Extreme absorption enhancement in ZnTe:O/ZnO intermediate band core-shell nanowires by interplay of dielectric resonance and plasmonic bowtie nanoantennas

Abstract Intermediate band solar cells (IBSCs) are conceptual and promising for next generation high efficiency photovoltaic devices, whereas, IB impact on the cell performance is still marginal due to the weak absorption of IB states. Here a rational design of a hybrid structure composed of ZnTe:O/...

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Autores principales:	Kui-Ying Nie, Jing Li, Xuanhu Chen, Yang Xu, Xuecou Tu, Fang-Fang Ren, Qingguo Du, Lan Fu, Lin Kang, Kun Tang, Shulin Gu, Rong Zhang, Peiheng Wu, Youdou Zheng, Hark Hoe Tan, Chennupati Jagadish, Jiandong Ye
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c3bb83af3adf437eae486ecb45ccdbd9
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spelling	oai:doaj.org-article:c3bb83af3adf437eae486ecb45ccdbd92021-12-02T11:53:03ZExtreme absorption enhancement in ZnTe:O/ZnO intermediate band core-shell nanowires by interplay of dielectric resonance and plasmonic bowtie nanoantennas10.1038/s41598-017-07970-72045-2322https://doaj.org/article/c3bb83af3adf437eae486ecb45ccdbd92017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07970-7https://doaj.org/toc/2045-2322Abstract Intermediate band solar cells (IBSCs) are conceptual and promising for next generation high efficiency photovoltaic devices, whereas, IB impact on the cell performance is still marginal due to the weak absorption of IB states. Here a rational design of a hybrid structure composed of ZnTe:O/ZnO core-shell nanowires (NWs) with Al bowtie nanoantennas is demonstrated to exhibit strong ability in tuning and enhancing broadband light response. The optimized nanowire dimensions enable absorption enhancement by engineering leaky-mode dielectric resonances. It maximizes the overlap of the absorption spectrum and the optical transitions in ZnTe:O intermediate-band (IB) photovoltaic materials, as verified by the enhanced photoresponse especially for IB states in an individual nanowire device. Furthermore, by integrating Al bowtie antennas, the enhanced exciton-plasmon coupling enables the notable improvement in the absorption of ZnTe:O/ZnO core-shell single NW, which was demonstrated by the profound enhancement of photoluminescence and resonant Raman scattering. The marriage of dielectric and metallic resonance effects in subwavelength-scale nanowires opens up new avenues for overcoming the poor absorption of sub-gap photons by IB states in ZnTe:O to achieve high-efficiency IBSCs.Kui-Ying NieJing LiXuanhu ChenYang XuXuecou TuFang-Fang RenQingguo DuLan FuLin KangKun TangShulin GuRong ZhangPeiheng WuYoudou ZhengHark Hoe TanChennupati JagadishJiandong YeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kui-Ying Nie Jing Li Xuanhu Chen Yang Xu Xuecou Tu Fang-Fang Ren Qingguo Du Lan Fu Lin Kang Kun Tang Shulin Gu Rong Zhang Peiheng Wu Youdou Zheng Hark Hoe Tan Chennupati Jagadish Jiandong Ye Extreme absorption enhancement in ZnTe:O/ZnO intermediate band core-shell nanowires by interplay of dielectric resonance and plasmonic bowtie nanoantennas
description	Abstract Intermediate band solar cells (IBSCs) are conceptual and promising for next generation high efficiency photovoltaic devices, whereas, IB impact on the cell performance is still marginal due to the weak absorption of IB states. Here a rational design of a hybrid structure composed of ZnTe:O/ZnO core-shell nanowires (NWs) with Al bowtie nanoantennas is demonstrated to exhibit strong ability in tuning and enhancing broadband light response. The optimized nanowire dimensions enable absorption enhancement by engineering leaky-mode dielectric resonances. It maximizes the overlap of the absorption spectrum and the optical transitions in ZnTe:O intermediate-band (IB) photovoltaic materials, as verified by the enhanced photoresponse especially for IB states in an individual nanowire device. Furthermore, by integrating Al bowtie antennas, the enhanced exciton-plasmon coupling enables the notable improvement in the absorption of ZnTe:O/ZnO core-shell single NW, which was demonstrated by the profound enhancement of photoluminescence and resonant Raman scattering. The marriage of dielectric and metallic resonance effects in subwavelength-scale nanowires opens up new avenues for overcoming the poor absorption of sub-gap photons by IB states in ZnTe:O to achieve high-efficiency IBSCs.
format	article
author	Kui-Ying Nie Jing Li Xuanhu Chen Yang Xu Xuecou Tu Fang-Fang Ren Qingguo Du Lan Fu Lin Kang Kun Tang Shulin Gu Rong Zhang Peiheng Wu Youdou Zheng Hark Hoe Tan Chennupati Jagadish Jiandong Ye
author_facet	Kui-Ying Nie Jing Li Xuanhu Chen Yang Xu Xuecou Tu Fang-Fang Ren Qingguo Du Lan Fu Lin Kang Kun Tang Shulin Gu Rong Zhang Peiheng Wu Youdou Zheng Hark Hoe Tan Chennupati Jagadish Jiandong Ye
author_sort	Kui-Ying Nie
title	Extreme absorption enhancement in ZnTe:O/ZnO intermediate band core-shell nanowires by interplay of dielectric resonance and plasmonic bowtie nanoantennas
title_short	Extreme absorption enhancement in ZnTe:O/ZnO intermediate band core-shell nanowires by interplay of dielectric resonance and plasmonic bowtie nanoantennas
title_full	Extreme absorption enhancement in ZnTe:O/ZnO intermediate band core-shell nanowires by interplay of dielectric resonance and plasmonic bowtie nanoantennas
title_fullStr	Extreme absorption enhancement in ZnTe:O/ZnO intermediate band core-shell nanowires by interplay of dielectric resonance and plasmonic bowtie nanoantennas
title_full_unstemmed	Extreme absorption enhancement in ZnTe:O/ZnO intermediate band core-shell nanowires by interplay of dielectric resonance and plasmonic bowtie nanoantennas
title_sort	extreme absorption enhancement in znte:o/zno intermediate band core-shell nanowires by interplay of dielectric resonance and plasmonic bowtie nanoantennas
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/c3bb83af3adf437eae486ecb45ccdbd9
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Extreme absorption enhancement in ZnTe:O/ZnO intermediate band core-shell nanowires by interplay of dielectric resonance and plasmonic bowtie nanoantennas

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