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

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

doi:10.1038/s41598-017-07970-7

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

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

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.

Original language	English
Article number	7503
Journal	Scientific Reports
Volume	7
Issue number	1
DOIs	https://doi.org/10.1038/s41598-017-07970-7
Publication status	Published - 1 Dec 2017

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Nie, K. Y., Li, J., Chen, X., Xu, Y., Tu, X., Ren, F. F., Du, Q., Fu, L., Kang, L., Tang, K., Gu, S., Zhang, R., Wu, P., Zheng, Y., Tan, H. H., Jagadish, C., & Ye, J. (2017). Extreme absorption enhancement in ZnTe:O/ZnO intermediate band core-shell nanowires by interplay of dielectric resonance and plasmonic bowtie nanoantennas. Scientific Reports, 7(1), Article 7503. https://doi.org/10.1038/s41598-017-07970-7

@article{674c6f6440ac4dbfbc128d1f897e514d,

title = "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/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.",

author = "Nie, {Kui Ying} and Jing Li and Xuanhu Chen and Yang Xu and Xuecou Tu and Ren, {Fang Fang} and Qingguo Du and Lan Fu and Lin Kang and Kun Tang and Shulin Gu and Rong Zhang and Peiheng Wu and Youdou Zheng and Tan, {Hark Hoe} and Chennupati Jagadish and Jiandong Ye",

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doi = "10.1038/s41598-017-07970-7",

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Nie, KY, Li, J, Chen, X, Xu, Y, Tu, X, Ren, FF, Du, Q, Fu, L, Kang, L, Tang, K, Gu, S, Zhang, R, Wu, P, Zheng, Y, Tan, HH , Jagadish, C & Ye, J 2017, 'Extreme absorption enhancement in ZnTe:O/ZnO intermediate band core-shell nanowires by interplay of dielectric resonance and plasmonic bowtie nanoantennas', Scientific Reports, vol. 7, no. 1, 7503. https://doi.org/10.1038/s41598-017-07970-7

TY - JOUR

T1 - Extreme absorption enhancement in ZnTe:O/ZnO intermediate band core-shell nanowires by interplay of dielectric resonance and plasmonic bowtie nanoantennas

AU - Nie, Kui Ying

AU - Li, Jing

AU - Chen, Xuanhu

AU - Xu, Yang

AU - Tu, Xuecou

AU - Ren, Fang Fang

AU - Du, Qingguo

AU - Fu, Lan

AU - Kang, Lin

AU - Tang, Kun

AU - Gu, Shulin

AU - Zhang, Rong

AU - Wu, Peiheng

AU - Zheng, Youdou

AU - Tan, Hark Hoe

AU - Jagadish, Chennupati

AU - Ye, Jiandong

PY - 2017/12/1

Y1 - 2017/12/1

N2 - 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.

AB - 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.

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U2 - 10.1038/s41598-017-07970-7

DO - 10.1038/s41598-017-07970-7

M3 - Article

SN - 2045-2322

VL - 7

JO - Scientific Reports

JF - Scientific Reports

IS - 1

M1 - 7503

ER -

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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