Citation: XU Na, CHEN Zhe, SUO Zhong-Yuan, TAN Nai-Di. Effect of Intrinsic Defects on Electrical and Optical Properties of CdS Thin Films Deposited by Chemical Bath Deposition[J]. Chinese Journal of Inorganic Chemistry, ;2016, 32(1): 111-116. doi: 10.11862/CJIC.2016.005 shu

Effect of Intrinsic Defects on Electrical and Optical Properties of CdS Thin Films Deposited by Chemical Bath Deposition

XU Na ¹ ,
CHEN Zhe ¹ ,
SUO Zhong-Yuan ² ,
TAN Nai-Di ^3,*,,

1.
College of Materials Science and Engineering, Institute of Chemical and Technology, Jilin, Jilin 132022, China
2.
College of Mechanical and Electrical Engineering, Institute of Chemical and Technology, Jilin, Jilin 132022, China
3.
College of Chemical and Pharmaceutical Engineering, Institute of Chemical and Technology, Jilin, Jilin 132022, China

Corresponding author: TAN Nai-Di, tannaidi@hotmail.com
Received Date: 27 August 2015
Revised Date: 19 October 2015

Figures(6)

CdS thin films were deposited on soda-lime glass (SLG) substrates by chemical bath deposition (CBD). Effects of intrinsic defects on electrical and optical properties of CdS thin films deposited at various concentration of CdSO₄ in solution were systemically investigated. Photoluminescence (PL), UV-Visible spectrophotometer and Hall-effect system were used to study intrinsic defects, optical and electrical properties of CdS thin films. Two intrinsic defects (Cd_i and V_S) were found to be existed in CdS films using photoluminescence (PL), and these defects are donor defects. It is found that the intrinsic defects (V_S) decrease with the reduction of CdSO₄ concentration. The variation of the intrinsic defects results in the shifts of transmittance and conductivity. According to the related equations of transmittance, it is indicated that the transmittance is inversely proportional to conductivity of semiconductor materials. Therefore, the decrease of donor defects (V_S) results in the reduction of conductivity and significant increase of the transmittance of CdS thin films, well supporting our experimental results.
- intrinsic defects,
- CdS thin film,
- chemical bath deposition,
- optical property,
- electrical property
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