Two-photon-induced photoenhancement of densely packed CdSe/ZnSe/ZnS nanocrystal solids and its application to multilayer optical data storage

被引：40
作者：
Chon, JWM
Zijlstra, P
Gu, M
van Embden, J
Mulvaney, P
机构：
[1] Swinburne Univ Technol, Sch Biophys Sci & Elect Engn, Ctr Microphoton, Hawthorn, Vic 3122, Australia
[2] Univ Melbourne, Sch Chem, Parkville, Vic 3010, Australia
来源：
APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 23期
基金：
澳大利亚研究理事会;
关键词：
D O I：
10.1063/1.1829392
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report on a two-photon absorption-induced photoenhancement effect on a densely packed CdSe/ZnSe/ZnS core-shell semiconductor nanocrystal solid film. The enhancement is found to be irreversible without a noticeable blueshift in emission spectra, hence we attribute the enhancement to the photoannealing of interface defects rather than to the photo-oxidation or surface passivation by other molecules. The two-photon enhancement allows us to record the enhanced spots three dimensionally, hence demonstrating the feasibility of its application to multilayered optical data storage based on nanocrystal solids. (C) 2004 American Institute of Physics.
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收藏
页码：5514 / 5516
页数：3
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