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Design of dual-diameter nanoholes for efficient solar-light harvesting
A dual-diameter nanohole (DNH) photovoltaic system is proposed, where a top (bottom) layer with large (small) nanoholes is used to improve the absorption for the short-wavelength (long-wavelength) solar incidence, leading to a broadband light absorption enhancement. Through three-dimensional finite-...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4164666/ https://www.ncbi.nlm.nih.gov/pubmed/25258605 http://dx.doi.org/10.1186/1556-276X-9-481 |
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author | Zhang, Cheng Li, Xiaofeng Shang, Aixue Wu, Shaolong Zhan, Yaohui Yang, Zhenhai |
author_facet | Zhang, Cheng Li, Xiaofeng Shang, Aixue Wu, Shaolong Zhan, Yaohui Yang, Zhenhai |
author_sort | Zhang, Cheng |
collection | PubMed |
description | A dual-diameter nanohole (DNH) photovoltaic system is proposed, where a top (bottom) layer with large (small) nanoholes is used to improve the absorption for the short-wavelength (long-wavelength) solar incidence, leading to a broadband light absorption enhancement. Through three-dimensional finite-element simulation, the core device parameters, including the lattice constant, nanohole diameters, and nanohole depths, are engineered in order to realize the best light-matter coupling between nanostructured silicon and solar spectrum. The designed bare DNH system exhibits an outstanding absorption capability with a photocurrent density (under perfect internal quantum process) predicted to be 27.93 mA/cm(2), which is 17.39%, 26.17%, and over 100% higher than the best single-nanohole (SNH) system, SNH system with an identical Si volume, and equivalent planar configuration, respectively. Considering the fabrication feasibility, a modified DNH system with an anti-reflection coating and back silver reflector is examined by simulating both optical absorption and carrier transport in a coupled way in frequency and three-dimensional spatial domains, achieving a light-conversion efficiency of 13.72%. PACS: 85.60.-q; Optoelectronic device; 84.60.Jt; Photovoltaic conversion |
format | Online Article Text |
id | pubmed-4164666 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Springer |
record_format | MEDLINE/PubMed |
spelling | pubmed-41646662014-09-25 Design of dual-diameter nanoholes for efficient solar-light harvesting Zhang, Cheng Li, Xiaofeng Shang, Aixue Wu, Shaolong Zhan, Yaohui Yang, Zhenhai Nanoscale Res Lett Nano Express A dual-diameter nanohole (DNH) photovoltaic system is proposed, where a top (bottom) layer with large (small) nanoholes is used to improve the absorption for the short-wavelength (long-wavelength) solar incidence, leading to a broadband light absorption enhancement. Through three-dimensional finite-element simulation, the core device parameters, including the lattice constant, nanohole diameters, and nanohole depths, are engineered in order to realize the best light-matter coupling between nanostructured silicon and solar spectrum. The designed bare DNH system exhibits an outstanding absorption capability with a photocurrent density (under perfect internal quantum process) predicted to be 27.93 mA/cm(2), which is 17.39%, 26.17%, and over 100% higher than the best single-nanohole (SNH) system, SNH system with an identical Si volume, and equivalent planar configuration, respectively. Considering the fabrication feasibility, a modified DNH system with an anti-reflection coating and back silver reflector is examined by simulating both optical absorption and carrier transport in a coupled way in frequency and three-dimensional spatial domains, achieving a light-conversion efficiency of 13.72%. PACS: 85.60.-q; Optoelectronic device; 84.60.Jt; Photovoltaic conversion Springer 2014-09-11 /pmc/articles/PMC4164666/ /pubmed/25258605 http://dx.doi.org/10.1186/1556-276X-9-481 Text en Copyright © 2014 Zhang et al.; licensee Springer. http://creativecommons.org/licenses/by/4.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. |
spellingShingle | Nano Express Zhang, Cheng Li, Xiaofeng Shang, Aixue Wu, Shaolong Zhan, Yaohui Yang, Zhenhai Design of dual-diameter nanoholes for efficient solar-light harvesting |
title | Design of dual-diameter nanoholes for efficient solar-light harvesting |
title_full | Design of dual-diameter nanoholes for efficient solar-light harvesting |
title_fullStr | Design of dual-diameter nanoholes for efficient solar-light harvesting |
title_full_unstemmed | Design of dual-diameter nanoholes for efficient solar-light harvesting |
title_short | Design of dual-diameter nanoholes for efficient solar-light harvesting |
title_sort | design of dual-diameter nanoholes for efficient solar-light harvesting |
topic | Nano Express |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4164666/ https://www.ncbi.nlm.nih.gov/pubmed/25258605 http://dx.doi.org/10.1186/1556-276X-9-481 |
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