Functionalized 2D/3D Heterojunction with Reversible Iodine-Alkenes Reaction in Perovskite Solar Cells

Hui Yang; Zhengbo Cui; Wen Li; Xuemin Guo; Chunyan Lu; Haobo Yuan; Yuyang Hu; Wenxiao Zhang; Xiaodong Li; Junfeng Fang

doi:10.1002/adfm.202407828

Functionalized 2D/3D Heterojunction with Reversible Iodine-Alkenes Reaction in Perovskite Solar Cells

Hui Yang
, Zhengbo Cui
, Wen Li
, Xuemin Guo
, Chunyan Lu
, Haobo Yuan
, Yuyang Hu
, Wenxiao Zhang
, Xiaodong Li^*
, Junfeng Fang^*

^*Corresponding author for this work

East China Normal University

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

10 Scopus citations

Abstract

Long-term operational stability remains a big challenge for perovskite solar cells (PSCs), especially under ISOS protocol with high temperature. One key reason lies in the iodine loss issue during PSCs aging. Motived by the reversible iodine-alkenes reaction, 3-butenylamine (BEA) based 2D perovskite (BEA)₂[PbBr₄] is used to construct a functionalized 2D/3D heterojunction in PSCs. (BEA)₂[PbBr₄] can chemically adsorb photo-generated iodine species during perovskite degradation through a typical reaction between neutral iodine and terminal alkenes, thus inhibiting iodine loss or diffusion in PSCs. Besides, owing to the reversible reaction nature, these adsorbed iodine species can be partially released slowly under heat conditions, further reacting with and eliminating potential metallic Pb⁰ defects. The resulting PSCs exhibit a high efficiency of 24.5% with good operational stability even without encapsulation, retaining ≈94% of initial efficiency after MPP tracking for 2000 h at 65 °C with ISOS-L-2 protocol.

Original language	English
Article number	2407828
Journal	Advanced Functional Materials
Volume	34
Issue number	46
DOIs	https://doi.org/10.1002/adfm.202407828
State	Published - 12 Nov 2024
Externally published	Yes

Keywords

3-butenylamine
ISOS protocol
heterojunction
inverted perovskite solar cells
iodine loss

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10.1002/adfm.202407828

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@article{d7fedbe1d5484d4da91b791c709ab299,

title = "Functionalized 2D/3D Heterojunction with Reversible Iodine-Alkenes Reaction in Perovskite Solar Cells",

abstract = "Long-term operational stability remains a big challenge for perovskite solar cells (PSCs), especially under ISOS protocol with high temperature. One key reason lies in the iodine loss issue during PSCs aging. Motived by the reversible iodine-alkenes reaction, 3-butenylamine (BEA) based 2D perovskite (BEA)2[PbBr4] is used to construct a functionalized 2D/3D heterojunction in PSCs. (BEA)2[PbBr4] can chemically adsorb photo-generated iodine species during perovskite degradation through a typical reaction between neutral iodine and terminal alkenes, thus inhibiting iodine loss or diffusion in PSCs. Besides, owing to the reversible reaction nature, these adsorbed iodine species can be partially released slowly under heat conditions, further reacting with and eliminating potential metallic Pb0 defects. The resulting PSCs exhibit a high efficiency of 24.5\% with good operational stability even without encapsulation, retaining ≈94\% of initial efficiency after MPP tracking for 2000 h at 65 °C with ISOS-L-2 protocol.",

keywords = "3-butenylamine, ISOS protocol, heterojunction, inverted perovskite solar cells, iodine loss",

author = "Hui Yang and Zhengbo Cui and Wen Li and Xuemin Guo and Chunyan Lu and Haobo Yuan and Yuyang Hu and Wenxiao Zhang and Xiaodong Li and Junfeng Fang",

note = "Publisher Copyright: {\textcopyright} 2024 Wiley-VCH GmbH.",

year = "2024",

month = nov,

day = "12",

doi = "10.1002/adfm.202407828",

language = "英语",

volume = "34",

journal = "Advanced Functional Materials",

issn = "1616-301X",

publisher = "John Wiley and Sons Inc",

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TY - JOUR

T1 - Functionalized 2D/3D Heterojunction with Reversible Iodine-Alkenes Reaction in Perovskite Solar Cells

AU - Yang, Hui

AU - Cui, Zhengbo

AU - Li, Wen

AU - Guo, Xuemin

AU - Lu, Chunyan

AU - Yuan, Haobo

AU - Hu, Yuyang

AU - Zhang, Wenxiao

AU - Li, Xiaodong

AU - Fang, Junfeng

PY - 2024/11/12

Y1 - 2024/11/12

N2 - Long-term operational stability remains a big challenge for perovskite solar cells (PSCs), especially under ISOS protocol with high temperature. One key reason lies in the iodine loss issue during PSCs aging. Motived by the reversible iodine-alkenes reaction, 3-butenylamine (BEA) based 2D perovskite (BEA)2[PbBr4] is used to construct a functionalized 2D/3D heterojunction in PSCs. (BEA)2[PbBr4] can chemically adsorb photo-generated iodine species during perovskite degradation through a typical reaction between neutral iodine and terminal alkenes, thus inhibiting iodine loss or diffusion in PSCs. Besides, owing to the reversible reaction nature, these adsorbed iodine species can be partially released slowly under heat conditions, further reacting with and eliminating potential metallic Pb0 defects. The resulting PSCs exhibit a high efficiency of 24.5% with good operational stability even without encapsulation, retaining ≈94% of initial efficiency after MPP tracking for 2000 h at 65 °C with ISOS-L-2 protocol.

AB - Long-term operational stability remains a big challenge for perovskite solar cells (PSCs), especially under ISOS protocol with high temperature. One key reason lies in the iodine loss issue during PSCs aging. Motived by the reversible iodine-alkenes reaction, 3-butenylamine (BEA) based 2D perovskite (BEA)2[PbBr4] is used to construct a functionalized 2D/3D heterojunction in PSCs. (BEA)2[PbBr4] can chemically adsorb photo-generated iodine species during perovskite degradation through a typical reaction between neutral iodine and terminal alkenes, thus inhibiting iodine loss or diffusion in PSCs. Besides, owing to the reversible reaction nature, these adsorbed iodine species can be partially released slowly under heat conditions, further reacting with and eliminating potential metallic Pb0 defects. The resulting PSCs exhibit a high efficiency of 24.5% with good operational stability even without encapsulation, retaining ≈94% of initial efficiency after MPP tracking for 2000 h at 65 °C with ISOS-L-2 protocol.

KW - 3-butenylamine

KW - ISOS protocol

KW - heterojunction

KW - inverted perovskite solar cells

KW - iodine loss

UR - https://www.scopus.com/pages/publications/85200794032

U2 - 10.1002/adfm.202407828

DO - 10.1002/adfm.202407828

M3 - 文章

AN - SCOPUS:85200794032

SN - 1616-301X

VL - 34

JO - Advanced Functional Materials

JF - Advanced Functional Materials

IS - 46

M1 - 2407828

ER -

Functionalized 2D/3D Heterojunction with Reversible Iodine-Alkenes Reaction in Perovskite Solar Cells

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Keywords

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