Shadow-epitaxy for flexible crystalline thin-film silicon solar cell design
Crystalline silicon thin-film solar modules require a cost-effective means for the fabrication of an integrated series connection. We introduce selective epitaxy by ion-assisted deposition through shadow masks for the integrated series connection of ultrathin monocrystalline and textured Si solar ce...
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| Veröffentlicht in: | Solar energy materials and solar cells 2000-10, Vol.64 (3), p.251-260 |
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| container_title | Solar energy materials and solar cells |
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| creator | Brendel, Rolf Feldrapp, Karlheinz Oelting, Stefan |
| description | Crystalline silicon thin-film solar modules require a cost-effective means for the fabrication of an integrated series connection. We introduce selective epitaxy by ion-assisted deposition through shadow masks for the integrated series connection of ultrathin monocrystalline and textured Si solar cells. The series connection is made in situ during Si-film deposition thus avoiding any trench etching. The open-circuit voltage of an experimental mini-module consisting of six cells is six times as large as the open-circuit voltage of a single cell. Epitaxy through shadow masks also permits the in situ realization of parallel multi-junction solar cells. The experimental quantum efficiency analysis of a parallel multi-junction device with three junctions reveals an enhanced carrier collection. The apparent effective diffusion length of the multi-junction cell is three times larger than that for a conventional single-junction device. |
| doi_str_mv | 10.1016/S0927-0248(00)00224-5 |
| format | Article |
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We introduce selective epitaxy by ion-assisted deposition through shadow masks for the integrated series connection of ultrathin monocrystalline and textured Si solar cells. The series connection is made in situ during Si-film deposition thus avoiding any trench etching. The open-circuit voltage of an experimental mini-module consisting of six cells is six times as large as the open-circuit voltage of a single cell. Epitaxy through shadow masks also permits the in situ realization of parallel multi-junction solar cells. The experimental quantum efficiency analysis of a parallel multi-junction device with three junctions reveals an enhanced carrier collection. 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The apparent effective diffusion length of the multi-junction cell is three times larger than that for a conventional single-junction device.</description><subject>Applied sciences</subject><subject>Crystalline materials</subject><subject>Electric potential</subject><subject>Energy</subject><subject>Epitaxial growth</subject><subject>Epitaxy</subject><subject>Exact sciences and technology</subject><subject>Integrated series connection</subject><subject>Masks</subject><subject>Multi-junction</subject><subject>Natural energy</subject><subject>Photovoltaic conversion</subject><subject>Porous silicon</subject><subject>Quantum efficiency</subject><subject>Reactive ion etching</subject><subject>Solar cells. 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| fulltext | fulltext |
| identifier | ISSN: 0927-0248 |
| ispartof | Solar energy materials and solar cells, 2000-10, Vol.64 (3), p.251-260 |
| issn | 0927-0248 1879-3398 |
| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Applied sciences Crystalline materials Electric potential Energy Epitaxial growth Epitaxy Exact sciences and technology Integrated series connection Masks Multi-junction Natural energy Photovoltaic conversion Porous silicon Quantum efficiency Reactive ion etching Solar cells. Photoelectrochemical cells Solar energy Thin film Thin films |
| title | Shadow-epitaxy for flexible crystalline thin-film silicon solar cell design |
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