Optical Characterization of Sputter Deposited CdS Thin Films and Measurement of Deposition Rate

被引:0
作者
Ahamed, E. M. K. Ikball [1 ]
Das, N. K. [1 ]
Farhad, S. F. U. [2 ]
Khan, M. N., I [3 ,4 ]
Matin, M. A. [1 ]
Amin, N. [3 ,4 ]
机构
[1] Chittagong Univ Engn & Technol, Dept Elect & Elect Engn, Chattogram 4349, Bangladesh
[2] Bangladesh Council Sci & Ind Res BCSIR, Ind Phys Div, Dhaka 1205, Bangladesh
[3] Atom Energy Ctr AEC, Mat Sci Div, Dhaka, Bangladesh
[4] Univ Tenaga Nas, Energy Univ, Inst Sustainable Energy, Jalan IKRAM UNITEN, Kajang 43000, Selangor, Malaysia
来源
2020 IEEE REGION 10 SYMPOSIUM (TENSYMP) - TECHNOLOGY FOR IMPACTFUL SUSTAINABLE DEVELOPMENT | 2020年
关键词
CdS thin-film; RF sputtering; UV-Vis NIR spectroscopy; Optical properties; deposition rate;
D O I
10.1109/tensymp50017.2020.9230706
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Thin film Cadmium Sulfide (CdS) is a common n-type heteropartner for thin film Cadmium Telluride, Copper Indium Gallium Selenium and Copper Tin Zinc Sulfide based solar cells. This work reports the optical properties of CdS thin films which were synthesized onto soda-lime glass substrate by RF magnetron sputtering technique for different RF power. Analyzing the interference fringe pattern of the transmittance spectra and using the methodological framework of Swanepoel method, the film thickness as well as the deposition rate versus RF power characteristics has been deduced. The estimated thickness of the deposited CdS films were compared with the measured thickness by Dektak profilometer and found satisfactory. The deposition rate versus RF power characteristics offers an optimized recipe for fabricating CdS thin films of controlled thickness. In addition, optical energy bandgap, absorption coefficient and wavelength dependent complex refractive index have been calculated. The calculated bandgap energy values of the as-grown CdS films are around 2.42 eV to 2.44 eV and the complex refractive index lies the range of 2.35 to 2.50. Using this data researchers will be able to deposit CdS films of controlled thickness according to the needs.
引用
收藏
页码:1010 / 1013
页数:4
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