'Radiative recombination' presentation slideshows

Energy and Nanotechnology Issues and Opportunities in Photovoltaics

Energy and Nanotechnology Issues and Opportunities in Photovoltaics. S. Ismat Shah Physics and Astronomy Materials Science and Engineering Senior Policy Fellow Center for Energy and Environment Policy University of Delaware. ICNMRE, Al Maghrib , 2010. Richard Smalley (1943 -2005)

1.27k views • 94 slides

Semiconductor Sources for Optical Communications

Semiconductor Sources for Optical Communications. Mr. Gaurav Verma Asst. Prof. ECE Dept. NIEC. Considerations with Optical Sources. Physical dimensions to suit the fiber Narrow radiation pattern (beam width) Linearity (output light power proportional to driving current).

1.32k views • 89 slides

Light-emitting Diodes for general lighting applications

D.L. Pulfrey. Department of Electrical and Computer Engineering University of British Columbia Vancouver, B.C. V6T1Z4, Canada. pulfrey@ece.ubc.ca. http://nano.ece.ubc.ca. Light-emitting Diodes for general lighting applications. Day 2, May 28, 2008, Pisa. Examples of colour lighting.

938 views • 64 slides

Atomic Processes in Spectroscopic modeling and their application to EBIT plasma

Atomic Processes in Spectroscopic modeling and their application to EBIT plasma. Guiyun Liang ??? National Astronomical Observatories, CAS Beijing, China. AtomDB 2014 workshop, Sep.6-9, Tokyo, Japan. Collaborators. UK APAP network. Gang Zhao Jiayong Zhong Feilu Wang Huigang Wei

735 views • 60 slides

606 views • 45 slides

Atomic Physics for X-ray Astronomy: A Primer

Atomic Physics for X-ray Astronomy: A Primer. Randall K. Smith Chandra X-ray Center. Introduction. Some Simplifications:. Atoms only : Molecules (and dust grains) are only observable in absorption X-ray spectra with difficulty. No nuclear transitions : By definition these are ?- rays.

466 views • 32 slides

Outline of lectures: Day 1-2: Research on the physics of nitride semiconductors Fundamentals of semiconductor physics

Outline of lectures: Day 1-2: Research on the physics of nitride semiconductors Fundamentals of semiconductor physics Research on nitrides Day 3-4: Research on the teaching and learning of physics Research in cognitive science Research in physics education.

480 views • 28 slides

Light Emitting Diodes

467 views • 28 slides

OUTLINE

386 views • 23 slides

FAST CODES FOR MODELING THE FUSION PLASMAS RADIATIVE PROPERTIES

RRC Kurchatov Institute, Moscow, Russia. FAST CODES FOR MODELING THE FUSION PLASMAS RADIATIVE PROPERTIES. V.S. Lisitsa IAEA CCN meeting, Vienna, Sept. 27-28, 2010. A survey of current status and applications of fast codes. Why do we need the simplified fast atomic codes?

353 views • 20 slides

Optical Processes in Semiconductors: Review

Optical Processes in Semiconductors: Review. A. Ayd?nl?. PL. Emission of optical radiation resulting from excitation to a nonequilibrium state by irradiation with light. Create electron-hole pairs by absorption of exciting light Radiative recombination of electron-hole pairs

747 views • 19 slides

AtomDB Workshop Harvard-Smithsonian Center for Astrophysics Cambridge, MA 9-10 August 2012

AtomDB Workshop Harvard-Smithsonian Center for Astrophysics Cambridge, MA 9-10 August 2012.

244 views • 15 slides

Optical Sources

Optical Sources. By Asif Siddiq. LED. Electron from the conduction band recombines with a hole in the valance band of a semiconductor to produce a PHOTON Stimulated emission is not encouraged By not adding a cavity and mirrors Operates at lower current densities

319 views • 13 slides

ELECTROLUMINESCENCE

ELECTROLUMINESCENCE. EL TECHNOLOGIE DUNE scientific design centre JET AVIATION meeting March 19. 2009. EL TECHNOLOGIE DUNE scientific design centre.

227 views • 10 slides

231 views • 7 slides

Design considerations for mechanically stacked solar cells in terrestrial Concentrating PV systems

131 views • 1 slides

How does diffusion affect radiative efficiency measurements?

Laser Excitation Area Luminescence Area Absorption Event Recombination Event Electrons Holes. How does diffusion affect radiative efficiency measurements? Caroline Vaughan and Tim Gfroerer, Davidson College, Davidson, NC Mark Wanlass, National Renewable Energy Lab, Golden, CO.

100 views • 1 slides

Imaging and modeling diffusion to isolated defects in a GaAs/GaInP heterostructure

Conduction Band. Ec. Energy. Ev. Valence Band. Imaging and modeling diffusion to isolated defects in a GaAs/GaInP heterostructure Tim Gfroerer, Mac Read, and Caroline Vaughan, Davidson College, Davidson, NC Mark Wanlass, National Renewable Energy Lab, Golden, CO. Motivation.

182 views • 1 slides

Imaging and modeling diffusion to defects in GaAs

Imaging and modeling diffusion to defects in GaAs Mac Read and Tim Gfroerer, Davidson College, Davidson, NC Mark Wanlass, National Renewable Energy Lab, Golden, CO. Abstract. Motivation. Diffusion to Defect Model.

198 views • 1 slides