Mitigating Iodine Diffusion by a MoO3-Organic Composite Hole Transport Layer for Stable Perovskite Solar Cells

Jisu Hong; Zhaojian Xu; Dominique Lungwitz; Jonathan Scott; Holly M. Johnson; Yun Hi Kim; Antoine Kahn; Barry P. Rand

doi:10.1021/acsenergylett.3c01873

Mitigating Iodine Diffusion by a MoO₃-Organic Composite Hole Transport Layer for Stable Perovskite Solar Cells

Jisu Hong, Zhaojian Xu, Dominique Lungwitz, Jonathan Scott, Holly M. Johnson, Yun Hi Kim, Antoine Kahn, Barry P. Rand

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

8 Scopus citations

Abstract

Halide perovskite solar cells (PSCs) exhibit commercialization potential, but long-term stability still must be addressed. Among various products of perovskite decomposition, iodine species are of considerable concern due to their high vapor pressure and corrosive nature. To address this, a small-molecule hole transport layer (HTL), 4,4′,4″-tris[(3-methylphenyl)phenylamino]triphenylamine (m-MTDATA), is used; mixing it with molybdenum trioxide (MoO₃) p-dopes the layer and slows iodine permeation. We demonstrate that m-MTDATA:MoO₃ HTLs employed in PSCs improve stability under both thermal and voltage bias stress compared to devices with a conventional doped 2,2′,7,7′-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9′-spirobifluorene (spiro-OMeTAD) HTL.

Original language	English (US)
Pages (from-to)	4984-4992
Number of pages	9
Journal	ACS Energy Letters
Volume	8
Issue number	12
DOIs	https://doi.org/10.1021/acsenergylett.3c01873
State	Published - Dec 8 2023

All Science Journal Classification (ASJC) codes

Chemistry (miscellaneous)
Renewable Energy, Sustainability and the Environment
Fuel Technology
Energy Engineering and Power Technology
Materials Chemistry

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10.1021/acsenergylett.3c01873

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title = "Mitigating Iodine Diffusion by a MoO3-Organic Composite Hole Transport Layer for Stable Perovskite Solar Cells",

abstract = "Halide perovskite solar cells (PSCs) exhibit commercialization potential, but long-term stability still must be addressed. Among various products of perovskite decomposition, iodine species are of considerable concern due to their high vapor pressure and corrosive nature. To address this, a small-molecule hole transport layer (HTL), 4,4′,4″-tris[(3-methylphenyl)phenylamino]triphenylamine (m-MTDATA), is used; mixing it with molybdenum trioxide (MoO3) p-dopes the layer and slows iodine permeation. We demonstrate that m-MTDATA:MoO3 HTLs employed in PSCs improve stability under both thermal and voltage bias stress compared to devices with a conventional doped 2,2′,7,7′-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9′-spirobifluorene (spiro-OMeTAD) HTL.",

author = "Jisu Hong and Zhaojian Xu and Dominique Lungwitz and Jonathan Scott and Johnson, {Holly M.} and Kim, {Yun Hi} and Antoine Kahn and Rand, {Barry P.}",

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T1 - Mitigating Iodine Diffusion by a MoO3-Organic Composite Hole Transport Layer for Stable Perovskite Solar Cells

AU - Hong, Jisu

AU - Xu, Zhaojian

AU - Lungwitz, Dominique

AU - Scott, Jonathan

AU - Johnson, Holly M.

AU - Kim, Yun Hi

AU - Kahn, Antoine

AU - Rand, Barry P.

PY - 2023/12/8

Y1 - 2023/12/8

N2 - Halide perovskite solar cells (PSCs) exhibit commercialization potential, but long-term stability still must be addressed. Among various products of perovskite decomposition, iodine species are of considerable concern due to their high vapor pressure and corrosive nature. To address this, a small-molecule hole transport layer (HTL), 4,4′,4″-tris[(3-methylphenyl)phenylamino]triphenylamine (m-MTDATA), is used; mixing it with molybdenum trioxide (MoO3) p-dopes the layer and slows iodine permeation. We demonstrate that m-MTDATA:MoO3 HTLs employed in PSCs improve stability under both thermal and voltage bias stress compared to devices with a conventional doped 2,2′,7,7′-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9′-spirobifluorene (spiro-OMeTAD) HTL.

AB - Halide perovskite solar cells (PSCs) exhibit commercialization potential, but long-term stability still must be addressed. Among various products of perovskite decomposition, iodine species are of considerable concern due to their high vapor pressure and corrosive nature. To address this, a small-molecule hole transport layer (HTL), 4,4′,4″-tris[(3-methylphenyl)phenylamino]triphenylamine (m-MTDATA), is used; mixing it with molybdenum trioxide (MoO3) p-dopes the layer and slows iodine permeation. We demonstrate that m-MTDATA:MoO3 HTLs employed in PSCs improve stability under both thermal and voltage bias stress compared to devices with a conventional doped 2,2′,7,7′-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9′-spirobifluorene (spiro-OMeTAD) HTL.

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Mitigating Iodine Diffusion by a MoO₃-Organic Composite Hole Transport Layer for Stable Perovskite Solar Cells

Abstract

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