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Title: Variation of band gap in CdPbS with composition prepared by a precipitation technique
Authors: Kumar, Sanjeev
Bhattacharya, B
Keywords: CdPbS
Precipitation technique
Band gap
Issue Date: Aug-2005
Publisher: CSIR
Series/Report no.: F26B3/28
Abstract: Cadmium sulphide (CdS) is highly sensitive of light and has high absorption coefficient. Only disadvantage with CdS is its wide band gap (2.4eV). The band gap of CdS has been tailored by mixing it with lead sulphide (PbS)(low band gap material). The material of configuration (Cd1-xPbxS) for this study has been prepared by precipitate technique in the methanol with x = 0.2, 0.4, 0.6, 0.8. The films of this material were deposited by the vacuum deposition method. Spectroscopic technique has been used for the band gap determination. The variation of band gap with their composition has been reported. It has been found that the band gap decreases with increase in pb concentration. The nature of the band gap has also been determined in this paper.
Description: 609-611
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.43(08) [August 2005]

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