Sb2S3-based bulk/nano planar heterojunction film solar cells with graphene/polymer composite layer as hole extracting interface

•PM6/graphene composite film is an effective hole transporting interface layer.•Graphene content imposes a remarkable effect on hole mobility and device performance.•Solar cells with PM6/graphene display a good long-term stability in N2 atmosphere. Sb2S3-based bulk/nano planar heterojunction (BnPHJ)...

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Bibliographic Details
Published in:Materials letters 2021-10, Vol.300, p.130190, Article 130190
Main Authors: Chen, Junwei, Liu, Rong, Zhu, Liangxin, Chen, Wangwei, Dong, Chao, Wan, Zhiyang, Cao, Wenbo, Zhang, Xueqiang, Peng, Ruixiang, Wang, Mingtai
Format: Article
Language:English
Subjects:
Antimony trisulfide
Charge transport
Energy conversion efficiency
Graphene
Heterojunctions
Hole mobility
Inorganic heterojunction
Materials science
Morphology
Photoelectricity
Photovoltaic cells
Polymer films
Polymer matrix composites
Polymers
Solar cells
Solar energy materials
Thin films
Titanium dioxide
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Summary:•PM6/graphene composite film is an effective hole transporting interface layer.•Graphene content imposes a remarkable effect on hole mobility and device performance.•Solar cells with PM6/graphene display a good long-term stability in N2 atmosphere. Sb2S3-based bulk/nano planar heterojunction (BnPHJ) films are promising photoelectric conversion materials for photovoltaics. Here, a solution-processing polymer/graphene composite film is employed as hole transporting layer in Sb2S3/TiO2-BnPHJ solar cells for the first time. The morphology and hole mobility of the composite film is investigated by SEM, AFM, SCLC techniques, and IMVS and EIS are applied to study the charge transport and recombination mechanism in the solar cells. The Sb2S3/TiO2-BnPHJ solar cells delivers a power conversion efficiency of 5.72% and a good stability.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2021.130190