Two-step processed efficient perovskite solar cells via improving perovskite/PTAA interface using solvent engineering in PbI2 precursor

doi:10.1088/1674-1056/ab7744

中国物理B ›› 2020, Vol. 29 ›› Issue (4): 48801-048801.doi: 10.1088/1674-1056/ab7744

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇下一篇

Two-step processed efficient perovskite solar cells via improving perovskite/PTAA interface using solvent engineering in PbI₂ precursor

Cao-Yu Long(龙操玉), Ning Wang(王宁), Ke-Qing Huang(黄可卿), Heng-Yue Li(李恒月), Biao Liu(刘标), Jun-Liang Yang(阳军亮)

Hunan Key Laboratory for Super-microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, China

收稿日期:2020-01-10 修回日期:2020-01-23 出版日期:2020-04-05 发布日期:2020-04-05
通讯作者: Jun-Liang Yang E-mail:junliang.yang@csu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 51673214) and the National Key Research and Development Program of China (Grant No. 2017YFA0206600).

Two-step processed efficient perovskite solar cells via improving perovskite/PTAA interface using solvent engineering in PbI₂ precursor

Cao-Yu Long(龙操玉), Ning Wang(王宁), Ke-Qing Huang(黄可卿), Heng-Yue Li(李恒月), Biao Liu(刘标), Jun-Liang Yang(阳军亮)

Hunan Key Laboratory for Super-microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, China

Received:2020-01-10 Revised:2020-01-23 Online:2020-04-05 Published:2020-04-05
Contact: Jun-Liang Yang E-mail:junliang.yang@csu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 51673214) and the National Key Research and Development Program of China (Grant No. 2017YFA0206600).

摘要/Abstract

摘要： The morphology and interface of perovskite film are very important for the performance of perovskite solar cells (PSCs). The quality of perovskite film, fabricated via two-step spin-coating process, is significantly influenced by the morphology and crystallinity of PbI₂ film. With the addition of additive dimethyl sulfoxide (DMSO) into the PbI₂ precursor, the roughness and trap-state density of perovskite film have been significantly reduced, leading to the excellent contact between perovskite layer and subsequent deposited carrier transport layer. Accordingly, the planar heterojunction PSCs with an architecture of ITO/SnO₂/perovskite/PTAA/Ag show an efficiency up to 19.02%. Furthermore, PSCs exhibit promising stability in air with a humidity of ～ 45%, and retain 80% of initial efficiency after being exposed to air for 400 h without any encapsulation.

关键词: perovskite solar cells, planar heterojunction, interface, PbI₂-DMSO complex

Abstract: The morphology and interface of perovskite film are very important for the performance of perovskite solar cells (PSCs). The quality of perovskite film, fabricated via two-step spin-coating process, is significantly influenced by the morphology and crystallinity of PbI₂ film. With the addition of additive dimethyl sulfoxide (DMSO) into the PbI₂ precursor, the roughness and trap-state density of perovskite film have been significantly reduced, leading to the excellent contact between perovskite layer and subsequent deposited carrier transport layer. Accordingly, the planar heterojunction PSCs with an architecture of ITO/SnO₂/perovskite/PTAA/Ag show an efficiency up to 19.02%. Furthermore, PSCs exhibit promising stability in air with a humidity of ～ 45%, and retain 80% of initial efficiency after being exposed to air for 400 h without any encapsulation.

Key words: perovskite solar cells, planar heterojunction, interface, PbI₂-DMSO complex

中图分类号: (Solar cells (photovoltaics))

88.40.H-

88.40.hj (Efficiency and performance of solar cells) 88.40.ff (Performance testing)

龙操玉, 王宁, 黄可卿, 李恒月, 刘标, 阳军亮. Two-step processed efficient perovskite solar cells via improving perovskite/PTAA interface using solvent engineering in PbI₂ precursor[J]. 中国物理B, 2020, 29(4): 48801-048801.

Cao-Yu Long(龙操玉), Ning Wang(王宁), Ke-Qing Huang(黄可卿), Heng-Yue Li(李恒月), Biao Liu(刘标), Jun-Liang Yang(阳军亮). Two-step processed efficient perovskite solar cells via improving perovskite/PTAA interface using solvent engineering in PbI₂ precursor[J]. Chin. Phys. B, 2020, 29(4): 48801-048801.

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Two-step processed efficient perovskite solar cells via improving perovskite/PTAA interface using solvent engineering in PbI₂ precursor

Two-step processed efficient perovskite solar cells via improving perovskite/PTAA interface using solvent engineering in PbI₂ precursor

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