Interface Study of ITO/ZnO and ITO/SnO2 Complex Transparent Conductive Layers and Their Effect on CdTe Solar Cells
Transparent ITO/ZnO and ITO/SnO2 complex conductive layers were prepared by DC- and RF-magnetron sputtering. Their structure and optical and electronic performances were studied by XRD, UV/Vis Spectroscopy, and four-probe technology. The interface characteristic and band offset of the ITO/ZnO, ITO/S...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2013/765938 |
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| author | Tingliang Liu Xing Zhang Jingquan Zhang Wenwu Wang Lianghuan Feng Lili Wu Wei Li Guanggen Zeng Bing Li |
| author_facet | Tingliang Liu Xing Zhang Jingquan Zhang Wenwu Wang Lianghuan Feng Lili Wu Wei Li Guanggen Zeng Bing Li |
| author_sort | Tingliang Liu |
| collection | DOAJ |
| description | Transparent ITO/ZnO and ITO/SnO2 complex conductive layers were prepared by DC- and RF-magnetron sputtering. Their structure and optical and electronic performances were studied by XRD, UV/Vis Spectroscopy, and four-probe technology. The interface characteristic and band offset of the ITO/ZnO, ITO/SnO2, and ITO/CdS were investigated by Ultraviolet Photoelectron Spectroscopy (UPS) and X-ray Photoelectron Spectroscopy (XPS), and the energy band diagrams have also been determined. The results show that ITO/ZnO and ITO/SnO2 films have good optical and electrical properties. The energy barrier those at the interface of ITO/ZnO and ITO/SnO2 layers are almost 0.4 and 0.44 eV, which are lower than in ITO/CdS heterojunctions (0.9 eV), which is beneficial for the transfer and collection of electrons in CdTe solar cells and reduces the minority carrier recombination at the interface, compared to CdS/ITO. The effects of their use in CdTe solar cells were studied by AMPS-1D software simulation using experiment values obtained from ZnO, ITO, and SnO2. From the simulation, we confirmed the increase of Eff, FF, Voc, and Isc by the introduction of ITO/ZnO and ITO/SnO2 layers in CdTe solar cells. |
| format | Article |
| id | doaj-art-683cdc72016745f9899825556f15d080 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-683cdc72016745f9899825556f15d0802025-02-03T05:50:21ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2013-01-01201310.1155/2013/765938765938Interface Study of ITO/ZnO and ITO/SnO2 Complex Transparent Conductive Layers and Their Effect on CdTe Solar CellsTingliang Liu0Xing Zhang1Jingquan Zhang2Wenwu Wang3Lianghuan Feng4Lili Wu5Wei Li6Guanggen Zeng7Bing Li8College of Materials Science and Engineering, Sichuan University, Chengdu 610064, ChinaCollege of Materials Science and Engineering, Sichuan University, Chengdu 610064, ChinaCollege of Materials Science and Engineering, Sichuan University, Chengdu 610064, ChinaCollege of Materials Science and Engineering, Sichuan University, Chengdu 610064, ChinaCollege of Materials Science and Engineering, Sichuan University, Chengdu 610064, ChinaCollege of Materials Science and Engineering, Sichuan University, Chengdu 610064, ChinaCollege of Materials Science and Engineering, Sichuan University, Chengdu 610064, ChinaCollege of Materials Science and Engineering, Sichuan University, Chengdu 610064, ChinaCollege of Materials Science and Engineering, Sichuan University, Chengdu 610064, ChinaTransparent ITO/ZnO and ITO/SnO2 complex conductive layers were prepared by DC- and RF-magnetron sputtering. Their structure and optical and electronic performances were studied by XRD, UV/Vis Spectroscopy, and four-probe technology. The interface characteristic and band offset of the ITO/ZnO, ITO/SnO2, and ITO/CdS were investigated by Ultraviolet Photoelectron Spectroscopy (UPS) and X-ray Photoelectron Spectroscopy (XPS), and the energy band diagrams have also been determined. The results show that ITO/ZnO and ITO/SnO2 films have good optical and electrical properties. The energy barrier those at the interface of ITO/ZnO and ITO/SnO2 layers are almost 0.4 and 0.44 eV, which are lower than in ITO/CdS heterojunctions (0.9 eV), which is beneficial for the transfer and collection of electrons in CdTe solar cells and reduces the minority carrier recombination at the interface, compared to CdS/ITO. The effects of their use in CdTe solar cells were studied by AMPS-1D software simulation using experiment values obtained from ZnO, ITO, and SnO2. From the simulation, we confirmed the increase of Eff, FF, Voc, and Isc by the introduction of ITO/ZnO and ITO/SnO2 layers in CdTe solar cells.http://dx.doi.org/10.1155/2013/765938 |
| spellingShingle | Tingliang Liu Xing Zhang Jingquan Zhang Wenwu Wang Lianghuan Feng Lili Wu Wei Li Guanggen Zeng Bing Li Interface Study of ITO/ZnO and ITO/SnO2 Complex Transparent Conductive Layers and Their Effect on CdTe Solar Cells International Journal of Photoenergy |
| title | Interface Study of ITO/ZnO and ITO/SnO2 Complex Transparent Conductive Layers and Their Effect on CdTe Solar Cells |
| title_full | Interface Study of ITO/ZnO and ITO/SnO2 Complex Transparent Conductive Layers and Their Effect on CdTe Solar Cells |
| title_fullStr | Interface Study of ITO/ZnO and ITO/SnO2 Complex Transparent Conductive Layers and Their Effect on CdTe Solar Cells |
| title_full_unstemmed | Interface Study of ITO/ZnO and ITO/SnO2 Complex Transparent Conductive Layers and Their Effect on CdTe Solar Cells |
| title_short | Interface Study of ITO/ZnO and ITO/SnO2 Complex Transparent Conductive Layers and Their Effect on CdTe Solar Cells |
| title_sort | interface study of ito zno and ito sno2 complex transparent conductive layers and their effect on cdte solar cells |
| url | http://dx.doi.org/10.1155/2013/765938 |
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