T. S. Shamirzaev, A. M. Gilinskii, A. K. Bakarov, A. I. Toropov, D. A. Tenne, K. S. Zhuravlev, C. von Borczyskowski, D. Zahn, “Millisecond photoluminescence kinetics in a system of direct-bandgap InAs quantum dots in an AlAs matrix”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2003, Volume 77, Issue 7,Pages <nobr>459

This article is cited in 29 papers

Millisecond photoluminescence kinetics in a system of direct-bandgap InAs quantum dots in an AlAs matrix

T. S. Shamirzaev^a, A. M. Gilinskii^a, A. K. Bakarov^a, A. I. Toropov^a, D. A. Tenne^a, K. S. Zhuravlev^a, C. von Borczyskowski^b, D. Zahn^b

^a Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences, Novosibirsk
^b Institut für Physik, Technische Universität Chemnitz

Abstract: Anomalously long millisecond kinetics of photoluminescence (PL) is observed at low temperatures (4.2–50 K) in direct-bandgap InAs quantum dots formed in an AlAs matrix. An increase in temperature leads to a decrease in the duration of PL decay down to several nanoseconds at 300 K, whereas the integral PL intensity remains constant up to 210 K. In order to explain the experimental results, a model is proposed that takes into account the singlet-triplet splitting of exciton levels in small quantum dots.

PACS: 78.55.Cr, 78.67.Hc

Received: 04.03.2003