colors = Better Visibility > Synchronized with Imaging