Carbazole-Based Hole Transport Polymer for Methylammonium-Free Tin-Lead Perovskite Solar Cells with Enhanced Efficiency and Stability

Jiantao Wang; Zhenhua Yu; Daniel Astridge; Zhenyi Ni; Liang Zhao; Bo Chen; Mengru Wang; Ying Zhou; Guang Yang; Xuezeng Dai; Alan Sellinger; Jinsong Huang

doi:10.1021/acsenergylett.2c01578

Carbazole-Based Hole Transport Polymer for Methylammonium-Free Tin-Lead Perovskite Solar Cells with Enhanced Efficiency and Stability

Jiantao Wang, Zhenhua Yu, Daniel Astridge, Zhenyi Ni, Liang Zhao, Bo Chen, Mengru Wang, Ying Zhou, Guang Yang, Xuezeng Dai, Alan Sellinger, Jinsong Huang

Chemistry and Nanoscience

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

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Abstract

As the most commonly used hole transport material (HTM) in tin-lead (Sn-Pb) perovskite solar cells (PSCs), poly(3,4-ethylenedioxythiophene) polystyrenesulfonate (PEDOT:PSS) limits the power conversion efficiency (PCE) and stability of the PSCs due to its acidic characteristics. Herein, an easily synthesized polymer HTM poly[(phenyl)imino[9-(2-ethylhexyl)carbazole]-2,7-diyl] (CzAn) with a shallow highest occupied molecular orbital (HOMO) level of -4.95 eV is used in a p-i-n structure, methylammonium-free, Sn-Pb PSC to replace PEDOT:PSS. Upon optimization using doping and surface engineering, high quality Sn-Pb PSCs could be successfully fabricated, boosting the PCE to 22.6% (stabilized PCE of 21.3%) compared with 21.2% for PEDOT:PSS. The perovskite films prepared on the modified CzAn HTM possess improved crystallinity, reduced trap-state density, and larger carrier mobility resulting in PSCs with greatly improved stability.

Original language	American English
Pages (from-to)	3353-3361
Number of pages	9
Journal	ACS Energy Letters
Volume	7
Issue number	10
DOIs	https://doi.org/10.1021/acsenergylett.2c01578
State	Published - 2022

NREL Publication Number

NREL/JA-5900-84532

Keywords

carrier mobility
crystallinity
hole transport material
perovskite solar cells
power conversion efficiency
stability
trap-state density

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10.1021/acsenergylett.2c01578

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@article{6e916e6f34a140b29a75ce4929e39064,

title = "Carbazole-Based Hole Transport Polymer for Methylammonium-Free Tin-Lead Perovskite Solar Cells with Enhanced Efficiency and Stability",

abstract = "As the most commonly used hole transport material (HTM) in tin-lead (Sn-Pb) perovskite solar cells (PSCs), poly(3,4-ethylenedioxythiophene) polystyrenesulfonate (PEDOT:PSS) limits the power conversion efficiency (PCE) and stability of the PSCs due to its acidic characteristics. Herein, an easily synthesized polymer HTM poly[(phenyl)imino[9-(2-ethylhexyl)carbazole]-2,7-diyl] (CzAn) with a shallow highest occupied molecular orbital (HOMO) level of -4.95 eV is used in a p-i-n structure, methylammonium-free, Sn-Pb PSC to replace PEDOT:PSS. Upon optimization using doping and surface engineering, high quality Sn-Pb PSCs could be successfully fabricated, boosting the PCE to 22.6% (stabilized PCE of 21.3%) compared with 21.2% for PEDOT:PSS. The perovskite films prepared on the modified CzAn HTM possess improved crystallinity, reduced trap-state density, and larger carrier mobility resulting in PSCs with greatly improved stability.",

keywords = "carrier mobility, crystallinity, hole transport material, perovskite solar cells, power conversion efficiency, stability, trap-state density",

