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Type: Artigo de periódico
Title: Temperature dependence of the absorption spectra in CdTe-doped glasses
Author: Redigolo, ML
Arellano, WA
Barbosa, LC
Cruz, CHB
Cesar, CL
de Paula, AM
Abstract: We present absorption spectra as a function of temperature for CdTe quantum dots in doped glasses. We calculate the absorption spectra considering the transition energies from a spherical k.p model. We consider also the inhomogeneous broadening due to the quantum-dot size distribution and the homogeneous broadening, due mainly to electron-phonon interactions. The samples grown with a two-step heat treatment present very thin size distributions, with a standard deviation of 5.8%, which is comparable to the best CdSe samples in the literature. Also, the results show that the homogeneous width increases as the quantum-dot size decreases, indicating an enhancement of the electron-phonon interaction for small dots.
Country: Inglaterra
Editor: Iop Publishing Ltd
Citation: Semiconductor Science And Technology. Iop Publishing Ltd, v. 14, n. 1, n. 58, n. 63, 1999.
Rights: fechado
Identifier DOI: 10.1088/0268-1242/14/1/007
Date Issue: 1999
Appears in Collections:Unicamp - Artigos e Outros Documentos

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