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Proceedings Paper

Optical investigation of microcrystals in glasses
Author(s): Michele Ferrara; P. M. Lugara; C. Moro; Roberto Cingolani; C. De Blasi; Daniela Manno; Giancarlo C. Righini
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Paper Abstract

CdS(x)Se(1-x) semiconductor-doped glasses are studied by means of optical techniques such as absorption, emission, and Raman spectroscopy in order to demonstrate the low dimensionality and quantization effects associated with the presence of CdS(x)Se(1-x) microcrystallites in the glass matrix. By applying simple models to our experimental results, it is possible from either absorption and luminescence or Raman spectra to calculate the effective dimension of microcrystals; these values very well agree with transmission electronic microscopy data. Moreover, by using a pump and probe technique, the authors have studied the absorption changes in CdS(x)Se(1-x) microcrystallites, resulting in the shift of the absorption edge and in the bleaching of the excitonic resonance when the pump intensity is increased.

Paper Details

Date Published: 1 August 1991
PDF: 7 pages
Proc. SPIE 1513, Glasses for Optoelectronics II, (1 August 1991); doi: 10.1117/12.46016
Show Author Affiliations
Michele Ferrara, Univ. di Bari (Italy)
P. M. Lugara, Univ. di Bari (Italy)
C. Moro, Univ. di Bari (Italy)
Roberto Cingolani, Univ. di Lecce (Italy)
C. De Blasi, Univ. di Lecce (Italy)
Daniela Manno, Univ. di Lecce (Italy)
Giancarlo C. Righini, IROE/CNR (Italy)

Published in SPIE Proceedings Vol. 1513:
Glasses for Optoelectronics II
Giancarlo C. Righini, Editor(s)

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