Determination of the Minimum Island Size for Full Exciton Localization Due to Thickness Fluctuations in Zn1-xCdxSe Quantum Wells

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Abstract:

Atomic layer fluctuations of the thickness of quantum wells QWs are one of the causes of exciton localization. Here we present the results of the determination of the minimum lateral dimensions of islands formed by thickness fluctuations in Zn1-xCdxSe QWs which produce full exciton localization. We have calculated the localization energy of excitons in the frame of the factorized-envelope approximation. We found that the excitons are well localized in the islands of the QW when their dimensions are larger than 15 times the exciton Bohr radius. This result allows us to evaluate the quality of the QW structure and interpret the photoluminescence characteristics of QWs.

Author(s):
Diaz-arencibia, P. ; Hernandez-calderon, I.
Author Organization(s):
CENTRO DE INVESTIGACION Y DE ESTUDIOS AVANZADOS DEL IPN MEXICO CITY (MEXICO)DEP OF PHYSICS
Descriptive Note:
Conference proceedings
Supplementary Note:
This article is from ADA408025 Nanostructures: Physics and Technology International Symposium (9th), St. Petersburg, Russia, June 18-22, 2001 Proceedings
Pagination:
0004

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Availability: Hard Copy Only.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
EN.05P
Monitor Series:
X5
 Subject Terms
Joint Capability Areas:
JCA_6.3.3_Spectrum Management; JCA_6.3_Net Management; JCA_6_Net Centric; JCA_5.3_Planning; JCA_5_Command and Control
Communities of Interest:
Air Platforms
Descriptor(s):
*QUANTUM WELLS, *PHOTOLUMINESCENCE, THICKNESS, EXCITONS, MEXICO, ZINC SELENIDES, CADMIUM SELENIDES
Field(s)/Group(s):
Solid State Physics
Keyword(s):
COMPONENT REPORT, FOREIGN REPORTS, ATOMIC LAYER SPECTROSCOPY, BOHR RADIUS
Report Date:
2001 Jun 01
Creation Date:
2002 Dec 11