Improved performance of planar perovskite solar cells via ethanol-vapor annealing treatment

J. Wu; J. J. Dong; H. Y. Hao; J. Xing; H. Liu

Improved performance of planar perovskite solar cells via ethanol-vapor annealing treatment

J. Wu, J. J. Dong, H. Y. Hao, J. Xing, H. Liu

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

Abstract

In this paper, ethanol-vapor annealing treatment on perovskite thin films is reported, aiming to increase grain size, reduce defect states and improve crystallinity of the perovskite films, thus improving the performance of the planar perovskite solar cells (PSCs). Here, we show a two-step annealing method, ethanol-vapor annealing followed by normal heat treatment in Ar atmosphere, to prepare pinhole-free perovskite films with large grain size and few defects. The planar PSCs containing perovskite films prepared by this two-step annealing, exhibit much higher power conversion efficiency, which has been improved from 9.62% to 12.00%. Thus, our method provides a facile and simple way to improve the device performance of PSCs.

Original language	English
Pages (from-to)	202-208
Number of pages	7
Journal	Optoelectronics and Advanced Materials, Rapid Communications
Volume	13
Issue number	3-4
State	Published - Mar 1 2019
Externally published	Yes

Funding

This work was financially supported by “the National Natural Science Foundation of China” (Grand No. 11404293), “the Fundamental Research Funds for the Central Universities” (Grand No. 2652017149 and 2652015189).

Funders	Funder number
National Natural Science Foundation of China	11404293
Fundamental Research Funds for the Central Universities	2652017149, 2652015189

Keywords

Crystallinity
Ethanol-vapor annealing
Perovskite
Solar cells

UN SDGs

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

Cite this

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AU - Wu, J.

AU - Dong, J. J.

AU - Hao, H. Y.

AU - Xing, J.

AU - Liu, H.

PY - 2019/3/1

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N2 - In this paper, ethanol-vapor annealing treatment on perovskite thin films is reported, aiming to increase grain size, reduce defect states and improve crystallinity of the perovskite films, thus improving the performance of the planar perovskite solar cells (PSCs). Here, we show a two-step annealing method, ethanol-vapor annealing followed by normal heat treatment in Ar atmosphere, to prepare pinhole-free perovskite films with large grain size and few defects. The planar PSCs containing perovskite films prepared by this two-step annealing, exhibit much higher power conversion efficiency, which has been improved from 9.62% to 12.00%. Thus, our method provides a facile and simple way to improve the device performance of PSCs.

AB - In this paper, ethanol-vapor annealing treatment on perovskite thin films is reported, aiming to increase grain size, reduce defect states and improve crystallinity of the perovskite films, thus improving the performance of the planar perovskite solar cells (PSCs). Here, we show a two-step annealing method, ethanol-vapor annealing followed by normal heat treatment in Ar atmosphere, to prepare pinhole-free perovskite films with large grain size and few defects. The planar PSCs containing perovskite films prepared by this two-step annealing, exhibit much higher power conversion efficiency, which has been improved from 9.62% to 12.00%. Thus, our method provides a facile and simple way to improve the device performance of PSCs.

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KW - Ethanol-vapor annealing

KW - Perovskite

KW - Solar cells

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Improved performance of planar perovskite solar cells via ethanol-vapor annealing treatment

Abstract

Funding

Keywords

UN SDGs

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