<link rel="stylesheet" href="styles.cf390c6bfbe7555f.css">

Browsing by Author "Lee, ME"

Now showing 1 - 1 of 1
  • Thumbnail Image
    Item type:Item,
    Carrier capture and relaxation of self-assembled ZnTe/ZnSe quantum dots prepared under Volmer-Weber and Stranski-Krastanow growth modes
    (2005-02-01)
    Lee, ME
    ;
    Yeh, YC
    ;
    Chung, YH
    ;
    Wu, CL
    ;
    Yang, CS
    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.