An amino-substituted perylene diimide polymer for conventional perovskite solar cells

Mingyu Zhang; Tengfei Li; Guanhaojie Zheng; Liang Li; Meng Qin; Shiming Zhang; Huanping Zhou; Xiaowei Zhan

doi:10.1039/c7qm00221a

An amino-substituted perylene diimide polymer for conventional perovskite solar cells

Mingyu Zhang, Tengfei Li, Guanhaojie Zheng, Liang Li, Meng Qin, Shiming Zhang, Huanping Zhou, Xiaowei Zhan

SCHOOL OF FLEXIBLE ELECTRONICS(FUTURE TECHNOLOGIES)|INSTITUTE OF ADVANCED MATERIALS(IAM)

Peking University

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

27 Scopus citations

Abstract

We design and synthesize an amino-functionalized conjugated polymer (PPDI-F3N) based on perylene diimide and use it as a multifunctional interfacial layer of TiO₂/perovskite in conventional planar perovskite solar cells. The work function of TiO₂ is modulated by PPDI-F3N to better align with the conduction band of the perovskite, leading to efficient charge extraction. PPDI-F3N can passivate the TiO₂ surface to reduce the severe recombination loss and rapid degradation caused by oxygen vacancies on the UV-sensitive TiO₂ surface. Moreover, modulated polarity of PPDI-F3N is beneficial to optimal perovskite crystallization and morphology. All these features contribute to a higher efficiency (18.3%) of the PSCs with the PPDI-F3N interlayer relative to the control devices without the interlayer (16.7%) as well as improved stability and a reduced hysteresis effect.

Original language	English
Pages (from-to)	2078-2084
Number of pages	7
Journal	Materials Chemistry Frontiers
Volume	1
Issue number	10
DOIs	https://doi.org/10.1039/c7qm00221a
State	Published - Oct 2017

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title = "An amino-substituted perylene diimide polymer for conventional perovskite solar cells",

abstract = "We design and synthesize an amino-functionalized conjugated polymer (PPDI-F3N) based on perylene diimide and use it as a multifunctional interfacial layer of TiO2/perovskite in conventional planar perovskite solar cells. The work function of TiO2 is modulated by PPDI-F3N to better align with the conduction band of the perovskite, leading to efficient charge extraction. PPDI-F3N can passivate the TiO2 surface to reduce the severe recombination loss and rapid degradation caused by oxygen vacancies on the UV-sensitive TiO2 surface. Moreover, modulated polarity of PPDI-F3N is beneficial to optimal perovskite crystallization and morphology. All these features contribute to a higher efficiency (18.3%) of the PSCs with the PPDI-F3N interlayer relative to the control devices without the interlayer (16.7%) as well as improved stability and a reduced hysteresis effect.",

author = "Mingyu Zhang and Tengfei Li and Guanhaojie Zheng and Liang Li and Meng Qin and Shiming Zhang and Huanping Zhou and Xiaowei Zhan",

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doi = "10.1039/c7qm00221a",

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T1 - An amino-substituted perylene diimide polymer for conventional perovskite solar cells

AU - Zhang, Mingyu

AU - Li, Tengfei

AU - Zheng, Guanhaojie

AU - Li, Liang

AU - Qin, Meng

AU - Zhang, Shiming

AU - Zhou, Huanping

AU - Zhan, Xiaowei

PY - 2017/10

Y1 - 2017/10

N2 - We design and synthesize an amino-functionalized conjugated polymer (PPDI-F3N) based on perylene diimide and use it as a multifunctional interfacial layer of TiO2/perovskite in conventional planar perovskite solar cells. The work function of TiO2 is modulated by PPDI-F3N to better align with the conduction band of the perovskite, leading to efficient charge extraction. PPDI-F3N can passivate the TiO2 surface to reduce the severe recombination loss and rapid degradation caused by oxygen vacancies on the UV-sensitive TiO2 surface. Moreover, modulated polarity of PPDI-F3N is beneficial to optimal perovskite crystallization and morphology. All these features contribute to a higher efficiency (18.3%) of the PSCs with the PPDI-F3N interlayer relative to the control devices without the interlayer (16.7%) as well as improved stability and a reduced hysteresis effect.

AB - We design and synthesize an amino-functionalized conjugated polymer (PPDI-F3N) based on perylene diimide and use it as a multifunctional interfacial layer of TiO2/perovskite in conventional planar perovskite solar cells. The work function of TiO2 is modulated by PPDI-F3N to better align with the conduction band of the perovskite, leading to efficient charge extraction. PPDI-F3N can passivate the TiO2 surface to reduce the severe recombination loss and rapid degradation caused by oxygen vacancies on the UV-sensitive TiO2 surface. Moreover, modulated polarity of PPDI-F3N is beneficial to optimal perovskite crystallization and morphology. All these features contribute to a higher efficiency (18.3%) of the PSCs with the PPDI-F3N interlayer relative to the control devices without the interlayer (16.7%) as well as improved stability and a reduced hysteresis effect.

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DO - 10.1039/c7qm00221a

M3 - 文章

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SN - 2052-1537

VL - 1

SP - 2078

EP - 2084

JO - Materials Chemistry Frontiers

JF - Materials Chemistry Frontiers

IS - 10

ER -

An amino-substituted perylene diimide polymer for conventional perovskite solar cells

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