Localized transport channels through nanoscale phase separation for efficient inverted perovskite solar cells

Bo Feng; Wen Li; Zhengbo Cui; Yunfei Li; Qiang Weng; Jianhong Xu; Yunjie Mao; Tengyi You; Ting Shu; Wenxiao Zhang; Xiaodong Li; Junfeng Fang

doi:10.1039/d5tc01209k

Localized transport channels through nanoscale phase separation for efficient inverted perovskite solar cells

Bo Feng, Wen Li, Zhengbo Cui, Yunfei Li, Qiang Weng, Jianhong Xu, Yunjie Mao, Tengyi You, Ting Shu, Wenxiao Zhang, Xiaodong Li, Junfeng Fang

School of Physics and Electronic Science

East China Normal University

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Interfacial recombination at the perovskite/PCBM interface is a critical factor for efficiency loss in inverted perovskite solar cells (PSCs). Different from the commonly used fully covered PCBM transport layer, we developed a localized electron transport channel to reduce the perovskite/PCBM direct contact area by introducing nanoscale separated PM6:PCBM. In this structure, electrons cannot be transported throughout PM6. However, these electrons can effectively circumvent PM6 and be extracted by PCBM due to the bi-continuous and nanoscale phase separation in PM6:PCBM, which will effectively reduce the contact area between perovskite and PCBM, thus inhibiting interfacial recombination. The resulting PSCs exhibited a high efficiency of 25.60% with good stability, retaining 93.1% of the initial efficiency after 65 °C aging for 2000 h.

Original language	English
Pages (from-to)	11608-11613
Number of pages	6
Journal	Journal of Materials Chemistry C
Volume	13
Issue number	23
DOIs	https://doi.org/10.1039/d5tc01209k
State	Published - 3 May 2025

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title = "Localized transport channels through nanoscale phase separation for efficient inverted perovskite solar cells",

abstract = "Interfacial recombination at the perovskite/PCBM interface is a critical factor for efficiency loss in inverted perovskite solar cells (PSCs). Different from the commonly used fully covered PCBM transport layer, we developed a localized electron transport channel to reduce the perovskite/PCBM direct contact area by introducing nanoscale separated PM6:PCBM. In this structure, electrons cannot be transported throughout PM6. However, these electrons can effectively circumvent PM6 and be extracted by PCBM due to the bi-continuous and nanoscale phase separation in PM6:PCBM, which will effectively reduce the contact area between perovskite and PCBM, thus inhibiting interfacial recombination. The resulting PSCs exhibited a high efficiency of 25.60\% with good stability, retaining 93.1\% of the initial efficiency after 65 °C aging for 2000 h.",

author = "Bo Feng and Wen Li and Zhengbo Cui and Yunfei Li and Qiang Weng and Jianhong Xu and Yunjie Mao and Tengyi You and Ting Shu and Wenxiao Zhang and Xiaodong Li and Junfeng Fang",

note = "Publisher Copyright: {\textcopyright} 2025 The Royal Society of Chemistry.",

year = "2025",

month = may,

day = "3",

doi = "10.1039/d5tc01209k",

language = "英语",

volume = "13",

pages = "11608--11613",

journal = "Journal of Materials Chemistry C",

issn = "2050-7526",

publisher = "Royal Society of Chemistry",

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TY - JOUR

T1 - Localized transport channels through nanoscale phase separation for efficient inverted perovskite solar cells

AU - Feng, Bo

AU - Li, Wen

AU - Cui, Zhengbo

AU - Li, Yunfei

AU - Weng, Qiang

AU - Xu, Jianhong

AU - Mao, Yunjie

AU - You, Tengyi

AU - Shu, Ting

AU - Zhang, Wenxiao

AU - Li, Xiaodong

AU - Fang, Junfeng

PY - 2025/5/3

Y1 - 2025/5/3

N2 - Interfacial recombination at the perovskite/PCBM interface is a critical factor for efficiency loss in inverted perovskite solar cells (PSCs). Different from the commonly used fully covered PCBM transport layer, we developed a localized electron transport channel to reduce the perovskite/PCBM direct contact area by introducing nanoscale separated PM6:PCBM. In this structure, electrons cannot be transported throughout PM6. However, these electrons can effectively circumvent PM6 and be extracted by PCBM due to the bi-continuous and nanoscale phase separation in PM6:PCBM, which will effectively reduce the contact area between perovskite and PCBM, thus inhibiting interfacial recombination. The resulting PSCs exhibited a high efficiency of 25.60% with good stability, retaining 93.1% of the initial efficiency after 65 °C aging for 2000 h.

AB - Interfacial recombination at the perovskite/PCBM interface is a critical factor for efficiency loss in inverted perovskite solar cells (PSCs). Different from the commonly used fully covered PCBM transport layer, we developed a localized electron transport channel to reduce the perovskite/PCBM direct contact area by introducing nanoscale separated PM6:PCBM. In this structure, electrons cannot be transported throughout PM6. However, these electrons can effectively circumvent PM6 and be extracted by PCBM due to the bi-continuous and nanoscale phase separation in PM6:PCBM, which will effectively reduce the contact area between perovskite and PCBM, thus inhibiting interfacial recombination. The resulting PSCs exhibited a high efficiency of 25.60% with good stability, retaining 93.1% of the initial efficiency after 65 °C aging for 2000 h.

UR - https://www.scopus.com/pages/publications/105005146518

U2 - 10.1039/d5tc01209k

DO - 10.1039/d5tc01209k

M3 - 文章

AN - SCOPUS:105005146518

SN - 2050-7526

VL - 13

SP - 11608

EP - 11613

JO - Journal of Materials Chemistry C

JF - Journal of Materials Chemistry C

IS - 23

ER -

Localized transport channels through nanoscale phase separation for efficient inverted perovskite solar cells

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