標題: Carrier capture and relaxation of self-assembled ZnTe/ZnSe quantum dots prepared under Volmer-Weber and Stranski-Krastanow growth modes
作者: Lee, ME
Yeh, YC
Chung, YH
Wu, CL
Yang, CS
Chou, WC
Kuo, CT
Jang, DJ
電子物理學系
Department of Electrophysics
關鍵字: type II quantum dots;time-resolved photoluminescence;carrier capture;carrier relaxation;Auger process
公開日期: 1-Feb-2005
摘要: The carrier capture and relaxation of type II ZnTe/ZnSe quantum dots have been investigated with ultrafast time-resolved photo luminescence upconversion. The carrier capture times were 7 and 38 ps for the Volmer-Weber mode and Stranski-Krastanow mode, respectively. We found that the carrier relaxation of QDs exhibits faster decay under the Volmer-Weber growth mode than under the Stranski-Krastanow growth mode. We attribute the difference of carrier relaxation to the wetting layer formed in the Stranski-Krastanow growth mode. (C) 2004 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.physe.2004.08.092
http://hdl.handle.net/11536/23699
ISSN: 1386-9477
DOI: 10.1016/j.physe.2004.08.092
期刊: PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
Volume: 26
Issue: 1-4
起始頁: 422
結束頁: 426
Appears in Collections:Conferences Paper


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