High Stability Bilayered Perovskites through Crystallization Driven Self-Assembly

Teck Ming Koh; Junye Huang; Ishita Neogi; Pablo P. Boix; Subodh G. Mhaisalkar; Nripan Mathews

doi:10.1021/acsami.7b07780

High Stability Bilayered Perovskites through Crystallization Driven Self-Assembly

Teck Ming Koh, Junye Huang, Ishita Neogi, Pablo P. Boix, Subodh G. Mhaisalkar^*, Nripan Mathews

^*Corresponding author for this work

Nanyang Technological University

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

22 Citations (Scopus)

Abstract

In this manuscript we reveal the formation of bilayered hybrid perovskites of a new lower dimensional perovskite family, (CHMA)₂(MA)_n-1Pb_nI₃ with n = 1-5, with high ambient stability via its crystallization driven self-assembly process. The spun-coated perovskite solution tends to crystallize and undergo phase separation during annealing, resulting in the formation of 2D/3D bilayered hybrid perovskites. Remarkably, this 2D/3D hybrid perovskites possess striking moisture resistance and displays high ambient stability up to 65 days. The bilayered approach in combining 3D and 2D perovskites could lead to a new era of perovskite research for high-efficiency photovoltaics with outstanding stability, with the 3D perovskite providing excellent electronic properties while the 2D perovskite endows it moisture stability.

Original language	English
Pages (from-to)	28743-28749
Number of pages	7
Journal	ACS Applied Materials and Interfaces
Volume	9
Issue number	34
DOIs	https://doi.org/10.1021/acsami.7b07780
Publication status	Published - Aug 30 2017
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2017 American Chemical Society.

ASJC Scopus Subject Areas

General Materials Science

Keywords

air stability
bilayered perovskite
mixed-dimensionality
phase separation
self-assembly

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10.1021/acsami.7b07780

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title = "High Stability Bilayered Perovskites through Crystallization Driven Self-Assembly",

abstract = "In this manuscript we reveal the formation of bilayered hybrid perovskites of a new lower dimensional perovskite family, (CHMA)2(MA)n-1PbnI3 with n = 1-5, with high ambient stability via its crystallization driven self-assembly process. The spun-coated perovskite solution tends to crystallize and undergo phase separation during annealing, resulting in the formation of 2D/3D bilayered hybrid perovskites. Remarkably, this 2D/3D hybrid perovskites possess striking moisture resistance and displays high ambient stability up to 65 days. The bilayered approach in combining 3D and 2D perovskites could lead to a new era of perovskite research for high-efficiency photovoltaics with outstanding stability, with the 3D perovskite providing excellent electronic properties while the 2D perovskite endows it moisture stability.",

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author = "Koh, {Teck Ming} and Junye Huang and Ishita Neogi and Boix, {Pablo P.} and Mhaisalkar, {Subodh G.} and Nripan Mathews",

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AU - Koh, Teck Ming

AU - Huang, Junye

AU - Neogi, Ishita

AU - Boix, Pablo P.

AU - Mhaisalkar, Subodh G.

AU - Mathews, Nripan

PY - 2017/8/30

Y1 - 2017/8/30

N2 - In this manuscript we reveal the formation of bilayered hybrid perovskites of a new lower dimensional perovskite family, (CHMA)2(MA)n-1PbnI3 with n = 1-5, with high ambient stability via its crystallization driven self-assembly process. The spun-coated perovskite solution tends to crystallize and undergo phase separation during annealing, resulting in the formation of 2D/3D bilayered hybrid perovskites. Remarkably, this 2D/3D hybrid perovskites possess striking moisture resistance and displays high ambient stability up to 65 days. The bilayered approach in combining 3D and 2D perovskites could lead to a new era of perovskite research for high-efficiency photovoltaics with outstanding stability, with the 3D perovskite providing excellent electronic properties while the 2D perovskite endows it moisture stability.

AB - In this manuscript we reveal the formation of bilayered hybrid perovskites of a new lower dimensional perovskite family, (CHMA)2(MA)n-1PbnI3 with n = 1-5, with high ambient stability via its crystallization driven self-assembly process. The spun-coated perovskite solution tends to crystallize and undergo phase separation during annealing, resulting in the formation of 2D/3D bilayered hybrid perovskites. Remarkably, this 2D/3D hybrid perovskites possess striking moisture resistance and displays high ambient stability up to 65 days. The bilayered approach in combining 3D and 2D perovskites could lead to a new era of perovskite research for high-efficiency photovoltaics with outstanding stability, with the 3D perovskite providing excellent electronic properties while the 2D perovskite endows it moisture stability.

KW - air stability

KW - bilayered perovskite

KW - mixed-dimensionality

KW - phase separation

KW - self-assembly

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ER -

High Stability Bilayered Perovskites through Crystallization Driven Self-Assembly

Abstract

Bibliographical note

ASJC Scopus Subject Areas

Keywords

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