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Optical Properties of Colloidal CdSe/ZnS core/shell Nanocrystals Embedded in a UV Curable Resin

Published online by Cambridge University Press:  01 February 2011

Abhishek Joshi ,
Edwin Davis ,
Kaushik Narsingi ,
Omar Manasreh  and
B. D. Weaver
Abhishek Joshi
Affiliation:
[email protected], University of Arkansas, Department of Electrical Engineering, 3217 Bell Engineering Center, Fayetteville, AR 72701, United States
Edwin Davis
Affiliation:
[email protected], Norfolk State University, Department of Optical Engineering, 700 Par Ave., Norfolk, VA, 23504, United States
Kaushik Narsingi
Affiliation:
[email protected], University of Arkansas, Department of Electrical Engineering, 3217 Bell Engineering Center, Fayetteville, AR, 72701, United States
Omar Manasreh
Affiliation:
[email protected], University of Arkansas, Department of Electrical Engineering, 3217 Bell Engineering Center, Fayetteville, AR, 72701, United States
B. D. Weaver
Affiliation:
[email protected], Code 6818, Naval Research Laboratory, 4555 Overlook Avenue, SW Washington, DC, 20375, United States
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Abstract

Optical absorption and photoluminescence techniques were used to investigate the band gap of colloidal CdSe/ZnS core/shell nanocrystals matrixed in a UV curable resin. The band gap was measured for several nanocrystals with size ranging between 1.9 and 4.0 nm. The band gap (Eg) was determined from the first exciton peaks observed in the optical absorption spectra. Both Debye and Einstein temperatures were estimated from fitting the energy band gap vs. temperature using two different empirical expressions.

Keywords

core/shellpolymernanostructure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 959: Symposium M – Quantum Dots—Growth, Behavior and Applications , 2006 , 0959-M06-04
Copyright
Copyright © Materials Research Society 2007

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