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- Title
Study of structural, optical and electrical parameters of ZnSe powder and thin films.
- Authors
Shikha, Deep; Mehta, Vimal; Sharma, Jeewan; Chauhan, R.
- Abstract
Nanocrystalline ZnSe powder and thin film forms have been synthesized via chemical bath deposition technique. The ZnSe thin films are deposited onto ultrasonically clean glass substrates in an aqueous alkaline medium using sodium selenosulphate as Se ion source. The ZnSe powder and thin film are characterized by structural, optical and electrical properties. It is confirmed from X-ray diffraction study that cubic phase is present in ZnSe thin film form with (111) as preferred orientation and hexagonal phase is present in ZnSe powder form with (100) as preferred orientation. Optical absorption measurement indicates the existence of direct allowed optical transition with a wide energy gap and blue shift in the fundamental edge has been observed in both cases. The optical band gap of ZnSe powder is greater than the thin film. The electrical conductivity (both dark and photoconductivity) measurements are also carried out in different temperature range and variation in activation energy has been calculated.
- Subjects
NANOCRYSTALS; THIN films; SELENIUM; ZINC; X-ray diffraction
- Publication
Journal of Materials Science: Materials in Electronics, 2017, Vol 28, Issue 12, p8359
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-017-6552-z