Jpn. J. Appl. Phys. 47 (2008) pp. 2168-2170 |Previous Article| |Next Article| |Table of Contents|
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Communication
Ultrafast Carrier Dynamics in CdSSe Nanocrystals in Glass Matrix
Tadaki Miyoshi,
Karel Neudert1, and
Petr Maly1
Division of Materials Engineering, Graduate School of Science and Engineering, Yamaguchi University, Tokiwadai, Ube, Yamaguchi 755-8611, Japan
1Charles University in Prague, Faculty of Mathematics and Physics, Ke Karlovu 3, 121 16 Prague 2, Czech Republic
(Received November 2, 2007; accepted January 5, 2008; published online April 18, 2008)
We report on photoexcited carrier dynamics in CdSSe nanocrystals in a glass matrix studied by ultrafast photoluminescence spectroscopy. The results of photoluminescence up-conversion measurements are compared with those of transient absorption and degenerate four-wave mixing (DFWM) experiments. The fast component (about 1 ps) of the photoluminescence and transient absorption decay is attributed to hole trapping in a surface state.
URL:
http://jjap.jsap.jp/link?JJAP/47/2168/
DOI: 10.1143/JJAP.47.2168
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