PHOTOACOUSTIC INVESTIGATION OF ABSORPTION-EDGE OF CD1-XMGXSE MIXED-CRYSTALS

Authors
FIRSZT F LEGOWSKI S MECZYNSKA H SEKULSKA B SZATKOWSKI J ZAKRZEWSKI J PASZKOWICZ W
Citation
F. Firszt et al., PHOTOACOUSTIC INVESTIGATION OF ABSORPTION-EDGE OF CD1-XMGXSE MIXED-CRYSTALS, Acta Physica Polonica. A, 92(4), 1997, pp. 749-752
Citations number
5
Categorie Soggetti
Physics
Journal title
Acta Physica Polonica. A → ACNP
ISSN journal
05874246
Volume
92
Issue
4
Year of publication
1997
Pages
749 - 752
Database
ISI
SICI code
0587-4246(1997)92:4<749:PIOAOC>2.0.ZU;2-A
Abstract
The Cd1-xMgxSe crystals were grown by modified Bridgman method for x r anging from 0 to 0.44. The photoacoustic spectroscopy was employed for evaluation of the band gaps of series Cd1-xMgxSe mixed crystals with different composition. The photoacoustic spectra were measured at 300 K and 90 K using continuous wave excitation in the range from 400 nm t o 800 nm. The increase in the band-gap energy with increasing Mg conte nt is observed. The photoacoustic results are compared with photolumin escence and transmission spectra.