On-Chip Light-Incorporated In Situ Transmission Electron Microscopy of Metal Halide Perovskite Materials

Tianwei Duan; Weizhen Wang; Songhua Cai; Yuanyuan Zhou

doi:10.1021/acsenergylett.3c00750

On-Chip Light-Incorporated In Situ Transmission Electron Microscopy of Metal Halide Perovskite Materials

Tianwei Duan
, Weizhen Wang
, Songhua Cai^*
, Yuanyuan Zhou^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

19 Citations (Scopus)

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Abstract

We report an on-chip light-incorporated in situ transmission electron microscopy (LI²ST) approach for probing metal halide perovskites (MHPs) at the nanoscale, realizing the real-time, site-specific tracking of the light-triggered structure transformation. This in situ platform is based on a specifically designed microelectromechanical systems (MEMS) chip that offers the capability of light illumination with adjustable intensity and tailorable multiwavelength. The excellent operational reliability of the platform allows for the continuous observation of nanoscale regions of interest, recording the morphological and structural evolutions of perovskite grains and grain boundaries. A proof-of-concept demonstration shows a polycrystalline MHP film undergoing decomposition upon continuous light illumination. Counterintuitively, the decomposition starts and expands within the intragrain regions rather than at the grain boundaries. This work demonstrates an unprecedented ability to reveal light-triggered structural-phase variation for illuminating the dynamic behaviors of MHPs with implications for various energy applications. © 2023 The Authors. Published by American Chemical Society.

Original language	English
Pages (from-to)	3048-3053
Journal	ACS Energy Letters
Volume	8
Issue number	7
Online published	20 Jun 2023
DOIs	https://doi.org/10.1021/acsenergylett.3c00750
Publication status	Published - 14 Jul 2023
Externally published	Yes

Funding

Y.Z. acknowledges the Early Career Scheme (No. 22300221), the General Research Fund (No. 12302822) from the Hong Kong Research Grant Council (RGC), and the Excellent Young Scientists Fund (No. 52222318) from the National Natural Science Foundation of China (NSFC). Y.Z. also acknowledges start-up grants, the Initiation Grant - Faculty Niche Research Areas (IG-FNRA) 2020/21 and the Interdisciplinary Research Matching Scheme (IRMS) 2020/21 from Hong Kong Baptist Univeristy. S.C. acknowledges support from start-up grants from the Department of Applied Physics, the Hong Kong Polytechnic University (1-BD96, 1-BDCM), the Hong Kong RGC General Research Fund (Nos. 15306021 and 15306122), the NSFC Young Scientists Fund (No. 12104381), and the open-topic program of State Key Laboratory of Solid State Microstructures at Nanjing University (No. M34001). T.D. acknowledges the support from the Hong Kong RGC Postdoc Fellowship Scheme. Part of this work was performed on the Hong Kong RGC-supported STEM facilities (No. C5029-18E).

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This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

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title = "On-Chip Light-Incorporated In Situ Transmission Electron Microscopy of Metal Halide Perovskite Materials",

abstract = "We report an on-chip light-incorporated in situ transmission electron microscopy (LI2ST) approach for probing metal halide perovskites (MHPs) at the nanoscale, realizing the real-time, site-specific tracking of the light-triggered structure transformation. This in situ platform is based on a specifically designed microelectromechanical systems (MEMS) chip that offers the capability of light illumination with adjustable intensity and tailorable multiwavelength. The excellent operational reliability of the platform allows for the continuous observation of nanoscale regions of interest, recording the morphological and structural evolutions of perovskite grains and grain boundaries. A proof-of-concept demonstration shows a polycrystalline MHP film undergoing decomposition upon continuous light illumination. Counterintuitively, the decomposition starts and expands within the intragrain regions rather than at the grain boundaries. This work demonstrates an unprecedented ability to reveal light-triggered structural-phase variation for illuminating the dynamic behaviors of MHPs with implications for various energy applications. {\textcopyright} 2023 The Authors. Published by American Chemical Society.",

author = "Tianwei Duan and Weizhen Wang and Songhua Cai and Yuanyuan Zhou",

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AU - Duan, Tianwei

AU - Wang, Weizhen

AU - Cai, Songhua

AU - Zhou, Yuanyuan

PY - 2023/7/14

Y1 - 2023/7/14

N2 - We report an on-chip light-incorporated in situ transmission electron microscopy (LI2ST) approach for probing metal halide perovskites (MHPs) at the nanoscale, realizing the real-time, site-specific tracking of the light-triggered structure transformation. This in situ platform is based on a specifically designed microelectromechanical systems (MEMS) chip that offers the capability of light illumination with adjustable intensity and tailorable multiwavelength. The excellent operational reliability of the platform allows for the continuous observation of nanoscale regions of interest, recording the morphological and structural evolutions of perovskite grains and grain boundaries. A proof-of-concept demonstration shows a polycrystalline MHP film undergoing decomposition upon continuous light illumination. Counterintuitively, the decomposition starts and expands within the intragrain regions rather than at the grain boundaries. This work demonstrates an unprecedented ability to reveal light-triggered structural-phase variation for illuminating the dynamic behaviors of MHPs with implications for various energy applications. © 2023 The Authors. Published by American Chemical Society.

AB - We report an on-chip light-incorporated in situ transmission electron microscopy (LI2ST) approach for probing metal halide perovskites (MHPs) at the nanoscale, realizing the real-time, site-specific tracking of the light-triggered structure transformation. This in situ platform is based on a specifically designed microelectromechanical systems (MEMS) chip that offers the capability of light illumination with adjustable intensity and tailorable multiwavelength. The excellent operational reliability of the platform allows for the continuous observation of nanoscale regions of interest, recording the morphological and structural evolutions of perovskite grains and grain boundaries. A proof-of-concept demonstration shows a polycrystalline MHP film undergoing decomposition upon continuous light illumination. Counterintuitively, the decomposition starts and expands within the intragrain regions rather than at the grain boundaries. This work demonstrates an unprecedented ability to reveal light-triggered structural-phase variation for illuminating the dynamic behaviors of MHPs with implications for various energy applications. © 2023 The Authors. Published by American Chemical Society.

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U2 - 10.1021/acsenergylett.3c00750

DO - 10.1021/acsenergylett.3c00750

M3 - RGC 21 - Publication in refereed journal

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JO - ACS Energy Letters

JF - ACS Energy Letters

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ER -

On-Chip Light-Incorporated In Situ Transmission Electron Microscopy of Metal Halide Perovskite Materials

Abstract

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