We investigated the photoluminescence (PL) properties of -doped CdS quantum dots (QDs) prepared by a reverse-micelle method. A PL band which originates from the intracation transition, the so-called transition, of tetrahedrally coordinated ions, is clearly observed at , indicating that ions are thoroughly doped inside CdS QDs. By surface modification with a layer, the intensity of the -related PL band is increased approximately ten times compared with that without modification, and strong enhancement of the band-edge PL band is observed. The decay profile of the band-edge PL in surface-modified QDs is much faster than that in undoped CdS QDs; this shortened decay time originates from the effective energy transfer process from the excitons of host QDs to ions. The PL decay profiles are quantitatively explained on the basis of a three-level model including both the dark-exciton state and the energy transfer process.
Skip Nav Destination
Article navigation
1 November 2006
Research Article|
November 09 2006
Photoluminescence properties and energy transfer processes from excitons to ions in -doped CdS quantum dots prepared by a reverse-micelle method
D. Kim;
D. Kim
a)
Department of Applied Physics, Graduate School of Engineering,
Osaka City University
, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
Search for other works by this author on:
M. Miyamoto;
M. Miyamoto
Department of Applied Physics, Graduate School of Engineering,
Osaka City University
, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
Search for other works by this author on:
M. Nakayama
M. Nakayama
Department of Applied Physics, Graduate School of Engineering,
Osaka City University
, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
Search for other works by this author on:
a)
Electronic mail: [email protected]
J. Appl. Phys. 100, 094313 (2006)
Article history
Received:
May 17 2006
Accepted:
August 07 2006
Citation
D. Kim, M. Miyamoto, M. Nakayama; Photoluminescence properties and energy transfer processes from excitons to ions in -doped CdS quantum dots prepared by a reverse-micelle method. J. Appl. Phys. 1 November 2006; 100 (9): 094313. https://doi.org/10.1063/1.2363238
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
A step-by-step guide to perform x-ray photoelectron spectroscopy
Grzegorz Greczynski, Lars Hultman
Piezoelectric thin films and their applications in MEMS: A review
Jinpeng Liu, Hua Tan, et al.
Tutorial: Simulating modern magnetic material systems in mumax3
Jonas J. Joos, Pedram Bassirian, et al.