Critical role of grain boundaries for ion migration in formamidinium and methylammonium lead halide perovskite solar cells

Jae S. Yun; Jan Seidel; Jincheol Kim; Arman Mahboubi Soufiani; Shujuan Huang; Jonathan Lau; Nam Joong Jeon; Sang Il Seok; Martin A. Green; Anita Ho-Baillie

doi:10.1002/aenm.201600330

Critical role of grain boundaries for ion migration in formamidinium and methylammonium lead halide perovskite solar cells

Jae S. Yun^*, Jan Seidel, Jincheol Kim, Arman Mahboubi Soufiani, Shujuan Huang, Jonathan Lau, Nam Joong Jeon, Sang Il Seok, Martin A. Green, Anita Ho-Baillie

^*Corresponding author for this work

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

391 Citations (Scopus)

Abstract

The critical role of grain boundaries for (CH(NH₂)₂PbI₃)_0.85(CH₃NH₃PbBr₃)_0.15 perovskite solar cells studied by Kelvin probe force microscopy under bias voltage and illumination is reported. Ion migration is enhanced at the grain boundaries. Under illumination, the light‐induced potential causes ion migration leading to a rearranged ion distribution. Such a distribution favors photogenerated charge‐carrier collection at the grain boundaries.

Original language	English
Article number	1600330
Number of pages	8
Journal	Advanced Energy Materials
Volume	6
Issue number	13
DOIs	https://doi.org/10.1002/aenm.201600330
Publication status	Published - 6 Jul 2016
Externally published	Yes

Keywords

ANOMALOUS HYSTERESIS
DIFFUSION
PERFORMANCE
TRANSPORT
IODIDE
POLARIZATION
PASSIVATION
BEHAVIOR
IMPACT

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10.1002/aenm.201600330

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title = "Critical role of grain boundaries for ion migration in formamidinium and methylammonium lead halide perovskite solar cells",

abstract = "The critical role of grain boundaries for (CH(NH2)2PbI3)0.85(CH3NH3PbBr3)0.15 perovskite solar cells studied by Kelvin probe force microscopy under bias voltage and illumination is reported. Ion migration is enhanced at the grain boundaries. Under illumination, the light‐induced potential causes ion migration leading to a rearranged ion distribution. Such a distribution favors photogenerated charge‐carrier collection at the grain boundaries. ",

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AU - Yun, Jae S.

AU - Seidel, Jan

AU - Kim, Jincheol

AU - Soufiani, Arman Mahboubi

AU - Huang, Shujuan

AU - Lau, Jonathan

AU - Jeon, Nam Joong

AU - Seok, Sang Il

AU - Green, Martin A.

AU - Ho-Baillie, Anita

PY - 2016/7/6

Y1 - 2016/7/6

N2 - The critical role of grain boundaries for (CH(NH2)2PbI3)0.85(CH3NH3PbBr3)0.15 perovskite solar cells studied by Kelvin probe force microscopy under bias voltage and illumination is reported. Ion migration is enhanced at the grain boundaries. Under illumination, the light‐induced potential causes ion migration leading to a rearranged ion distribution. Such a distribution favors photogenerated charge‐carrier collection at the grain boundaries.

AB - The critical role of grain boundaries for (CH(NH2)2PbI3)0.85(CH3NH3PbBr3)0.15 perovskite solar cells studied by Kelvin probe force microscopy under bias voltage and illumination is reported. Ion migration is enhanced at the grain boundaries. Under illumination, the light‐induced potential causes ion migration leading to a rearranged ion distribution. Such a distribution favors photogenerated charge‐carrier collection at the grain boundaries.

KW - ANOMALOUS HYSTERESIS

KW - DIFFUSION

KW - PERFORMANCE

KW - TRANSPORT

KW - IODIDE

KW - POLARIZATION

KW - PASSIVATION

KW - BEHAVIOR

KW - IMPACT

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DO - 10.1002/aenm.201600330

M3 - Article

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VL - 6

JO - Advanced Energy Materials

JF - Advanced Energy Materials

IS - 13

M1 - 1600330

ER -

Critical role of grain boundaries for ion migration in formamidinium and methylammonium lead halide perovskite solar cells

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Keywords

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