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Raman, Absorption, and Photoluminescence Studies of a CdSxSe1−x Semiconductor Doped Color Glass

Published online by Cambridge University Press:  28 February 2011

S. H. Morgan ,
Z. Pan ,
R. Mu  and
B. H. Long
S. H. Morgan
Affiliation:
Physics Department, Fisk University, Nashville, TN 37208
Z. Pan
Affiliation:
Physics Department, Fisk University, Nashville, TN 37208
R. Mu
Affiliation:
Physics Department, Fisk University, Nashville, TN 37208
B. H. Long
Affiliation:
Physics Department, Columbia State Community College, Columbia, TN 38401
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Abstract

A CdSxSe1−x semiconductor doped sodium zinc borosilicate glass has been made and investigated by Raman, linear absorption, and photoluminescence measurements. The glass color changes from colorless through yellow and orange to red after annealing at 625 C with increasing annealing time. The average size of Cd(S,Se) quantum dots in glass has been determined by low-frequency Raman scattering in the order of several nanometers and increases with annealing time. The resonant Raman spectra from colored glasses show the longitudinal optical phonons of CdSe and CdS-like modes in alloy microcrystals, at 204 cm−1 and 284 cm−1, respectively. The stoichiometric composition of CdSxSe1−x nano-particles, x, determined by Raman scattering, is about 0.3. The photoluminescence spectra of colored glass samples show two emission bands, which are attributed to the electron-hole recombination and emission from trap centers of surface states, respectively.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 358: Symposium F – Microcrystalline and Nanocrystalline Semiconductors , 1994 , 229
Copyright
Copyright © Materials Research Society 1995

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References

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