Additive engineering for Sb_(2)S_(3) indoor photovoltaics with efficiency exceeding 17%  

作　　者：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 

机构地区：[1]School of Electrical Engineering and Automation,Hefei University of Technology,Hefei 230009,PR China [2]Department of Environmental Science and Engineering,Key Laboratory of Urban Pollutant Conversion,University of Science and Technology of China,Hefei 230009,PR China [3]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 [4]Department of Chemistry,Inorganic Chemistry Laboratory,University of Oxford,South Parks Road,Oxford OX13QR,UK [5]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

出　　处：《Light(Science & Applications)》2024年第12期3015-3029,共15页光(科学与应用)(英文版)

基　　金：support by the National Natural Science Foundation of China(nos.52371219 and U19A2089);the Fundamental Research Funds for the Central Universities(no.JZ2024HGTG0295);the National Natural Science Foundation of Hefei City(no.2022024)is greatly acknowledged.Y.F.,J.Y.,and R.L.Z.H.acknowledge funding from a UKRI Frontier Grant(no.EP/X022900//1);funding from the Engineering and Physical Sciences Research Council(grant no.EP/V014498/2);the Royal Academy of Engineering for support through the research fellowships scheme(no.RF/201718/17101).

摘　　要：Indoor photovoltaics(IPVs)have attracted increasing attention for sustainably powering Internet of Things(IoT)electronics.Sb_(2)S_(3)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 Sb_(2)S_(3)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 Sb_(2)S_(3)films to be controlled,enabling the deposition of highquality Sb_(2)S_(3)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 Sb_(2)S_(3)films.Due to suppressed carrier recombination and improved charge-carrier transport in Sb_(2)S_(3)absorber films,the MEA-modulated Sb_(2)S_(3)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 Sb_(2)S_(3)IPVs.Furthermore,we construct high performance large-area Sb_(2)S_(3)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 Sb_(2)S_(3)photovoltaics for indoor energy harvesting.

关 键 词：ABSORBER ILLUMINATION ADDITIVE 

分 类 号：TM914.4[电气工程—电力电子与电力传动]