Omnidirectional Light Capture by Solar Cells Mimicking the Structures of the Epidermal cells of Leaves

Abstract It is important to develop solar cells that can capture and utilize omnidirectional light in urban environments, where photovoltaic (PV) devices are installed in fixed directions. We report a new design for such light capture, which mimics the structure of a leaf epidermis. First, we analyz...

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Autores principales:	Min Ju Yun, Yeon Hyang Sim, Seung I. Cha, Dong Yoon Lee
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a3f20f0d4490431cb7fedc5947afec4b
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spelling	oai:doaj.org-article:a3f20f0d4490431cb7fedc5947afec4b2021-12-02T15:08:47ZOmnidirectional Light Capture by Solar Cells Mimicking the Structures of the Epidermal cells of Leaves10.1038/s41598-019-49046-82045-2322https://doaj.org/article/a3f20f0d4490431cb7fedc5947afec4b2019-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-49046-8https://doaj.org/toc/2045-2322Abstract It is important to develop solar cells that can capture and utilize omnidirectional light in urban environments, where photovoltaic (PV) devices are installed in fixed directions. We report a new design for such light capture, which mimics the structure of a leaf epidermis. First, we analyzed the epidermal structures of different plant species in detail so that we could copy them and fabricate light-trapping layers with different shapes: as lens arrays, pillars, and lens arrays with rough surfaces. Then we analyzed the results of two-dimensional ray-tracing simulations of perfectly aligned and Gaussian-scattered incident light in terms of light-trapping capabilities. Based on these results, we prepared high-performance dye-sensitized solar cells with light-trapping layers that exhibited omnidirectional light capturing functionality. Our layers enhanced the efficiency of obliquely incident light capture by 70%. Therefore, we expect that new possibilities for next-generation PVs, extending beyond the current rigid concepts, will arise upon the application of these results and from findings that build on these results.Min Ju YunYeon Hyang SimSeung I. ChaDong Yoon LeeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-9 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Min Ju Yun Yeon Hyang Sim Seung I. Cha Dong Yoon Lee Omnidirectional Light Capture by Solar Cells Mimicking the Structures of the Epidermal cells of Leaves
description	Abstract It is important to develop solar cells that can capture and utilize omnidirectional light in urban environments, where photovoltaic (PV) devices are installed in fixed directions. We report a new design for such light capture, which mimics the structure of a leaf epidermis. First, we analyzed the epidermal structures of different plant species in detail so that we could copy them and fabricate light-trapping layers with different shapes: as lens arrays, pillars, and lens arrays with rough surfaces. Then we analyzed the results of two-dimensional ray-tracing simulations of perfectly aligned and Gaussian-scattered incident light in terms of light-trapping capabilities. Based on these results, we prepared high-performance dye-sensitized solar cells with light-trapping layers that exhibited omnidirectional light capturing functionality. Our layers enhanced the efficiency of obliquely incident light capture by 70%. Therefore, we expect that new possibilities for next-generation PVs, extending beyond the current rigid concepts, will arise upon the application of these results and from findings that build on these results.
format	article
author	Min Ju Yun Yeon Hyang Sim Seung I. Cha Dong Yoon Lee
author_facet	Min Ju Yun Yeon Hyang Sim Seung I. Cha Dong Yoon Lee
author_sort	Min Ju Yun
title	Omnidirectional Light Capture by Solar Cells Mimicking the Structures of the Epidermal cells of Leaves
title_short	Omnidirectional Light Capture by Solar Cells Mimicking the Structures of the Epidermal cells of Leaves
title_full	Omnidirectional Light Capture by Solar Cells Mimicking the Structures of the Epidermal cells of Leaves
title_fullStr	Omnidirectional Light Capture by Solar Cells Mimicking the Structures of the Epidermal cells of Leaves
title_full_unstemmed	Omnidirectional Light Capture by Solar Cells Mimicking the Structures of the Epidermal cells of Leaves
title_sort	omnidirectional light capture by solar cells mimicking the structures of the epidermal cells of leaves
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/a3f20f0d4490431cb7fedc5947afec4b
work_keys_str_mv	AT minjuyun omnidirectionallightcapturebysolarcellsmimickingthestructuresoftheepidermalcellsofleaves AT yeonhyangsim omnidirectionallightcapturebysolarcellsmimickingthestructuresoftheepidermalcellsofleaves AT seungicha omnidirectionallightcapturebysolarcellsmimickingthestructuresoftheepidermalcellsofleaves AT dongyoonlee omnidirectionallightcapturebysolarcellsmimickingthestructuresoftheepidermalcellsofleaves
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Omnidirectional Light Capture by Solar Cells Mimicking the Structures of the Epidermal cells of Leaves

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