Broadband Absorption and Efficient Hot-Carrier Photovoltaic Conversion based on Sunlight-induced Non-radiative Decay of Propagating Surface Plasmon Polaritons

Abstract Localized surface plasmon polaritons (SPPs), which can decay non-radiatively into hot carriers, have been widely employed to extend the responses of traditional semiconductor-based photocatalytic and photovoltaic devices to sub-bandgap photons. However, radiative decay is unavoidable and ad...

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Autores principales:	Mengzhu Hu, Liu Yang, Hao Dai, Sailing He
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/0c36570ee4c94826a64e48ab9bda0665
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spelling	oai:doaj.org-article:0c36570ee4c94826a64e48ab9bda06652021-12-02T12:32:24ZBroadband Absorption and Efficient Hot-Carrier Photovoltaic Conversion based on Sunlight-induced Non-radiative Decay of Propagating Surface Plasmon Polaritons10.1038/s41598-017-05399-62045-2322https://doaj.org/article/0c36570ee4c94826a64e48ab9bda06652017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-05399-6https://doaj.org/toc/2045-2322Abstract Localized surface plasmon polaritons (SPPs), which can decay non-radiatively into hot carriers, have been widely employed to extend the responses of traditional semiconductor-based photocatalytic and photovoltaic devices to sub-bandgap photons. However, radiative decay is unavoidable and adverse to device performances. Here, we propose to take advantage of propagating SPPs, another form of SPPs, which possess non-radiative decay only. A special gold-titanium dioxide nanowire array with each nanowire capped with a nanocone is proposed. The adjacent nanocones forming top gradual openings attribute to efficient sunlight harvesting, while the neighbouring nanowires forming bottom nanoslots allow sufficient absorption due to the propagating SPPs. With the combined advantages, almost 100% of light is absorbed by a very thin gold film in the visible range, and 73% in the whole considered range of 400–1170 nm, superior to the nanocone cell based on localized SPPs, let alone the nanowire-based and planar counterparts. Therefore, much better photovoltaic conversion performance is achieved with short-circuit current density of 0.74 mA/cm2 and open-circuit voltage of 0.41 V. This work confirms the superiority of non-radiative decay of propagating SPPs to the localized SPPs in terms of generation of hot carriers, providing a promising way of extracting electrons in metal into photocurrent.Mengzhu HuLiu YangHao DaiSailing HeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Mengzhu Hu Liu Yang Hao Dai Sailing He Broadband Absorption and Efficient Hot-Carrier Photovoltaic Conversion based on Sunlight-induced Non-radiative Decay of Propagating Surface Plasmon Polaritons
description	Abstract Localized surface plasmon polaritons (SPPs), which can decay non-radiatively into hot carriers, have been widely employed to extend the responses of traditional semiconductor-based photocatalytic and photovoltaic devices to sub-bandgap photons. However, radiative decay is unavoidable and adverse to device performances. Here, we propose to take advantage of propagating SPPs, another form of SPPs, which possess non-radiative decay only. A special gold-titanium dioxide nanowire array with each nanowire capped with a nanocone is proposed. The adjacent nanocones forming top gradual openings attribute to efficient sunlight harvesting, while the neighbouring nanowires forming bottom nanoslots allow sufficient absorption due to the propagating SPPs. With the combined advantages, almost 100% of light is absorbed by a very thin gold film in the visible range, and 73% in the whole considered range of 400–1170 nm, superior to the nanocone cell based on localized SPPs, let alone the nanowire-based and planar counterparts. Therefore, much better photovoltaic conversion performance is achieved with short-circuit current density of 0.74 mA/cm2 and open-circuit voltage of 0.41 V. This work confirms the superiority of non-radiative decay of propagating SPPs to the localized SPPs in terms of generation of hot carriers, providing a promising way of extracting electrons in metal into photocurrent.
format	article
author	Mengzhu Hu Liu Yang Hao Dai Sailing He
author_facet	Mengzhu Hu Liu Yang Hao Dai Sailing He
author_sort	Mengzhu Hu
title	Broadband Absorption and Efficient Hot-Carrier Photovoltaic Conversion based on Sunlight-induced Non-radiative Decay of Propagating Surface Plasmon Polaritons
title_short	Broadband Absorption and Efficient Hot-Carrier Photovoltaic Conversion based on Sunlight-induced Non-radiative Decay of Propagating Surface Plasmon Polaritons
title_full	Broadband Absorption and Efficient Hot-Carrier Photovoltaic Conversion based on Sunlight-induced Non-radiative Decay of Propagating Surface Plasmon Polaritons
title_fullStr	Broadband Absorption and Efficient Hot-Carrier Photovoltaic Conversion based on Sunlight-induced Non-radiative Decay of Propagating Surface Plasmon Polaritons
title_full_unstemmed	Broadband Absorption and Efficient Hot-Carrier Photovoltaic Conversion based on Sunlight-induced Non-radiative Decay of Propagating Surface Plasmon Polaritons
title_sort	broadband absorption and efficient hot-carrier photovoltaic conversion based on sunlight-induced non-radiative decay of propagating surface plasmon polaritons
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/0c36570ee4c94826a64e48ab9bda0665
work_keys_str_mv	AT mengzhuhu broadbandabsorptionandefficienthotcarrierphotovoltaicconversionbasedonsunlightinducednonradiativedecayofpropagatingsurfaceplasmonpolaritons AT liuyang broadbandabsorptionandefficienthotcarrierphotovoltaicconversionbasedonsunlightinducednonradiativedecayofpropagatingsurfaceplasmonpolaritons AT haodai broadbandabsorptionandefficienthotcarrierphotovoltaicconversionbasedonsunlightinducednonradiativedecayofpropagatingsurfaceplasmonpolaritons AT sailinghe broadbandabsorptionandefficienthotcarrierphotovoltaicconversionbasedonsunlightinducednonradiativedecayofpropagatingsurfaceplasmonpolaritons
_version_	1718394078859624448

Broadband Absorption and Efficient Hot-Carrier Photovoltaic Conversion based on Sunlight-induced Non-radiative Decay of Propagating Surface Plasmon Polaritons

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