Fabrication of Silicon Hierarchical Structures for Solar Cell Applications
Hierarchical silicon structures consisting of micropyramids and nanowire arrays are fabricated by two-step chemical etching processes aimed at achieving cost and time effectiveness constraints without using any expensive vacuum system or complicated lithography process. The hierarchical structures c...
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| Format: | Article |
| Language: | English |
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IEEE
2019-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/8565843/ |
| _version_ | 1818617923418193920 |
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| author | Hsin-Ping Wang Dharmaraj Periyanagounder An-Cheng Li Jr-Hau He |
| author_facet | Hsin-Ping Wang Dharmaraj Periyanagounder An-Cheng Li Jr-Hau He |
| author_sort | Hsin-Ping Wang |
| collection | DOAJ |
| description | Hierarchical silicon structures consisting of micropyramids and nanowire arrays are fabricated by two-step chemical etching processes aimed at achieving cost and time effectiveness constraints without using any expensive vacuum system or complicated lithography process. The hierarchical structures can suppress the average reflectance to as low as 4.3% from 300 to 1100 nm without causing poor minority carrier lifetimes, exhibiting excellent broadband light-harvesting abilities with minimal recombination losses, which is the key point to design high-performance nanostructured solar cells. By utilizing hierarchical structures in the practical solar cells application, the short-circuit current density (JSC) shows a significant enhancement from 21.5 to 28.7 mA/cm<sup>2</sup>, and the conversion efficiency is enhanced by a factor of 35%. Such a significant enhancement is attributed not only to the superior light harvesting achieved by hierarchical structures but also to the benefit of small electrical losses in the solar cells. Thus, the concept and technique presented in this paper open avenues for developing high-performance structure solar devices. |
| first_indexed | 2024-12-16T17:13:24Z |
| format | Article |
| id | doaj.art-897622d88ada4731b9849d547962b503 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-16T17:13:24Z |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-897622d88ada4731b9849d547962b5032022-12-21T22:23:21ZengIEEEIEEE Access2169-35362019-01-017193951940010.1109/ACCESS.2018.28851698565843Fabrication of Silicon Hierarchical Structures for Solar Cell ApplicationsHsin-Ping Wang0Dharmaraj Periyanagounder1An-Cheng Li2Jr-Hau He3https://orcid.org/0000-0003-1886-9241Computer, Electrical and Mathematical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, Saudi ArabiaComputer, Electrical and Mathematical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, Saudi ArabiaComputer, Electrical and Mathematical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, Saudi ArabiaComputer, Electrical and Mathematical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, Saudi ArabiaHierarchical silicon structures consisting of micropyramids and nanowire arrays are fabricated by two-step chemical etching processes aimed at achieving cost and time effectiveness constraints without using any expensive vacuum system or complicated lithography process. The hierarchical structures can suppress the average reflectance to as low as 4.3% from 300 to 1100 nm without causing poor minority carrier lifetimes, exhibiting excellent broadband light-harvesting abilities with minimal recombination losses, which is the key point to design high-performance nanostructured solar cells. By utilizing hierarchical structures in the practical solar cells application, the short-circuit current density (JSC) shows a significant enhancement from 21.5 to 28.7 mA/cm<sup>2</sup>, and the conversion efficiency is enhanced by a factor of 35%. Such a significant enhancement is attributed not only to the superior light harvesting achieved by hierarchical structures but also to the benefit of small electrical losses in the solar cells. Thus, the concept and technique presented in this paper open avenues for developing high-performance structure solar devices.https://ieeexplore.ieee.org/document/8565843/Hierarchical structuresmicropyramidslight-harvestingpower conversion efficiencysurface recombination |
| spellingShingle | Hsin-Ping Wang Dharmaraj Periyanagounder An-Cheng Li Jr-Hau He Fabrication of Silicon Hierarchical Structures for Solar Cell Applications IEEE Access Hierarchical structures micropyramids light-harvesting power conversion efficiency surface recombination |
| title | Fabrication of Silicon Hierarchical Structures for Solar Cell Applications |
| title_full | Fabrication of Silicon Hierarchical Structures for Solar Cell Applications |
| title_fullStr | Fabrication of Silicon Hierarchical Structures for Solar Cell Applications |
| title_full_unstemmed | Fabrication of Silicon Hierarchical Structures for Solar Cell Applications |
| title_short | Fabrication of Silicon Hierarchical Structures for Solar Cell Applications |
| title_sort | fabrication of silicon hierarchical structures for solar cell applications |
| topic | Hierarchical structures micropyramids light-harvesting power conversion efficiency surface recombination |
| url | https://ieeexplore.ieee.org/document/8565843/ |
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