Fabrication of Efficient Organic-Inorganic Perovskite Solar Cells in Ambient Air

Jian Wu; Jing Jing Dong; Si Xuan Chen; Hui Ying Hao; Jie Xing; Hao Liu

doi:10.1186/s11671-018-2714-z

Fabrication of Efficient Organic-Inorganic Perovskite Solar Cells in Ambient Air

Jian Wu, Jing Jing Dong, Si Xuan Chen, Hui Ying Hao, Jie Xing, Hao Liu

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

24 Scopus citations

Abstract

Although many groups have been trying to prepare perovskite solar cells (PSCs) in ambient air, the power conversion efficiency (PCE) is still low. Besides, the effect of moisture on the formation of perovskite films is still controversial. In this paper, we studied the effect of moisture on the formation of perovskite films in detail, and found that moisture can speed up the crystallizing process of PbI₂ films to form poor-quality films with large grain size and surface roughness, while, for the conversion of PbI₂ to perovskite films, a small amount of moisture is not adverse, and even beneficial. On this basis, we report the successful fabrication of efficient mesoporous PSCs with PCE of 16.00% under ambient air conditions at 25% relative humidity by adding a small amount of n-butyl amine into the solution of PbI₂ to enhance the quality of PbI₂ films and thus to achieve high-quality perovskite films with smooth surface, large crystal grains, and high crystal quality.

Original language	English
Article number	293
Journal	Nanoscale Research Letters
Volume	13
DOIs	https://doi.org/10.1186/s11671-018-2714-z
State	Published - 2018
Externally published	Yes

Funding

This work was financially supported by “the National Natural Science Foundation of China” (Grand No. 11404293) and the “the Fundamental Research Funds for the Central Universities” (Grand No. 2652017149 and 2652015189). Thanks to China University of Geosciences Beijing for all the support through our research on perovskite solar cells. This work was financially supported by “the National Natural Science Foundation of China” (Grand No. 11404293) and the “the Fundamental Research Funds for the Central Universities” (Grand No. 2652017149 and 2652015189). The datasets supporting the conclusions of this article are included within the article.

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

Keywords

81.05.Lg61.72.Cc81.10.Dn84.60.Jt
Ambient air
Moisture
N-butyl amine
Perovskite solar cells

UN SDGs

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

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10.1186/s11671-018-2714-z

Cite this

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abstract = "Although many groups have been trying to prepare perovskite solar cells (PSCs) in ambient air, the power conversion efficiency (PCE) is still low. Besides, the effect of moisture on the formation of perovskite films is still controversial. In this paper, we studied the effect of moisture on the formation of perovskite films in detail, and found that moisture can speed up the crystallizing process of PbI2 films to form poor-quality films with large grain size and surface roughness, while, for the conversion of PbI2 to perovskite films, a small amount of moisture is not adverse, and even beneficial. On this basis, we report the successful fabrication of efficient mesoporous PSCs with PCE of 16.00% under ambient air conditions at 25% relative humidity by adding a small amount of n-butyl amine into the solution of PbI2 to enhance the quality of PbI2 films and thus to achieve high-quality perovskite films with smooth surface, large crystal grains, and high crystal quality.",

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AU - Wu, Jian

AU - Dong, Jing Jing

AU - Chen, Si Xuan

AU - Hao, Hui Ying

AU - Xing, Jie

AU - Liu, Hao

PY - 2018

Y1 - 2018

N2 - Although many groups have been trying to prepare perovskite solar cells (PSCs) in ambient air, the power conversion efficiency (PCE) is still low. Besides, the effect of moisture on the formation of perovskite films is still controversial. In this paper, we studied the effect of moisture on the formation of perovskite films in detail, and found that moisture can speed up the crystallizing process of PbI2 films to form poor-quality films with large grain size and surface roughness, while, for the conversion of PbI2 to perovskite films, a small amount of moisture is not adverse, and even beneficial. On this basis, we report the successful fabrication of efficient mesoporous PSCs with PCE of 16.00% under ambient air conditions at 25% relative humidity by adding a small amount of n-butyl amine into the solution of PbI2 to enhance the quality of PbI2 films and thus to achieve high-quality perovskite films with smooth surface, large crystal grains, and high crystal quality.

AB - Although many groups have been trying to prepare perovskite solar cells (PSCs) in ambient air, the power conversion efficiency (PCE) is still low. Besides, the effect of moisture on the formation of perovskite films is still controversial. In this paper, we studied the effect of moisture on the formation of perovskite films in detail, and found that moisture can speed up the crystallizing process of PbI2 films to form poor-quality films with large grain size and surface roughness, while, for the conversion of PbI2 to perovskite films, a small amount of moisture is not adverse, and even beneficial. On this basis, we report the successful fabrication of efficient mesoporous PSCs with PCE of 16.00% under ambient air conditions at 25% relative humidity by adding a small amount of n-butyl amine into the solution of PbI2 to enhance the quality of PbI2 films and thus to achieve high-quality perovskite films with smooth surface, large crystal grains, and high crystal quality.

KW - 81.05.Lg61.72.Cc81.10.Dn84.60.Jt

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KW - Moisture

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Fabrication of Efficient Organic-Inorganic Perovskite Solar Cells in Ambient Air

Abstract

Funding

Keywords

UN SDGs

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