首页|Additive engineering for Sb2S3 indoor photovoltaics with efficiency exceeding 17％

Additive engineering for Sb2S3 indoor photovoltaics with efficiency exceeding 17％

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  • 国家科技期刊平台
  • NETL
  • NSTL
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Indoor photovoltaics(IPVs)have attracted increasing attention for sustainably powering Internet of Things(IoT)electronics.Sb2S3 is a promising IPV candidate material with a bandgap of～1.75 eV,which is near the optimal value for indoor energy harvesting.However,the performance of Sb2S3 solar cells is limited by nonradiative recombination,which is dependent on the quality of the absorber films.Additive engineering is an effective strategy to fine tune the properties of solution-processed films.This work shows that the addition of monoethanolamine(MEA)into the precursor solution allows the nucleation and growth of Sb2S3 films to be controlled,enabling the deposition of high-quality Sb2S3 absorbers with reduced grain boundary density,optimized band positions,and increased carrier concentration.Complemented with computations,it is revealed that the incorporation of MEA leads to a more efficient and energetically favorable deposition for enhanced heterogeneous nucleation on the substrate,which increases the grain size and accelerates the deposition rate of Sb2S3 films.Due to suppressed carrier recombination and improved charge-carrier transport in Sb2S3 absorber films,the MEA-modulated Sb2S3 solar cell yields a power conversion efficiency(PCE)of 7.22％under AM1.5 G illumination,and an IPV PCE of 17.55％under 1000 lux white light emitting diode(WLED)illumination,which is the highest yet reported for Sb2S3 IPVs.Furthermore,we construct high performance large-area Sb2S3 IPV minimodules to power IoT wireless sensors,and realize the long-term continuous recording of environmental parameters under WLED illumination in an office.This work highlights the great prospect of Sb2S3 photovoltaics for indoor energy harvesting.

Xiao Chen、Xiaoxuan Shu、Jiacheng Zhou、Lei Wan、Peng Xiao、Yuchen Fu、Junzhi Ye、Yi-Teng Huang、Bin Yan、Dingjiang Xue、Tao Chen、Jiejie Chen、Robert L.Z.Hoye、Ru Zhou

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School of Electrical Engineering and Automation,Hefei University of Technology,Hefei 230009,PR China

Department of Environmental Science and Engineering,Key Laboratory of Urban Pollutant Conversion,University of Science and Technology of China,Hefei 230009,PR China

Hefei National Research Center for Physical Sciences at the Microscale,School of Chemistry and Materials Science,University of Science and Technology of China,Hefei 230026,PR China

Department of Chemistry,Inorganic Chemistry Laboratory,University of Oxford,South Parks Road,Oxford OX1 3QR,UK

Beijing National Laboratory for Molecular Sciences,CAS Key Laboratory of Molecular Nanostructure and Nanotechnology,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,PR China

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2024

10.1038/s41377-024-01620-0

光:科学与应用(英文版)
中国科学院长春光学精密机械与物理研究所

光:科学与应用(英文版)

CSTPCD
ISSN：2095-5545
年,卷(期)：2024.13(12)