Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Tsai, Min-An | en_US |
dc.contributor.author | Han, Hao-Wei | en_US |
dc.contributor.author | Tsai, Yu-Lin | en_US |
dc.contributor.author | Tseng, Ping-Chen | en_US |
dc.contributor.author | Yu, Peichen | en_US |
dc.contributor.author | Kuo, Hao-Chung | en_US |
dc.contributor.author | Shen, Chang-Hong | en_US |
dc.contributor.author | Shieh, Jia-Min | en_US |
dc.contributor.author | Lin, Shiuan-Huei | en_US |
dc.date.accessioned | 2019-04-03T06:36:08Z | - |
dc.date.available | 2019-04-03T06:36:08Z | - |
dc.date.issued | 2011-07-04 | en_US |
dc.identifier.issn | 1094-4087 | en_US |
dc.identifier.uri | http://dx.doi.org/10.1364/OE.19.00A757 | en_US |
dc.identifier.uri | http://hdl.handle.net/11536/21692 | - |
dc.description.abstract | Light-management is critical to thin film solar cells due to their usually limited optical absorption in the active layer. Conventional approaches involve employing separate techniques for anti-reflection and light trapping. Here, we demonstrate an embedded biomimetic nanostructure (EBN) that achieves both effects for hydrogenated amorphous silicon (a-Si: H) solar cells. The fabrication of EBNs is accomplished by patterning an index-matching silicon-nitride layer deposited on a glass substrate using polystyrene nanospheres lithography, followed by reactive ion etching. The profile of EBN is then reproduced layer by layer during the deposition of a-Si: H cells. We show that a solar cell with an optimized EBN exhibits a broadband enhanced external quantum efficiency due to both antireflection and light-trapping, with respect to an industrial standard cell using an Asahi U glass substrate which is mostly optimized for light trapping. Overall, the cell with an optimized EBN achieves a large short-circuit current density of 17.74 mA/cm(2), corresponding to a 37.63% enhancement over a flat control cell. The power conversion efficiency is also increased from 5.36% to 8.32%. Moreover, the light management enabled by the EBN remains efficient over a wide range of incident angles up to 60 degrees, which is particularly desirable for real environments with diffused sun light. The novel patterning method is not restricted to a-Si:H solar cells, but is also widely applicable to other thin film materials. (C) 2011 Optical Society of America | en_US |
dc.language.iso | en_US | en_US |
dc.title | Embedded biomimetic nanostructures for enhanced optical absorption in thin-film solar cells | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1364/OE.19.00A757 | en_US |
dc.identifier.journal | OPTICS EXPRESS | en_US |
dc.citation.volume | 19 | en_US |
dc.citation.issue | 14 | en_US |
dc.citation.spage | 0 | en_US |
dc.citation.epage | 0 | en_US |
dc.contributor.department | 光電系統研究所 | zh_TW |
dc.contributor.department | 電子物理學系 | zh_TW |
dc.contributor.department | 光電工程學系 | zh_TW |
dc.contributor.department | 光電工程研究所 | zh_TW |
dc.contributor.department | Institute of Photonic System | en_US |
dc.contributor.department | Department of Electrophysics | en_US |
dc.contributor.department | Department of Photonics | en_US |
dc.contributor.department | Institute of EO Enginerring | en_US |
dc.identifier.wosnumber | WOS:000292876500015 | en_US |
dc.citation.woscount | 12 | en_US |
Appears in Collections: | Articles |
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