Animation Demonstration No. 2. Interaction of Light with Semiconductors Normally a semiconductor material has only a few thermally excited free electrons.

Slides:

Advertisements

Similar presentations

Solar cells Yogesh Wakchaure.

Advertisements

Semiconductor Device Physics

The Semiconductor in Equilibrium (A key chapter in this course)

Coulomb Interaction in quantum structures - Effects of

CHAPTER 3 Introduction to the Quantum Theory of Solids

EE105 Fall 2007Lecture 1, Slide 1 Lecture 1 OUTLINE Basic Semiconductor Physics – Semiconductors – Intrinsic (undoped) silicon – Doping – Carrier concentrations.

Normalized plot of n 0 /N D as a function of temperature. This plot is for N D = cm  3. Figure

PV Panels and P N Junctions How PV Panels work Or An Introduction to the World of Microelctronics.

Chapter 29 Solid State Electronics

Electrons and Holes ECE Intrinsic Carrier Concentration Intrinsic carriers are the free electrons and holes that are generated when one or more.

By Squadron Leader Zahid Mir CS&IT Department, Superior University PHY-BE -02 Semiconductors.

Electron And Hole Equilibrium Concentrations 18 and 20 February 2015  Chapter 4 Topics-Two burning questions: What is the density of states in the conduction.

Electron And Hole Equilibrium Concentrations 24 February 2014  Return and discuss Quiz 2  Chapter 4 Topics-Two burning questions: What is the density.

EE580 – Solar Cells Todd J. Kaiser Lecture 04 Semiconductor Materials Chapter 1 1Montana State University: Solar Cells Lecture 4: Semiconductor Materials.

Light-Generated Current

Incident light with an energy of hv>Eg excites an electron and causes it to jump from the valence band to the conduction band, thereby creating an electron-hole.

Basic Electronics By Asst Professor : Dhruba Shankar Ray For B.Sc. Electronics Ist Year 1.

NEEP 541 Ionization in Semiconductors - II Fall 2002 Jake Blanchard.

S. Kugler: Lectures on Amorphous Semiconductorsa 1 Optical properties.

1. A photoresistor is formed from a square 1 cm x 1 cm slab of GaAs. Light of wavelength 830 nm falls onto it at a power density of 1, generating electron-hole.

By Squadron Leader Zahid Mir CS&IT Department, Superior University PHY-BE -03 Semiconductors (Continued)

Mapping free carrier diffusion in GaAs with radiative and heat- generating recombination Tim Gfroerer and Ryan Crum Davidson College, Davidson, NC with.

Solar Cells Solar cells are made of two types of silicon Normal silicon has no free electrons N-type silicon has been doped with phosphorus to give it.

LECTURE OUTLINE Electronic Properties 2 Electronic Properties 2.

Luminescence basics Types of luminescence

Extended Questions- The Answers

LECTURE LECTURE OUTLINE Weekly Deadlines Weekly Deadlines Electronic Properties I Electronic Properties I.

Introduction to semiconductor technology. Outline –4 Excitation of semiconductors Optical absorption and excitation Luminescence Recombination Diffusion.

1 Stephen SchultzFiber Optics Fall 2005 Semiconductor Optical Detectors.

Photoluminescence and Photocurrent in a Blue LED Ben Stroup & Timothy Gfroerer, Davidson College, Davidson, NC Yong Zhang, University of North Carolina.

1 EE 2 Fall 2007 Class 9 slides. 2 Outline 1.Review of last class 2.Extrinsic semiconductors 3.Donor and acceptor impurities 4.Majority and minority carries.

BASICS OF SEMICONDUCTOR

Notes 27 February 2013.

Slide # 1 Hydrogenic model of doping impurities The simple model for a hydrogen atom can be used to describe the behavior of an impurity in a semiconductor.

Silicon.  Occurs as silica (SiO 2 ) & other silicates.  Hard & Brittle.

Science 8: Unit C – Light and Optical Systems Topic 3: Refraction.

Animation Demonstration No. 1. Interaction of Light with matter When light is incident on a material.

Carrier generation and recombination A sudden increase in temperature increases the generation rate. An incident burst of photons increases the generation.

Introduction to Semiconductors CSE251. Atomic Theory Consists of Electron, proton, neutron Electron revolve around nucleus in specific orbitals/shells.

Issued: May 5, 2010 Due: May 12, 2010 (at the start of class) Suggested reading: Kasap, Chapter 5, Sections Problems: Stanford University MatSci.

L.E.D. Labs. Background Light is transmitted as electromagnetic waves in tiny packets called photons. The energy associated with each photon is inversely.

Energy Bands and Charge Carriers in Semiconductors

© Electronics ECE 1312 EECE 1312 Chapter 2 Semiconductor Materials and Diodes.

ELECTRONIC DEVICES AND CIRCUITS ( )

Operational Amplifier

EE 315/ECE 451 Nanoelectronics I

“Semiconductor Physics”

Conduction of Electricity in Solids

Photo Detectors.

I I T M SEMICONDUCTOR Presentation On IITM, E C-2ND YEAR 0915EC081070

Introduction to Solid-state Physics Lecture 2

Chapter 4 Excess Carriers in Semiconductors

Basic Semiconductor Physics

Review of semiconductor physics

Energy Band Diagram (revision)

Routing Valley Excitons with a Metasurface

Electronic Fundamental Muhammad Zahid

More Wave Equation Solutions Leading To Energy Bands 23 and 25 January 2017.

More Wave Equation Solutions Leading To Energy Bands 3 and 5 February 2014.

Solar cells Yogesh Wakchaure.

EE105 Fall 2007Lecture 1, Slide 1 Lecture 1 OUTLINE Basic Semiconductor Physics – Semiconductors – Intrinsic (undoped) silicon – Doping – Carrier concentrations.

Solar cells Yogesh Wakchaure.

PRINCIPLE AND WORKING OF A SEMICONDUCTOR LASER

More Wave Equation Solutions Leading To Energy Bands 2 and 4 February 2015.

Lecture 1 OUTLINE Basic Semiconductor Physics Reading: Chapter 2.1

PDT 264 ELECTRONIC MATERIALS

More Wave Equation Solutions Leading To Energy Bands 30 January And 1 February 2019.

Types of Semiconductor Materials By Dr

First Brillouin zone of FCC lattice and the band diagram (Do you see any gaps?)

Presentation transcript:

Animation Demonstration No. 2

Interaction of Light with Semiconductors Normally a semiconductor material has only a few thermally excited free electrons in conduction band at room temperature Conduction Band Valance Band Bandgap

Interaction of Light with Semiconductors Absorption of a photon with energy larger than or equal to the Energy Bandgap makes bound electrons jump into conduction band and produce an electron – hole pair. Conduction Band Valance Band electron – hole pair (EHP)

Interaction of Light with Semiconductors The number of carriers – electrons in conduction band and holes in valance band thus keep on increasing with larger amounts of incident light flux Conduction Band Valance Band

Interaction of Light with Semiconductors The number of carriers – electrons in conduction band and holes in valance band thus keep on increasing with larger amounts of incident light flux Conduction Band Valance Band

Interaction of Light with Semiconductors The number of carriers – electrons in conduction band and holes in valance band thus keep on increasing with larger amounts of incident light flux Conduction Band Valance Band