Suppressed Ion Migration in Reduced-Dimensional Perovskites Improves Operating Stability

Ziru Huang; Andrew H. Proppe; Hairen Tan; Makhsud I. Saidaminov; Furui Tan; Anyi Mei; Chih Shan Tan; Mingyang Wei; Yi Hou; Hongwei Han; Shana O. Kelley; Edward H. Sargent

doi:10.1021/acsenergylett.9b00892

Suppressed Ion Migration in Reduced-Dimensional Perovskites Improves Operating Stability

Ziru Huang, Andrew H. Proppe, Hairen Tan, Makhsud I. Saidaminov, Furui Tan, Anyi Mei, Chih Shan Tan, Mingyang Wei, Yi Hou, Hongwei Han, Shana O. Kelley, Edward H. Sargent^*

^*Corresponding author for this work

Chemistry

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

100 Scopus citations

Abstract

Impressive progress in halide perovskite solar cells motivates further work to improve operating stability. It is known that ion-migration-driven decomposition represents a degradation pathway in perovskite solar cells and that it can occur within the perovskite material even in well-encapsulated devices. Here we find that quasi-two-dimensional (2.5D) perovskites suppress this ion-migration-induced degradation. Using TOF-SIMS, we confirm that iodide migration occurs in bulk perovskite photovoltaic devices operating at their maximum power point (MPP). We observe that iodine ions migrate across the spiro-OMeTAD layer to the spiro/gold contact interface, oxidizing and deteriorating the gold at the interface. In contrast, we find that large n»2.5D perovskites exhibit a significantly reduced rate of ion migration compared to 3D devices and exhibit less than 1% relative PCE loss in over 80 h of continuous operation at MPP, whereas the PCE of 3D devices diminishes by more than 50% within the first 24 h.

Original language	English (US)
Pages (from-to)	1521-1527
Number of pages	7
Journal	ACS Energy Letters
Volume	4
Issue number	7
DOIs	https://doi.org/10.1021/acsenergylett.9b00892
State	Published - Jun 10 2019

ASJC Scopus subject areas

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

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1021/acsenergylett.9b00892

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title = "Suppressed Ion Migration in Reduced-Dimensional Perovskites Improves Operating Stability",

abstract = "Impressive progress in halide perovskite solar cells motivates further work to improve operating stability. It is known that ion-migration-driven decomposition represents a degradation pathway in perovskite solar cells and that it can occur within the perovskite material even in well-encapsulated devices. Here we find that quasi-two-dimensional (2.5D) perovskites suppress this ion-migration-induced degradation. Using TOF-SIMS, we confirm that iodide migration occurs in bulk perovskite photovoltaic devices operating at their maximum power point (MPP). We observe that iodine ions migrate across the spiro-OMeTAD layer to the spiro/gold contact interface, oxidizing and deteriorating the gold at the interface. In contrast, we find that large n»2.5D perovskites exhibit a significantly reduced rate of ion migration compared to 3D devices and exhibit less than 1% relative PCE loss in over 80 h of continuous operation at MPP, whereas the PCE of 3D devices diminishes by more than 50% within the first 24 h.",

author = "Ziru Huang and Proppe, {Andrew H.} and Hairen Tan and Saidaminov, {Makhsud I.} and Furui Tan and Anyi Mei and Tan, {Chih Shan} and Mingyang Wei and Yi Hou and Hongwei Han and Kelley, {Shana O.} and Sargent, {Edward H.}",

note = "Funding Information: This publication is based on work supported by the U.S. Department of the Navy, Office of Naval Research (Grant Award No.: N00014-17-1-2524). M.I.S. acknowledges the support of the Banting Postdoctoral Fellowship Program, administered by the Government of Canada. A.H.P. acknowledges support from the NSERC Alexander Graham Bell Scholarship program. The authors thank Dr. P. M. Brodersen in the Ontario Centre for Characterization of Advanced Materials (OCCAM) for assistance with materials characterization using TOF-SIMS and XPS. Publisher Copyright: {\textcopyright} 2019 American Chemical Society.",

year = "2019",

month = jun,

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doi = "10.1021/acsenergylett.9b00892",

language = "English (US)",

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T1 - Suppressed Ion Migration in Reduced-Dimensional Perovskites Improves Operating Stability

AU - Huang, Ziru

AU - Proppe, Andrew H.

AU - Tan, Hairen

AU - Saidaminov, Makhsud I.

AU - Tan, Furui

AU - Mei, Anyi

AU - Tan, Chih Shan

AU - Wei, Mingyang

AU - Hou, Yi

AU - Han, Hongwei

AU - Kelley, Shana O.

AU - Sargent, Edward H.

N1 - Funding Information: This publication is based on work supported by the U.S. Department of the Navy, Office of Naval Research (Grant Award No.: N00014-17-1-2524). M.I.S. acknowledges the support of the Banting Postdoctoral Fellowship Program, administered by the Government of Canada. A.H.P. acknowledges support from the NSERC Alexander Graham Bell Scholarship program. The authors thank Dr. P. M. Brodersen in the Ontario Centre for Characterization of Advanced Materials (OCCAM) for assistance with materials characterization using TOF-SIMS and XPS. Publisher Copyright: © 2019 American Chemical Society.

PY - 2019/6/10

Y1 - 2019/6/10

N2 - Impressive progress in halide perovskite solar cells motivates further work to improve operating stability. It is known that ion-migration-driven decomposition represents a degradation pathway in perovskite solar cells and that it can occur within the perovskite material even in well-encapsulated devices. Here we find that quasi-two-dimensional (2.5D) perovskites suppress this ion-migration-induced degradation. Using TOF-SIMS, we confirm that iodide migration occurs in bulk perovskite photovoltaic devices operating at their maximum power point (MPP). We observe that iodine ions migrate across the spiro-OMeTAD layer to the spiro/gold contact interface, oxidizing and deteriorating the gold at the interface. In contrast, we find that large n»2.5D perovskites exhibit a significantly reduced rate of ion migration compared to 3D devices and exhibit less than 1% relative PCE loss in over 80 h of continuous operation at MPP, whereas the PCE of 3D devices diminishes by more than 50% within the first 24 h.

AB - Impressive progress in halide perovskite solar cells motivates further work to improve operating stability. It is known that ion-migration-driven decomposition represents a degradation pathway in perovskite solar cells and that it can occur within the perovskite material even in well-encapsulated devices. Here we find that quasi-two-dimensional (2.5D) perovskites suppress this ion-migration-induced degradation. Using TOF-SIMS, we confirm that iodide migration occurs in bulk perovskite photovoltaic devices operating at their maximum power point (MPP). We observe that iodine ions migrate across the spiro-OMeTAD layer to the spiro/gold contact interface, oxidizing and deteriorating the gold at the interface. In contrast, we find that large n»2.5D perovskites exhibit a significantly reduced rate of ion migration compared to 3D devices and exhibit less than 1% relative PCE loss in over 80 h of continuous operation at MPP, whereas the PCE of 3D devices diminishes by more than 50% within the first 24 h.

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JF - ACS Energy Letters

SN - 2380-8195

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Suppressed Ion Migration in Reduced-Dimensional Perovskites Improves Operating Stability

Abstract

ASJC Scopus subject areas

UN SDGs

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