Optical observation of quantum-dot formation in sub-critical CdSe layers grown on ZnSe

C. S. Kim, M. Kim, Sang Hoon Lee, J. K. Furdyna, M. Dobrowolska, H. Rho, L. M. Smith, Howard E. Jackson

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Abstract

The evolution of CdSe quantum dot (QD) formation on ZnSe was investigated on a series of samples grown by MBE, with nominal CdSe coverages ranging from 1.1 to 2.6 monolayers (ML). Micro-PL data suggest strongly confined zero-dimensional excitons even for coverages as low as 1.1 ML. PL and micro-PL data show emission from the QDs as well as from an accompanying 2 D layer; the temperature dependence of these emissions is notably different. Strong red-shifts of both emissions as the CdSe coverage increases are observed.

Original languageEnglish
Pages (from-to)761-764
Number of pages4
JournalJournal of Crystal Growth
Volume214
DOIs
Publication statusPublished - 2000 Jun 2
Externally publishedYes

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ASJC Scopus subject areas

  • Condensed Matter Physics

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