Performance Improvements of Selective Emitters by Laser Openings on Large-Area Multicrystalline Si Solar Cells
This study focuses on the laser opening technique used to form a selective emitter (SE) structure on multicrystalline silicon (mc-Si). This technique can be used in the large-area (156 × 156 mm2) solar cells. SE process of this investigation was performed using 3 samples SE1–SE3. Laser fluences can...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2014/291904 |
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| author | Sheng-Shih Wang Jyh-Jier Ho Jia-Jhe Liou Jia-Show Ho Wei-Chih Hsu Wen-Haw Lu Song-Yeu Tsai Hsien-Seng Hung Kang L. Wang |
| author_facet | Sheng-Shih Wang Jyh-Jier Ho Jia-Jhe Liou Jia-Show Ho Wei-Chih Hsu Wen-Haw Lu Song-Yeu Tsai Hsien-Seng Hung Kang L. Wang |
| author_sort | Sheng-Shih Wang |
| collection | DOAJ |
| description | This study focuses on the laser opening technique used to form a selective emitter (SE) structure on multicrystalline silicon (mc-Si). This technique can be used in the large-area (156 × 156 mm2) solar cells. SE process of this investigation was performed using 3 samples SE1–SE3. Laser fluences can vary in range of 2–5 J/cm2. The optimal conversion efficiency of 15.95% is obtained with the SE3 (2 J/cm2 fluence) after laser opening with optimization of heavy and light dopant, which yields a gain of 0.48%abs
compared with that of a reference cell (without fluence). In addition, this optimal SE3 cell displays improved characteristics compared with other cells with a higher average value of external quantum efficiency (EQEavg = 68.6%) and a lower average value of power loss (Ploss = 2.33 mW/cm2). For the fabrication of solar cells, the laser opening process comprises fewer steps than traditional photolithography does. Furthermore, the laser opening process decreases consumption of chemical materials; therefore, the laser opening process decreases both time and cost. Therefore, SE process is simple, cheap, and suitable for commercialization. Moreover, the prominent features of the process render it effective means to promote overall performance in the photovoltaic industry. |
| format | Article |
| id | doaj-art-0f33778c4f21483297580b6ad7e05099 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-0f33778c4f21483297580b6ad7e050992025-02-03T06:04:57ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2014-01-01201410.1155/2014/291904291904Performance Improvements of Selective Emitters by Laser Openings on Large-Area Multicrystalline Si Solar CellsSheng-Shih Wang0Jyh-Jier Ho1Jia-Jhe Liou2Jia-Show Ho3Wei-Chih Hsu4Wen-Haw Lu5Song-Yeu Tsai6Hsien-Seng Hung7Kang L. Wang8Department of Electrical Engineering, National Taiwan Ocean University, No. 2 Peining Road, Keelung 20224, TaiwanDepartment of Electrical Engineering, National Taiwan Ocean University, No. 2 Peining Road, Keelung 20224, TaiwanDepartment of Electrical Engineering, National Taiwan Ocean University, No. 2 Peining Road, Keelung 20224, TaiwanDepartment of Electrical Engineering, University of California, Los Angeles, CA 90095, USALaboratory of Green Energy & Environment Research, Industrial Technology Research Institute, No. 195 Chung-Hsing Road, Section 4, Chutung, Hsinchu 31061, TaiwanLaboratory of Green Energy & Environment Research, Industrial Technology Research Institute, No. 195 Chung-Hsing Road, Section 4, Chutung, Hsinchu 31061, TaiwanLaboratory of Green Energy & Environment Research, Industrial Technology Research Institute, No. 195 Chung-Hsing Road, Section 4, Chutung, Hsinchu 31061, TaiwanDepartment of Electrical Engineering, National Taiwan Ocean University, No. 2 Peining Road, Keelung 20224, TaiwanDepartment of Electrical Engineering, University of California, Los Angeles, CA 90095, USAThis study focuses on the laser opening technique used to form a selective emitter (SE) structure on multicrystalline silicon (mc-Si). This technique can be used in the large-area (156 × 156 mm2) solar cells. SE process of this investigation was performed using 3 samples SE1–SE3. Laser fluences can vary in range of 2–5 J/cm2. The optimal conversion efficiency of 15.95% is obtained with the SE3 (2 J/cm2 fluence) after laser opening with optimization of heavy and light dopant, which yields a gain of 0.48%abs compared with that of a reference cell (without fluence). In addition, this optimal SE3 cell displays improved characteristics compared with other cells with a higher average value of external quantum efficiency (EQEavg = 68.6%) and a lower average value of power loss (Ploss = 2.33 mW/cm2). For the fabrication of solar cells, the laser opening process comprises fewer steps than traditional photolithography does. Furthermore, the laser opening process decreases consumption of chemical materials; therefore, the laser opening process decreases both time and cost. Therefore, SE process is simple, cheap, and suitable for commercialization. Moreover, the prominent features of the process render it effective means to promote overall performance in the photovoltaic industry.http://dx.doi.org/10.1155/2014/291904 |
| spellingShingle | Sheng-Shih Wang Jyh-Jier Ho Jia-Jhe Liou Jia-Show Ho Wei-Chih Hsu Wen-Haw Lu Song-Yeu Tsai Hsien-Seng Hung Kang L. Wang Performance Improvements of Selective Emitters by Laser Openings on Large-Area Multicrystalline Si Solar Cells International Journal of Photoenergy |
| title | Performance Improvements of Selective Emitters by Laser Openings on Large-Area Multicrystalline Si Solar Cells |
| title_full | Performance Improvements of Selective Emitters by Laser Openings on Large-Area Multicrystalline Si Solar Cells |
| title_fullStr | Performance Improvements of Selective Emitters by Laser Openings on Large-Area Multicrystalline Si Solar Cells |
| title_full_unstemmed | Performance Improvements of Selective Emitters by Laser Openings on Large-Area Multicrystalline Si Solar Cells |
| title_short | Performance Improvements of Selective Emitters by Laser Openings on Large-Area Multicrystalline Si Solar Cells |
| title_sort | performance improvements of selective emitters by laser openings on large area multicrystalline si solar cells |
| url | http://dx.doi.org/10.1155/2014/291904 |
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