Interlayer Molecular Doping to Enhance Efficiency in Tin Perovskite Solar Cells

Hyemi Na; Shabaz Alam; Gayoung Ham; Dohun Baek; Tae Oh Yoon; Gibaek Lee; Meng Qiang Li; Myeongwon Lee; Hyojung Cha; Jaewon Lee; Min Kim

doi:10.1021/acsenergylett.4c01188

Interlayer Molecular Doping to Enhance Efficiency in Tin Perovskite Solar Cells

Hyemi Na, Shabaz Alam, Gayoung Ham, Dohun Baek, Tae Oh Yoon, Gibaek Lee, Meng Qiang Li, Myeongwon Lee, Hyojung Cha, Jaewon Lee, Min Kim

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Abstract

Lead-free tin halide perovskites, which are known for their ecofriendly nature and ideal optical properties, have limitations, such as uncontrollable crystallization, the rapid oxidation of Sn(II), and mismatched energy levels. This study employed molecular doping with functional organic materials in both the top and bottom interfacial layers to enhance the efficiency and stability of Sn-based perovskite solar cells. Molecular doping significantly affects the charge transport efficiency by forming a charge-transfer complex and improves film formation through advantageous wetting properties. These enhancements resulted in a power conversion efficiency of over 10% in tin perovskites and over 21% in lead-tin-mixed perovskites, featuring a universal strategy for advancing perovskite optoelectronics and suggesting their potential for eco-friendly, high-performance photovoltaic devices.

Original language	English
Pages (from-to)	4306-4315
Number of pages	10
Journal	ACS Energy Letters
Volume	9
Issue number	9
DOIs	https://doi.org/10.1021/acsenergylett.4c01188
State	Published - 13 Sep 2024

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10.1021/acsenergylett.4c01188

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title = "Interlayer Molecular Doping to Enhance Efficiency in Tin Perovskite Solar Cells",

abstract = "Lead-free tin halide perovskites, which are known for their ecofriendly nature and ideal optical properties, have limitations, such as uncontrollable crystallization, the rapid oxidation of Sn(II), and mismatched energy levels. This study employed molecular doping with functional organic materials in both the top and bottom interfacial layers to enhance the efficiency and stability of Sn-based perovskite solar cells. Molecular doping significantly affects the charge transport efficiency by forming a charge-transfer complex and improves film formation through advantageous wetting properties. These enhancements resulted in a power conversion efficiency of over 10% in tin perovskites and over 21% in lead-tin-mixed perovskites, featuring a universal strategy for advancing perovskite optoelectronics and suggesting their potential for eco-friendly, high-performance photovoltaic devices.",

author = "Hyemi Na and Shabaz Alam and Gayoung Ham and Dohun Baek and Yoon, {Tae Oh} and Gibaek Lee and Li, {Meng Qiang} and Myeongwon Lee and Hyojung Cha and Jaewon Lee and Min Kim",

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T1 - Interlayer Molecular Doping to Enhance Efficiency in Tin Perovskite Solar Cells

AU - Na, Hyemi

AU - Alam, Shabaz

AU - Ham, Gayoung

AU - Baek, Dohun

AU - Yoon, Tae Oh

AU - Lee, Gibaek

AU - Li, Meng Qiang

AU - Lee, Myeongwon

AU - Cha, Hyojung

AU - Lee, Jaewon

AU - Kim, Min

PY - 2024/9/13

Y1 - 2024/9/13

N2 - Lead-free tin halide perovskites, which are known for their ecofriendly nature and ideal optical properties, have limitations, such as uncontrollable crystallization, the rapid oxidation of Sn(II), and mismatched energy levels. This study employed molecular doping with functional organic materials in both the top and bottom interfacial layers to enhance the efficiency and stability of Sn-based perovskite solar cells. Molecular doping significantly affects the charge transport efficiency by forming a charge-transfer complex and improves film formation through advantageous wetting properties. These enhancements resulted in a power conversion efficiency of over 10% in tin perovskites and over 21% in lead-tin-mixed perovskites, featuring a universal strategy for advancing perovskite optoelectronics and suggesting their potential for eco-friendly, high-performance photovoltaic devices.

AB - Lead-free tin halide perovskites, which are known for their ecofriendly nature and ideal optical properties, have limitations, such as uncontrollable crystallization, the rapid oxidation of Sn(II), and mismatched energy levels. This study employed molecular doping with functional organic materials in both the top and bottom interfacial layers to enhance the efficiency and stability of Sn-based perovskite solar cells. Molecular doping significantly affects the charge transport efficiency by forming a charge-transfer complex and improves film formation through advantageous wetting properties. These enhancements resulted in a power conversion efficiency of over 10% in tin perovskites and over 21% in lead-tin-mixed perovskites, featuring a universal strategy for advancing perovskite optoelectronics and suggesting their potential for eco-friendly, high-performance photovoltaic devices.

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DO - 10.1021/acsenergylett.4c01188

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EP - 4315

JO - ACS Energy Letters

JF - ACS Energy Letters

IS - 9

ER -

Interlayer Molecular Doping to Enhance Efficiency in Tin Perovskite Solar Cells

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