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Synthesis of Colloidal InP/ZnS Nanocrystals for a Photosensitizer

Published online by Cambridge University Press:  18 April 2012

Seungyong Lee ,
Vanga R. Reddy ,
Jiang Wu ,
Rick Eyi  and
Omar Manasreh
Seungyong Lee
Affiliation:
Department of Electrical Engineering, University of Arkansas, Fayetteville, AR 72701, U.S.A.
Vanga R. Reddy
Affiliation:
Department of Electrical Engineering, University of Arkansas, Fayetteville, AR 72701, U.S.A.
Jiang Wu
Affiliation:
Department of Electrical Engineering, University of Arkansas, Fayetteville, AR 72701, U.S.A.
Rick Eyi
Affiliation:
Department of Electrical Engineering, University of Arkansas, Fayetteville, AR 72701, U.S.A.
Omar Manasreh
Affiliation:
Department of Electrical Engineering, University of Arkansas, Fayetteville, AR 72701, U.S.A.
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Abstract

Its intrinsic nontoxicity makes the direct band gap InP/ZnS core/shell be one of the most promising semiconductor nanocrystals for optoelectric applications, with the advantage of tuning the optical absorption range in the desired solar spectrum region. Highly luminescent and monodisperse InP/ZnS nanocrystals were synthesized in a non-coordinating solvent under a thorough degassing process. By varying synthesis scheme, different size InP/ZnS nanocrystals were grown. For the purpose of ensuring air stability, ZnS shell was grown. This ZnS shell improves the chemical stability in terms of oxidation prevention. Measurements of absorption and emission were performed on different InP/ZnS nanocrystals with different sizes. As expected, the measurements show a red-shift as the size of the InP/ZnS nanocrystals increased.

Keywords

nanostructureoptical propertieschemical synthesis
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1409: Symposium CC – Functional Semiconductor Nanocrystals and Metal-Hybrid Structures , 2012 , mrsf11-1409-cc05-17
Copyright
Copyright © Materials Research Society 2012

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References

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