Correlation of Interfacial Transportation Properties of CdS/CdTe Heterojunction and Performance of CdTe Polycrystalline Thin-Film Solar Cells
The light and dark output performances of CdS/CdTe solar cells made by close-spaced sublimation (CSS) were investigated to elucidate the transportation properties of carriers at CdS/CdTe heterojunction interface. It has been found that the interfacial transportation properties were relatively sensit...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2015/519386 |
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| author | Guanggen Zeng Jingquan Zhang Wenwu Wang Lianghuan Feng |
| author_facet | Guanggen Zeng Jingquan Zhang Wenwu Wang Lianghuan Feng |
| author_sort | Guanggen Zeng |
| collection | DOAJ |
| description | The light and dark output performances of CdS/CdTe solar cells made by close-spaced sublimation (CSS) were investigated to elucidate the transportation properties of carriers at CdS/CdTe heterojunction interface. It has been found that the interfacial transportation properties were relatively sensitive to variations of the characteristics of heterojunction due to the series resistance and shunting effects. For the high quality cell with 12.1% efficiency, narrow depletion region of ~1.1 microns and large electric field intensity of ~1.3 V/μm allow the sufficient energy-band bending close to CdS layer at CdS/CdTe heterojunction, which changes the carrier transportation mechanism from emission to diffusion and leads to the optimal rectifying characteristics with small dark saturation current density ~6.4 × 10−10 A/cm2. As a result, the schematic diagram of heterojunction band structure corresponding to various performances of solar cells has also been presented. |
| format | Article |
| id | doaj-art-6f1a8c5bc420409a81f4ddd7b959460f |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-6f1a8c5bc420409a81f4ddd7b959460f2025-02-03T05:46:55ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2015-01-01201510.1155/2015/519386519386Correlation of Interfacial Transportation Properties of CdS/CdTe Heterojunction and Performance of CdTe Polycrystalline Thin-Film Solar CellsGuanggen Zeng0Jingquan Zhang1Wenwu Wang2Lianghuan Feng3College of Materials Science and Engineering, Sichuan University, Chengdu 610065, ChinaCollege of Materials Science and Engineering, Sichuan University, Chengdu 610065, ChinaCollege of Materials Science and Engineering, Sichuan University, Chengdu 610065, ChinaCollege of Materials Science and Engineering, Sichuan University, Chengdu 610065, ChinaThe light and dark output performances of CdS/CdTe solar cells made by close-spaced sublimation (CSS) were investigated to elucidate the transportation properties of carriers at CdS/CdTe heterojunction interface. It has been found that the interfacial transportation properties were relatively sensitive to variations of the characteristics of heterojunction due to the series resistance and shunting effects. For the high quality cell with 12.1% efficiency, narrow depletion region of ~1.1 microns and large electric field intensity of ~1.3 V/μm allow the sufficient energy-band bending close to CdS layer at CdS/CdTe heterojunction, which changes the carrier transportation mechanism from emission to diffusion and leads to the optimal rectifying characteristics with small dark saturation current density ~6.4 × 10−10 A/cm2. As a result, the schematic diagram of heterojunction band structure corresponding to various performances of solar cells has also been presented.http://dx.doi.org/10.1155/2015/519386 |
| spellingShingle | Guanggen Zeng Jingquan Zhang Wenwu Wang Lianghuan Feng Correlation of Interfacial Transportation Properties of CdS/CdTe Heterojunction and Performance of CdTe Polycrystalline Thin-Film Solar Cells International Journal of Photoenergy |
| title | Correlation of Interfacial Transportation Properties of CdS/CdTe Heterojunction and Performance of CdTe Polycrystalline Thin-Film Solar Cells |
| title_full | Correlation of Interfacial Transportation Properties of CdS/CdTe Heterojunction and Performance of CdTe Polycrystalline Thin-Film Solar Cells |
| title_fullStr | Correlation of Interfacial Transportation Properties of CdS/CdTe Heterojunction and Performance of CdTe Polycrystalline Thin-Film Solar Cells |
| title_full_unstemmed | Correlation of Interfacial Transportation Properties of CdS/CdTe Heterojunction and Performance of CdTe Polycrystalline Thin-Film Solar Cells |
| title_short | Correlation of Interfacial Transportation Properties of CdS/CdTe Heterojunction and Performance of CdTe Polycrystalline Thin-Film Solar Cells |
| title_sort | correlation of interfacial transportation properties of cds cdte heterojunction and performance of cdte polycrystalline thin film solar cells |
| url | http://dx.doi.org/10.1155/2015/519386 |
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