Towards post-NH4Cl treatment on CdSe thin films for solar cell applications

被引：22
作者：
Patel, S. L. [1 ]
Purohit, A. [1 ]
Chander, S. [1 ]
Kannan, M. D. [2 ]
Dhaka, M. S. [1 ]
机构：
[1] Mohanlal Sukhadia Univ, Dept Phys, Udaipur 313001, India
[2] PSG Coll Technol, Dept Phys, Coimbatore 641004, Tamil Nadu, India
来源：
VACUUM | 2018年 / 153卷
关键词：
Thin films; Physical vapor deposition; NH4Cl treatment; Physical properties; Absorber layer; CDCL2; TREATMENT; OPTICAL-PROPERTIES; CHEMICAL-SYNTHESIS;
D O I：
10.1016/j.vacuum.2018.03.038
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An enhancement in grain size of absorber-layer and passivation of grain boundaries to Cd-based solar cells can be achieved by post-chlorine treatments. So, this communication describes the effect of post-NH4Cl treatment on CdSe thin films and based-physical properties have been optimized. The films were deposited by electron-beam evaporation followed by chlorine-treatment using NH4Cl and then annealed in air-atmosphere at different temperature. The microstructural, electrical and optical properties along with elemental-composition are investigated employing concerned characterization tools. The films found to be crystallized in cubic-phase with (111) predominant reflection and phase-transiormation observed at 470 degrees C. The optical band-gap is decreased with NH4Cl heat-treatment while maximum grain-growth observed for higher annealing. The film deposition is confirmed by EDAX spectra and current-voltage relation found to be linear. The experimental results demonstrated that post-NH4Cl treated CdSe thin films annealed at higher temperature might be used as an absorber-layer to thin film solar cells. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：43 / 47
页数：5
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