author = "Jiantao Wang and Zhenhua Yu and Daniel Astridge and Zhenyi Ni and Liang Zhao and Bo Chen and Mengru Wang and Ying Zhou and Guang Yang and Xuezeng Dai and Alan Sellinger and Jinsong Huang",

year = "2022",

doi = "10.1021/acsenergylett.2c01578",

language = "American English",

volume = "7",

pages = "3353--3361",

journal = "ACS Energy Letters",

issn = "2380-8195",

publisher = "American Chemical Society",

number = "10",

}

TY - JOUR

T1 - Carbazole-Based Hole Transport Polymer for Methylammonium-Free Tin-Lead Perovskite Solar Cells with Enhanced Efficiency and Stability

AU - Wang, Jiantao

AU - Yu, Zhenhua

AU - Astridge, Daniel

AU - Ni, Zhenyi

AU - Zhao, Liang

AU - Chen, Bo

AU - Wang, Mengru

AU - Zhou, Ying

AU - Yang, Guang

AU - Dai, Xuezeng

AU - Sellinger, Alan

AU - Huang, Jinsong

PY - 2022

Y1 - 2022

N2 - As the most commonly used hole transport material (HTM) in tin-lead (Sn-Pb) perovskite solar cells (PSCs), poly(3,4-ethylenedioxythiophene) polystyrenesulfonate (PEDOT:PSS) limits the power conversion efficiency (PCE) and stability of the PSCs due to its acidic characteristics. Herein, an easily synthesized polymer HTM poly[(phenyl)imino[9-(2-ethylhexyl)carbazole]-2,7-diyl] (CzAn) with a shallow highest occupied molecular orbital (HOMO) level of -4.95 eV is used in a p-i-n structure, methylammonium-free, Sn-Pb PSC to replace PEDOT:PSS. Upon optimization using doping and surface engineering, high quality Sn-Pb PSCs could be successfully fabricated, boosting the PCE to 22.6% (stabilized PCE of 21.3%) compared with 21.2% for PEDOT:PSS. The perovskite films prepared on the modified CzAn HTM possess improved crystallinity, reduced trap-state density, and larger carrier mobility resulting in PSCs with greatly improved stability.

AB - As the most commonly used hole transport material (HTM) in tin-lead (Sn-Pb) perovskite solar cells (PSCs), poly(3,4-ethylenedioxythiophene) polystyrenesulfonate (PEDOT:PSS) limits the power conversion efficiency (PCE) and stability of the PSCs due to its acidic characteristics. Herein, an easily synthesized polymer HTM poly[(phenyl)imino[9-(2-ethylhexyl)carbazole]-2,7-diyl] (CzAn) with a shallow highest occupied molecular orbital (HOMO) level of -4.95 eV is used in a p-i-n structure, methylammonium-free, Sn-Pb PSC to replace PEDOT:PSS. Upon optimization using doping and surface engineering, high quality Sn-Pb PSCs could be successfully fabricated, boosting the PCE to 22.6% (stabilized PCE of 21.3%) compared with 21.2% for PEDOT:PSS. The perovskite films prepared on the modified CzAn HTM possess improved crystallinity, reduced trap-state density, and larger carrier mobility resulting in PSCs with greatly improved stability.

KW - carrier mobility

KW - crystallinity

KW - hole transport material

KW - perovskite solar cells

KW - power conversion efficiency

KW - stability

KW - trap-state density

U2 - 10.1021/acsenergylett.2c01578

DO - 10.1021/acsenergylett.2c01578

M3 - Article

SN - 2380-8195

VL - 7

SP - 3353

EP - 3361

JO - ACS Energy Letters

JF - ACS Energy Letters

IS - 10

ER -

Carbazole-Based Hole Transport Polymer for Methylammonium-Free Tin-Lead Perovskite Solar Cells with Enhanced Efficiency and Stability

Abstract

NREL Publication Number

Keywords

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