Title :
Evidence of Periodic Electric Fields Generated by Spatial Separation of Photogenerated Electron-Hole Pairs in Short-Period InAs/GaSb Type-II Superlattices
Author :
Mu, Xiaodong ; Ding, Yujie J. ; Svensson, Stefan P. ; Little, John ; Swaminathan, V.
Author_Institution :
Lehigh Univ., Bethlehem
Abstract :
Under relatively high pump intensities, photoluminescence intensities across the miniband were greatly reduced, which was attributed to the existence of periodic electric fields caused by spatially-separated photogenerated electrons and holes in short-period type-II InAs/GaSb superlattices.
Keywords :
III-V semiconductors; gallium compounds; indium compounds; photoluminescence; semiconductor superlattices; InAs-GaSb; periodic electric fields; photogenerated electron-hole pairs; photoluminescence; short-period superlattices; spatial separation; type-II superlattices; Buffer layers; Charge carrier processes; Conducting materials; Electrons; Photoluminescence; Pump lasers; Semiconductor superlattices; Sensor phenomena and characterization; Substrates; Temperature;
Conference_Titel :
Lasers and Electro-Optics, 2007. CLEO 2007. Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-55752-834-6
DOI :
10.1109/CLEO.2007.4453428
