Accession Number:

ADP013292

Title:

Localized Excitons in Random and Partly Phase Separated Solid Solutions: Evidence of Fractal Structure of Islands

Descriptive Note:

Conference proceedings

Corporate Author:

RUSSIAN ACADEMY OF SCIENCES SAINT PETERSBURG IOFFE PHYSICAL-TECHNICAL INST

Report Date:

2001-06-01

Pagination or Media Count:

4.0

Abstract:

Temperature dependence of photoluminescence PL spectra of MBE grown ZnSeCdSeZnSe QWs with 0.3-1.5 ML nominal CdSe thicknesses as well as MOCVD grown double heterostructures DHS GaNInGaNGaN with In content in the range 0.004-0.06 within the temperature interval 2-300 K has been studied. Much in common has been found in the PL band temperature behavior for both systems. Depending on the concentration of the solid solution the PL band maximum position epsilon photoluminescencemax T follows either normal or anomalous known as S-shape dependence. We consider both dependances in detail and argue that anomalous behavior is caused by the fractal-like structure of the islands.

Subject Categories:

  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE