Time-resolved photoluminescence study of CuInS 2/ZnS nanocrystals
Authors:
- Thi Kim Chi TranTTThi Kim Chi Tran
- Quang Liem NguyenQNQuang Liem Nguyen
- Liang LiLLLiang Li
- Peter ReissPRPeter Reiss
Open Access
- 1 June 2010
- journal article
- Published by IOP Publishing in Advances in Natural Sciences: Nanoscience and Nanotechnology
- Vol. 1 (2)
Abstract
The emission mechanism in ZnS-capped 3-nm CuInS 2 nanocrystals was studied by using time-resolved photoluminescence (TRPL). A typical TRPL spectrum demonstrates two broad emission bands. The spectral shifts as functions of the excitation power density and delay times from the excitation moment prove that both emission bands originate from donor-acceptor pair recombinations. Moreover, the temperature-dependent TRPL measurement revealed the importance of trapping sites in the emission mechanism of CuInS 2 nanocrystals.Keywords
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