| 光谱学与光谱分析 |
|
|
|
|
|
| Spectral Analysis of the Effects of 1.7 MeV Electron Irradiation on the Current Transfer Characteristic of Cadmium Telluride Solar Cells |
| TIAN Jin-xiu, ZENG Guang-gen*, HE Xu-lin, ZHANG Jing-quan, WU Li-li, LI Wei, LI Bing, WANG Wen-wu, FENG Liang-huan |
| Material Science and Engineering College of Sichuan University, Chengdu 610065, China |
|
|
|
|
Abstract The effects of device performance of 1.7 MeV electron irradiation on cadmium telluride polycrystalline thin film solar cells with the structure of anti-radiation glass/ITO/ZnO/CdS/CdTe/ZnTe/ZnTe∶Cu/Ni have been studied. Light and dark I-V characteristics, dark C-V characteristics, quantum efficiency (QE), admittance spectrum (AS) and other testing methods were used to analyze cells performance such as the open-circuit voltage (Voc), short-circuit current (Isc), fill factor (FF) and conversion efficiency (η). It was explored to find out the effects of irradiation on the current transfer characteristic of solar cells combined with the dark current density (Jo), diode ideal factor (A), quantum efficiency, carrier concentration and the depletion layer width. The decline in short-circuit current was very large and the efficiency of solar cells decreased obviously after irradiation. Reverse saturation current density increased, which indicates that p-n junction characteristics of solar cells were damaged, and diode ideal factor was almost the same, so current transport mechanism of solar cells has not changed. Quantum efficiency curves proved that the damage of solar cells’ p-n junction influenced the collection of photo-generated carriers. Irradiation made carrier concentration reduce to 40.6%. The analyses have shown that. A new defect was induced by electron irradiation, whose position is close to 0.58 eV above the valence band in the forbidden band, and capture cross section is 1.78×10-16 cm2. These results indicate that irradiation influences the generation of photo-generated carriers, increases the risk of the carrier recombination and the reverse dark current, and eventually makes the short-circuit current of solar cells decay.
|
|
Received: 2013-08-07
Accepted: 2013-11-19
|
|
|
|
Corresponding Authors:
ZENG Guang-gen
E-mail: yigezeng@sina.com.cn
|
|
[1] Chandramohan S, Sathyamoorthy R, Sudhagar P, et al. Thin Solid Films, 2008, 516: 5508.
[2] Aoki T, Gnatyuk DV, Odarych L V, et al. The Solid Film, 2011, 519: 2834.
[3] Singh M, Vijay Y K, Sharma B K. Pramana, 2007, 69(4): 631.
[4] Batzner D L, Romeo A, Dobeli M, et al. 29th IEEE Photovoltaic Specialists Conference, New Orleans, 2002.
[5] Krishnan Heeja, Sanjeev Ganesh, Pattabi Manjunatha, et al. Solar Energy Materials & Solar Cells, 2009, 93: 2.
[6] Lu Maowang, Zhang Guilian, Chen Saiyan. Semiconductor Science and Technology, 2007, 22: 1307.
[7] Xia Peigeng, Zheng Jiagui, Feng Lianghuan, et al. Journal of Sichuan University, 2004, 41: 118.
[8] Li W, Feng Linghuan, Zhang Jingquan, et al. Sci. China Ser E-Tech. Sci., 2008, 51: 33.
[9] Zhang Jingquan. Study on CdTe and Related Compound Polycrystalline Thin Films as Well as CdTe Solar Cell. Sichuan: Sichuan University，2002. 94.
[10] Wu Zhitian. The Application of Varactor Diode. Beijing: National Defence Industry Press, 1989. 36.
[11] Werner B, Kolodenny W, Dziedzic A. Electronics Technology, 2009. 13.
[12] Faraga A A M, Yahiab I S, Fadelb M. International Journal of Hydrogen Energy, 2009, 34: 4906.
[13] Balcioglu A, Ahrenkiel R K, Hasoon F. Journal of Applied Physics, 2000, 88: 7175.
[14] Versluys J, Clauws P, Nollet P, et al. Thin Solid Films, 2003, 148: 431.
[15] Fiederle M, Ebling D, Eiche C, et al. Journal of Crystal Growth, 1994, 138: 529. |
| [1] |
WANG Fang, MA Zong-min*, ZHAO Min, LIN Zhao-dong, ZHANG Shao-wen, QU Zhang, LIU Jun, LI Yan-jun. Spectral Characteristics and Concentration Quantitative Analysis of NV Center Ensembles in Diamond[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(05): 1477-1481. |
| [2] |
ZHANG Li-xiang, FENG Liang-huan, WANG Wen-wu*, XU Hang, WU Li-li, ZHANG Jing-quan, LI Wei, ZENG Guang-gen. The Impact of ZnS/CdS Composite Window Layer on the Quantun Efficiency of CdTe Solar Cell in Short Wavelength[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(02): 320-324. |
| [3] |
YANG Fang1,ZHONG Yong-qiang2,ZHENG Jia-gui1*,FENG Liang-huan1, CAI Wei1,CAI Ya-ping1,ZHANG Jing-quan1,LI Bing1,LEI Zhi1,LI Wei1,WU Li-li1 . Study on Back Contact Layer of CdTe Solar Cell by XPS[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2009, 29(04): 904-907. |
| [4] |
YANG Ding-yu1,2,XIA Geng-pei1*,ZHENG Jia-gui1,FENG Liang-huan1,CAI Ya-ping1. Research on the Polycrystalline CdS Thin Films Prepared by Close-Spaced Sublimation[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2009, 29(01): 56-61. |
| [5] |
SONG Hui-jin1, ZHENG Jia-gui1, FENG Liang-huan1, ZHANG Jing-quan1, LI Wei1, LI Bing1, WU li-li1, LEI Zhi1, YAN Qiang2. Study on the Back Contact Performances of CdTe Solar Cells by XPS[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2008, 28(12): 2737-2740. |
|
|
|
|
