✦ LIBER ✦

A Study of Photoluminescence and Raman Scattering in CuGaS2:Cd

✍ Scribed by S.H. Eom; S.C. Kim; H.S. Ahn; Y.S. Yu

Publisher: John Wiley and Sons
Year: 2001
Tongue: English
Weight: 163 KB
Volume: 223
Category: Article
ISSN: 0370-1972
DOI: 10.1002/1521-3951(200101)223:1<319::aid-pssb319>3.0.co;2-r

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✦ Synopsis

We present the Raman and photoluminescence (PL) spectra of CuGaS 2 : Cd grown by iodine transport method. The PL spectra of CuGaS 2 showed both band gap and deep center emission, while for CuGaS 2 : Cd the deep center emission was suppressed completely and a new strong emission at 2.31 eV with an activation energy of 97 meV appeared. The pressure dependence of the Raman spectra in CuGaS 2 : Cd has been measured up to about 8 GPa at room temperature. At above 1.76 GPa, the G 1 mode splits into two with frequencies of 313 and 315 cm --1 (G 0 1 ) in which the mode Gru ¨neisen parameters are 1.50 and 1.47, respectively. The additional peak is considered by the localized phonon resulting from the cation Cd.

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