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Title

Enhanced photorefractive performance in CdSe quantum-dot-dispersed poly(styrene-co-acrylonitrile) polymers

Author(s)

Li, Xiangping;  van Embden, Joel;  Chon, James W. M.;  Evans, Richard A.;  Gu, Min

Abstract

This paper reports on the enhanced photorefractive behavior of a CdSe quantum-dot-dispersed less expensive polymer of poly(styrene-co-acrylonitrile). The capability of CdSe quantum dots used as photosensitizers and the associated photorefractive performance are characterized through a photocurrent experiment and a two-beam coupling experiment, respectively. An enhanced two-beam coupling gain coefficient of 12.2 cm−1 at 46 V/μm was observed owning to the reduced potential barrier. The photorefractive performance per CdSe quantum dot is three orders of magnitude higher than that in the sample sensitized by trinitrofluorenone in poly(styrene-co-acrylonitrile), and almost ten times higher than that in the CdSe quantum-dot-sensitized poly(N-vinylcarbazole) polymers.

Publication type

Journal article

Research centre

Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Micro-Photonics

Source

Applied Physics Letters, Vol. 96, no. 25 (Jun 2010), paper no. 253302

Publication year

2010

FOR Code(s)

01 Mathematical Sciences;  02 Physical Sciences;  09 Engineering

Keyword(s)

CdSe quantum dots;  Photorefractive behavior;  Polymers;  Poly(styrene-co-acrylonitrile)

Publisher

American Institute of Physics

ISSN

0003-6951

Publisher URL

http://dx.doi.org/10.1063/1.3454780

Copyright

Copyright © 2010 American Institute of Physics. Published version of this paper reproduced here in accordance with the copyright policy of the publisher.

Research Projects

Multi-dimensional optical data storage based on nanophotonics: the third generation optical data storage technology, Australian Research Council grant number DP0558759

Full text

Peer reviewed