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

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posted on 2024-07-09, 23:38 authored by James ChonJames Chon, Peter Zijlstra, Min Gu, Joel Van Embden, Paul Mulvaney
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. © 2004 American Institute of Physics.

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ISSN

0003-6951

Journal title

Applied Physics Letters

Volume

85

Issue

23

Pagination

2 pp

Publisher

AIP Publishing

Copyright statement

Copyright © 2004 American Institute of Physics. is reproduced in accordance with the copyright policy of the publisher.

Language

eng

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