TIME-RESOLVED SPECTROSCOPY OF INAS QUANTUM DOTS USING ONE-SIDE MODULATION-DOPING TECHNIQUE - RENORMALIZATION AND SCREENING

Authors
LEE JI LEE HG SHIN EJ YU SY VISWANATH K KIM D IHM G
Citation
Ji. Lee et al., TIME-RESOLVED SPECTROSCOPY OF INAS QUANTUM DOTS USING ONE-SIDE MODULATION-DOPING TECHNIQUE - RENORMALIZATION AND SCREENING, Materials science & engineering. B, Solid-state materials for advanced technology, 51(1-3), 1998, pp. 122-126
Citations number
14
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Materials science & engineering. B, Solid-state materials for advanced technology → ACNP
ISSN journal
09215107
Volume
51
Issue
1-3
Year of publication
1998
Pages
122 - 126
Database
ISI
SICI code
0921-5107(1998)51:1-3<122:TSOIQD>2.0.ZU;2-0
Abstract
We present the optical properties of modulation-doped InAs/GaAs quantu m dots (QDs). Bandgap renormalization is clearly observed from a red s hift of the emission peaks on the QDs with various modulation-doping c oncentrations, demonstrating that exchange interactions of electrons w ithin single states have no effect on renormalization. Screening due t o the electrons at modulation-doped layer as well as the photo-generat ed carriers in GaAs matrix plays an important role in reducing the rad iative recombination rate. (C) 1998 Elsevier Science S.A. All rights r eserved.