Integration of Self-Assembled Porous Alumina and Distributed Bragg Reflector for Light Trapping in Si Photovoltaic Devices
Light trapping is an important issue for thin film silicon photovoltaic cells due to the limited absorption coefficient for near infrared light. In this letter, we present a photonic structure that combines porous anodic aluminum oxide with a distributed Bragg reflector (DBR) on the backside of Si c...
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| Format: | Article |
| Language: | en_US |
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Institute of Electrical and Electronics Engineers
2011
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| Online Access: | http://hdl.handle.net/1721.1/64718 https://orcid.org/0000-0002-3913-6189 |
| _version_ | 1826203023312945152 |
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| author | Sheng, Xing Liu, Jifeng Coronel, Naomi Agarwal, Anuradha Murthy Michel, Jurgen Kimerling, Lionel C. |
| author2 | MIT Materials Research Laboratory |
| author_facet | MIT Materials Research Laboratory Sheng, Xing Liu, Jifeng Coronel, Naomi Agarwal, Anuradha Murthy Michel, Jurgen Kimerling, Lionel C. |
| author_sort | Sheng, Xing |
| collection | MIT |
| description | Light trapping is an important issue for thin film silicon photovoltaic cells due to the limited absorption coefficient for near infrared light. In this letter, we present a photonic structure that combines porous anodic aluminum oxide with a distributed Bragg reflector (DBR) on the backside of Si cells for light trapping. Simulation results show that this low-cost, self-assembled structure can provide more than 50% relative efficiency enhancement for a 2 μm thin film crystalline Si solar cell, as compared to a reference cell without any back structure. As a proof of concept, we incorporated the backside structure into thick silicon wafers. The enhancement of light absorption near the band edge of silicon is demonstrated for our proposed light-trapping structure, in agreement with the theoretical predictions. |
| first_indexed | 2024-09-23T12:30:29Z |
| format | Article |
| id | mit-1721.1/64718 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:30:29Z |
| publishDate | 2011 |
| publisher | Institute of Electrical and Electronics Engineers |
| record_format | dspace |
| spelling | mit-1721.1/647182022-10-01T09:23:07Z Integration of Self-Assembled Porous Alumina and Distributed Bragg Reflector for Light Trapping in Si Photovoltaic Devices Sheng, Xing Liu, Jifeng Coronel, Naomi Agarwal, Anuradha Murthy Michel, Jurgen Kimerling, Lionel C. MIT Materials Research Laboratory Massachusetts Institute of Technology. Department of Materials Science and Engineering Sheng, Xing Sheng, Xing Liu, Jifeng Coronel, Naomi Agarwal, Anuradha Murthy Michel, Jurgen Kimerling, Lionel C. Light trapping is an important issue for thin film silicon photovoltaic cells due to the limited absorption coefficient for near infrared light. In this letter, we present a photonic structure that combines porous anodic aluminum oxide with a distributed Bragg reflector (DBR) on the backside of Si cells for light trapping. Simulation results show that this low-cost, self-assembled structure can provide more than 50% relative efficiency enhancement for a 2 μm thin film crystalline Si solar cell, as compared to a reference cell without any back structure. As a proof of concept, we incorporated the backside structure into thick silicon wafers. The enhancement of light absorption near the band edge of silicon is demonstrated for our proposed light-trapping structure, in agreement with the theoretical predictions. MIT Energy Initiative Robert Bosch, LLC Masdar Institute of Science and Technology 2011-06-30T15:04:33Z 2011-06-30T15:04:33Z 2010-09 2010-06 Article http://purl.org/eprint/type/JournalArticle 1041-1135 INSPEC Accession Number: 11489334 http://hdl.handle.net/1721.1/64718 Xing Sheng et al. “Integration of Self-Assembled Porous Alumina and Distributed Bragg Reflector for Light Trapping in Si Photovoltaic Devices.” Photonics Technology Letters, IEEE 22.18 (2010) : 1394-1396. © Copyright 2010 IEEE https://orcid.org/0000-0002-3913-6189 en_US http://dx.doi.org/10.1109/LPT.2010.2060717 IEEE Photonics Technology Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Institute of Electrical and Electronics Engineers Xing Sheng |
| spellingShingle | Sheng, Xing Liu, Jifeng Coronel, Naomi Agarwal, Anuradha Murthy Michel, Jurgen Kimerling, Lionel C. Integration of Self-Assembled Porous Alumina and Distributed Bragg Reflector for Light Trapping in Si Photovoltaic Devices |
| title | Integration of Self-Assembled Porous Alumina and Distributed Bragg Reflector for Light Trapping in Si Photovoltaic Devices |
| title_full | Integration of Self-Assembled Porous Alumina and Distributed Bragg Reflector for Light Trapping in Si Photovoltaic Devices |
| title_fullStr | Integration of Self-Assembled Porous Alumina and Distributed Bragg Reflector for Light Trapping in Si Photovoltaic Devices |
| title_full_unstemmed | Integration of Self-Assembled Porous Alumina and Distributed Bragg Reflector for Light Trapping in Si Photovoltaic Devices |
| title_short | Integration of Self-Assembled Porous Alumina and Distributed Bragg Reflector for Light Trapping in Si Photovoltaic Devices |
| title_sort | integration of self assembled porous alumina and distributed bragg reflector for light trapping in si photovoltaic devices |
| url | http://hdl.handle.net/1721.1/64718 https://orcid.org/0000-0002-3913-6189 |
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