Nanowire decorated, ultra-thin, single crystalline silicon for photovoltaic devices

Date

2015-11-29

Author

Aurang, Pantea
Es, Fırat
Turan, Raşit
Ünalan, Hüsnü Emrah

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Reducing silicon (Si) wafer thickness in the photovoltaic industry has always been demanded for lowering the overall cost. Further benefits such as short collection lengths and improved open circuit voltages can also be achieved by Si thickness reduction. However, the problem with thin films is poor light absorption. One way to decrease optical losses in photovoltaic devices is to minimize the front side reflection. This approach can be applied to front contacted ultra-thin crystalline Si solar cells to increase the light absorption. In this work, homojunction solar cells were fabricated using ultra-thin and flexible single crystal Si wafers. A metal assisted chemical etching method was used for the nanowire (NW) texturization of ultra-thin Si wafers to compensate weak light absorption. A relative improvement of 56% in the reflectivity was observed for ultra-thin Si wafers with the thickness of 20 ± 0.2 μm upon NW texturization. NW length and top contact optimization resulted in a relative enhancement of 23% ± 5% in photovoltaic conversion efficiency.

URI

https://hdl.handle.net/11511/82851
https://iopscience.iop.org/article/10.1088/1361-6528/aa81b9

Conference Name

MRS Fall Meeting' 2015 29 Kasım - 04 Aralık 2015)

Collections

Department of Physics, Conference / Seminar

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Citation Formats

P. Aurang, F. Es, R. Turan, and H. E. Ünalan, “Nanowire decorated, ultra-thin, single crystalline silicon for photovoltaic devices,” presented at the MRS Fall Meeting’ 2015 29 Kasım - 04 Aralık 2015), 2015, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/82851.