Comparative behavior of CdS and CdSe quantum dots in poly(3-hexylthiophene) based nanocomposites

CdS and CdSe nanoparticles have been prepared using conducting poly(3-hexylthiophene) (P3HT) matrix with an objective to understand the effect of nanoparticles on the polymer matrix using electrochemical and spectroscopic techniques. The spectroscopic results reveal that the electronic structure of...

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Published in:Materials research bulletin 2006-01, Vol.41 (1), p.198-208
Main Authors: Sonar, Prashant, Sreenivasan, K.P., Madddanimath, Trupti, Vijayamohanan, K.
Format: Article
Language:English
Subjects:
A. Semiconducting polymers
B. Electrochemical properties
CADMIUM SELENIDES
CADMIUM SULFIDES
COMPOSITE MATERIALS
ELECTROCHEMISTRY
ELECTRONIC STRUCTURE
EXCITED STATES
MATERIALS SCIENCE
MORPHOLOGY
POLYMERS
QUANTUM DOTS
SCANNING ELECTRON MICROSCOPY
VOLTAMETRY
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description CdS and CdSe nanoparticles have been prepared using conducting poly(3-hexylthiophene) (P3HT) matrix with an objective to understand the effect of nanoparticles on the polymer matrix using electrochemical and spectroscopic techniques. The spectroscopic results reveal that the electronic structure of polymer is strongly influenced by the characteristics of embedded semiconducting nanoparticles. SEM and TEM images show the ordered morphology of the CdS and CdSe nanoparticles in presence of the polymer matrix. Cyclic voltammetry performed both in the presence and absence of light enables us to understand the redox changes in P3HT due to CdS and CdSe quantum dots such as the generation of free radical in the excited state and their electrochemical band gaps.
doi_str_mv 10.1016/j.materresbull.2005.07.032
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subjects A. Semiconducting polymers
B. Electrochemical properties
CADMIUM SELENIDES
CADMIUM SULFIDES
COMPOSITE MATERIALS
ELECTROCHEMISTRY
ELECTRONIC STRUCTURE
EXCITED STATES
MATERIALS SCIENCE
MORPHOLOGY
POLYMERS
QUANTUM DOTS
SCANNING ELECTRON MICROSCOPY
VOLTAMETRY
title Comparative behavior of CdS and CdSe quantum dots in poly(3-hexylthiophene) based nanocomposites
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