首页|Oriented Organization of Poly(3-Hexylthiophene)for Efficient and Stable Antimony Sulfide Solar Cells

Oriented Organization of Poly(3-Hexylthiophene)for Efficient and Stable Antimony Sulfide Solar Cells

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Poly(3-hexylthiophene)(P3HT),as a traditional organic hole-transporting material(HTM),is widely used in thin-film solar cells due to its high charge mobility and good thermal stability.However,the P3HT films obtained by the traditional method are amorphous,which is unfavorable to hole extraction and transport.Here,a low-toxicity solvent 1,2,4-trimethylbenzene(TMB)was used as the solvent instead of the commonly used halogen solvent chlorobenzene(CB)to dissolve P3HT.Thus,the self-assembled nanofibrous P3HT film was prepared and applied as HTM in the newly emerged Sb2S3 solar cells.According to the density functional theory calculations,the interface contact between TMB-P3HT and Sb2S3 was enhanced via the bonding interaction of S in P3HT and Sb in Sb2S3.Through transient absorption spectroscopy characterization,the enhanced interface contact improves the charge extraction ability of TMB-P3HT when compared to the CB-P3HT film.Thus,the TMB-P3HT-based Sb2S3 solar cell delivers a power conversion efficiency of 6.21％,which is 9.7％higher than that of the CB-P3HT-based device.Furthermore,the dopant-free TMB-P3HT-based Sb2S3 devices exhibit excellent environmental stability compared with Spiro-OMeTAD-based devices.This work demonstrates that the application of P3HT and the solvent engineering of HTM are applicable strategies for developing Sb2S3 solar cells with high efficiency and stability.

green solventP3HTSb2S3self-assembled nanofibroussolar cell

Jinxiang Gao、Rongfeng Tang、Huiling Cai、Zhiyuan Cai、Peng Xiao、Gang Li、Chenhui Jiang、Changfei Zhu、Tao Chen

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CAS Key Laboratory of Materials for Energy Conversion,Department of Materials Science and Engineering,School of Chemistry and Materials Science,University of Science and Technology of China,Hefei 230041,China

Institute of Energy,Hefei Comprehensive National Science Center,Hefei 230041,China

National Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaInstitute of Energy,Hefei Comprehensive National Science CenterCollaborative Innovation Program of Hefei Science Center,CAS

2019YFA0405600U19A20922200529321KZS212

2023

10.1002/eem2.12453

能源与环境材料(英文)

能源与环境材料(英文)

CSCD
ISSN：
年,卷(期)：2023.6(6)
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