To Reveal Grain Boundary Induced Thermal Instability of Perovskite Semiconductor Thin Films for Photovoltaic Devices

Ruihan Yang; Yafei Wang; Peng Zhang; Detao Liu; Hao Chen; Ting Zhang; Feng Wang; Dandan Yang; Jiang Wu; Zhi David Chen; Shibin Li

doi:10.1109/JPHOTOV.2018.2877022

To Reveal Grain Boundary Induced Thermal Instability of Perovskite Semiconductor Thin Films for Photovoltaic Devices

Ruihan Yang, Yafei Wang, Peng Zhang, Detao Liu, Hao Chen, Ting Zhang, Feng Wang, Dandan Yang, Jiang Wu, Zhi David Chen, Shibin Li

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

9 Scopus citations

Abstract

Thermal instability of hybrid perovskite thin films is one of the important issues that must be overcome on the way to commercialization of perovskite solar cells, and it is also essential to deeply understand the degradation mechanism of perovskite thin films caused by thermal instability. In this paper, we demonstrate that the CH₃NH₃PbI₃ film with larger grain sizes and fewer grain boundaries exhibits a higher thermal stability and the solar cell device exhibits improved photovoltaic performance. The grain size is well controlled by employing isopropanol solvent annealing on CH₃NH₃PbI₃ films, and the highest efficiency of perovskite solar cells increases from 16.87% to 18.56% with the increase in the grain size. The results demonstrate that the reduction of grain boundaries is a feasible strategy to solve the thermal instability issue of perovskite thin films.

Original language	English
Article number	8516359
Pages (from-to)	207-213
Number of pages	7
Journal	IEEE Journal of Photovoltaics
Volume	9
Issue number	1
DOIs	https://doi.org/10.1109/JPHOTOV.2018.2877022
State	Published - Jan 2019

Bibliographical note

Publisher Copyright:
© 2011-2012 IEEE.

Funding

Manuscript received June 15, 2018; revised August 9, 2018; accepted October 15, 2018. Date of publication October 31, 2018; date of current version December 21, 2018. This work was supported in part by the National Natural Science Foundation of China under Grants 61421002, 61874150, 61574029, and 61471085 and in part by the University of Kentucky. (Corresponding authors: Zhi David Chen and Shibin Li.) R. Yang, Y. Wang, P. Zhang, D. Liu, H. Chen, T. Zhang, F. Wang, D. Yang, and S. Li are with the School of Optoelectronic Science and Engineering, State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China (e-mail:, [email protected]; [email protected]; [email protected]; liudetao [email protected]; [email protected]; [email protected]; bolowyf@126. com; [email protected]; [email protected]).

Funders	Funder number
University of Kentucky
National Natural Science Foundation of China (NSFC)	61471085, 61574029, 61874150, 61421002
National Natural Science Foundation of China (NSFC)

Keywords

Dangling bonds
grain boundary
perovskite solar cells
thermal instability

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

UN SDGs

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

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10.1109/JPHOTOV.2018.2877022

Cite this

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title = "To Reveal Grain Boundary Induced Thermal Instability of Perovskite Semiconductor Thin Films for Photovoltaic Devices",

abstract = "Thermal instability of hybrid perovskite thin films is one of the important issues that must be overcome on the way to commercialization of perovskite solar cells, and it is also essential to deeply understand the degradation mechanism of perovskite thin films caused by thermal instability. In this paper, we demonstrate that the CH3NH3PbI3 film with larger grain sizes and fewer grain boundaries exhibits a higher thermal stability and the solar cell device exhibits improved photovoltaic performance. The grain size is well controlled by employing isopropanol solvent annealing on CH3NH3PbI3 films, and the highest efficiency of perovskite solar cells increases from 16.87\% to 18.56\% with the increase in the grain size. The results demonstrate that the reduction of grain boundaries is a feasible strategy to solve the thermal instability issue of perovskite thin films.",

keywords = "Dangling bonds, grain boundary, perovskite solar cells, thermal instability",

author = "Ruihan Yang and Yafei Wang and Peng Zhang and Detao Liu and Hao Chen and Ting Zhang and Feng Wang and Dandan Yang and Jiang Wu and Chen, \{Zhi David\} and Shibin Li",

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doi = "10.1109/JPHOTOV.2018.2877022",

language = "English",

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AU - Yang, Ruihan

AU - Wang, Yafei

AU - Zhang, Peng

AU - Liu, Detao

AU - Chen, Hao

AU - Zhang, Ting

AU - Wang, Feng

AU - Yang, Dandan

AU - Wu, Jiang

AU - Chen, Zhi David

AU - Li, Shibin

PY - 2019/1

Y1 - 2019/1

N2 - Thermal instability of hybrid perovskite thin films is one of the important issues that must be overcome on the way to commercialization of perovskite solar cells, and it is also essential to deeply understand the degradation mechanism of perovskite thin films caused by thermal instability. In this paper, we demonstrate that the CH3NH3PbI3 film with larger grain sizes and fewer grain boundaries exhibits a higher thermal stability and the solar cell device exhibits improved photovoltaic performance. The grain size is well controlled by employing isopropanol solvent annealing on CH3NH3PbI3 films, and the highest efficiency of perovskite solar cells increases from 16.87% to 18.56% with the increase in the grain size. The results demonstrate that the reduction of grain boundaries is a feasible strategy to solve the thermal instability issue of perovskite thin films.

AB - Thermal instability of hybrid perovskite thin films is one of the important issues that must be overcome on the way to commercialization of perovskite solar cells, and it is also essential to deeply understand the degradation mechanism of perovskite thin films caused by thermal instability. In this paper, we demonstrate that the CH3NH3PbI3 film with larger grain sizes and fewer grain boundaries exhibits a higher thermal stability and the solar cell device exhibits improved photovoltaic performance. The grain size is well controlled by employing isopropanol solvent annealing on CH3NH3PbI3 films, and the highest efficiency of perovskite solar cells increases from 16.87% to 18.56% with the increase in the grain size. The results demonstrate that the reduction of grain boundaries is a feasible strategy to solve the thermal instability issue of perovskite thin films.

KW - Dangling bonds

KW - grain boundary

KW - perovskite solar cells

KW - thermal instability

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To Reveal Grain Boundary Induced Thermal Instability of Perovskite Semiconductor Thin Films for Photovoltaic Devices

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

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