Charge-Carrier Transport in Thin Film Solar Cells: New Formulation
Solar cells rely on photogeneration of charge carriers in p-n junctions and their transport and subsequent recombination in the quasineutral regions. A number of basic issues concerning the physics of the operation of solar cells still remain obscure. This paper discusses some of those unsolved basi...
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| Format: | Article |
| Language: | English |
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Wiley
2011-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2011/976063 |
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| author | Jesús E. Velazquez-Perez Yuri G. Gurevich |
| author_facet | Jesús E. Velazquez-Perez Yuri G. Gurevich |
| author_sort | Jesús E. Velazquez-Perez |
| collection | DOAJ |
| description | Solar cells rely on photogeneration of charge carriers in p-n junctions and their transport and subsequent recombination in the quasineutral regions. A number of basic issues concerning the physics of the operation of solar cells still remain obscure. This paper discusses some of those unsolved basic problems. In conventional solar cells, recombination of photogenerated charge carriers plays a major limiting role in the cell efficiency. High quality thin-film solar cells may overcome this limit if the minority diffusion lengths become large as compared to the cell dimensions, but, strikingly, the conventional model fails to describe the cell electric behavior under these conditions. A new formulation of the basic equations describing charge carrier transport in the cell along with a set of boundary conditions is presented. An analytical closed-form solution is obtained under a linear approximation. In the new framework given, the calculation of the open-circuit voltage of the solar cell diode does not lead to unphysical results. |
| format | Article |
| id | doaj-art-a88ae8197f374f8bac8a6a0b6aa25dcc |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-a88ae8197f374f8bac8a6a0b6aa25dcc2025-02-03T05:58:58ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2011-01-01201110.1155/2011/976063976063Charge-Carrier Transport in Thin Film Solar Cells: New FormulationJesús E. Velazquez-Perez0Yuri G. Gurevich1Departamento de Física Aplicada, Universidad de Salamanca, 37008 Salamanca, SpainDepartamento de Física, CINVESTAV del I.P.N., Apartado Postal 14-740, 07000 Mexico, DF, MexicoSolar cells rely on photogeneration of charge carriers in p-n junctions and their transport and subsequent recombination in the quasineutral regions. A number of basic issues concerning the physics of the operation of solar cells still remain obscure. This paper discusses some of those unsolved basic problems. In conventional solar cells, recombination of photogenerated charge carriers plays a major limiting role in the cell efficiency. High quality thin-film solar cells may overcome this limit if the minority diffusion lengths become large as compared to the cell dimensions, but, strikingly, the conventional model fails to describe the cell electric behavior under these conditions. A new formulation of the basic equations describing charge carrier transport in the cell along with a set of boundary conditions is presented. An analytical closed-form solution is obtained under a linear approximation. In the new framework given, the calculation of the open-circuit voltage of the solar cell diode does not lead to unphysical results.http://dx.doi.org/10.1155/2011/976063 |
| spellingShingle | Jesús E. Velazquez-Perez Yuri G. Gurevich Charge-Carrier Transport in Thin Film Solar Cells: New Formulation International Journal of Photoenergy |
| title | Charge-Carrier Transport in Thin Film Solar Cells: New Formulation |
| title_full | Charge-Carrier Transport in Thin Film Solar Cells: New Formulation |
| title_fullStr | Charge-Carrier Transport in Thin Film Solar Cells: New Formulation |
| title_full_unstemmed | Charge-Carrier Transport in Thin Film Solar Cells: New Formulation |
| title_short | Charge-Carrier Transport in Thin Film Solar Cells: New Formulation |
| title_sort | charge carrier transport in thin film solar cells new formulation |
| url | http://dx.doi.org/10.1155/2011/976063 |
| work_keys_str_mv | AT jesusevelazquezperez chargecarriertransportinthinfilmsolarcellsnewformulation AT yuriggurevich chargecarriertransportinthinfilmsolarcellsnewformulation |