Chelate-Pb Intermediate Engineering for High-Efficiency Perovskite Solar Cells

Jinzhi Niu, Dong Yang, Zhou Yang, Dapeng Wang, Xuejie Zhu, Xiaorong Zhang, Shengnan Zuo, Jiangshan Feng, Shengzhong Frank Liu

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Crystallization quality and grain size are key factors in fabricating high-performance planar-type perovskite photovoltaics. Herein, we used 1,8-octanedithiol as an effective additive in the [HC(NH 2 ) 2 ] 0.95 Cs 0.05 PbI 3 (FA 0.95 Cs 0.05 PbI 3 ) solution to improve the FA 0.95 Cs 0.05 PbI 3 film quality via solution processing. 1,8-Octanedithiol would coordinate with lead to form the chelate-Pb compound, leading to smaller Gibbs free energy during the perovskite crystallization process, facilitating formation of high-quality perovskite films with larger grains, smoother surfaces, lower electron trap densities, and longer carrier lifetimes compared to the nonadditive ones. As a result, the champion efficiency for devices with 3% 1,8-octanedithiol-doped FA 0.95 Cs 0.05 PbI 3 is raised to 19.36% from 18.39% of a device without the additive. The new technique is a promising way to fabricate perovskite photovoltaics with high performance.

Original languageEnglish (US)
Pages (from-to)14744-14750
Number of pages7
JournalACS Applied Materials and Interfaces
Volume10
Issue number17
DOIs
StatePublished - May 2 2018

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Perovskite
Crystallization
Electron traps
Carrier lifetime
Gibbs free energy
Perovskite solar cells
perovskite
Processing
1,8-octanedithiol

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Niu, Jinzhi ; Yang, Dong ; Yang, Zhou ; Wang, Dapeng ; Zhu, Xuejie ; Zhang, Xiaorong ; Zuo, Shengnan ; Feng, Jiangshan ; Liu, Shengzhong Frank. / Chelate-Pb Intermediate Engineering for High-Efficiency Perovskite Solar Cells. In: ACS Applied Materials and Interfaces. 2018 ; Vol. 10, No. 17. pp. 14744-14750.
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abstract = "Crystallization quality and grain size are key factors in fabricating high-performance planar-type perovskite photovoltaics. Herein, we used 1,8-octanedithiol as an effective additive in the [HC(NH 2 ) 2 ] 0.95 Cs 0.05 PbI 3 (FA 0.95 Cs 0.05 PbI 3 ) solution to improve the FA 0.95 Cs 0.05 PbI 3 film quality via solution processing. 1,8-Octanedithiol would coordinate with lead to form the chelate-Pb compound, leading to smaller Gibbs free energy during the perovskite crystallization process, facilitating formation of high-quality perovskite films with larger grains, smoother surfaces, lower electron trap densities, and longer carrier lifetimes compared to the nonadditive ones. As a result, the champion efficiency for devices with 3{\%} 1,8-octanedithiol-doped FA 0.95 Cs 0.05 PbI 3 is raised to 19.36{\%} from 18.39{\%} of a device without the additive. The new technique is a promising way to fabricate perovskite photovoltaics with high performance.",
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Niu, J, Yang, D, Yang, Z, Wang, D, Zhu, X, Zhang, X, Zuo, S, Feng, J & Liu, SF 2018, 'Chelate-Pb Intermediate Engineering for High-Efficiency Perovskite Solar Cells', ACS Applied Materials and Interfaces, vol. 10, no. 17, pp. 14744-14750. https://doi.org/10.1021/acsami.8b02257

Chelate-Pb Intermediate Engineering for High-Efficiency Perovskite Solar Cells. / Niu, Jinzhi; Yang, Dong; Yang, Zhou; Wang, Dapeng; Zhu, Xuejie; Zhang, Xiaorong; Zuo, Shengnan; Feng, Jiangshan; Liu, Shengzhong Frank.

In: ACS Applied Materials and Interfaces, Vol. 10, No. 17, 02.05.2018, p. 14744-14750.

Research output: Contribution to journalArticle

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AU - Niu, Jinzhi

AU - Yang, Dong

AU - Yang, Zhou

AU - Wang, Dapeng

AU - Zhu, Xuejie

AU - Zhang, Xiaorong

AU - Zuo, Shengnan

AU - Feng, Jiangshan

AU - Liu, Shengzhong Frank

PY - 2018/5/2

Y1 - 2018/5/2

N2 - Crystallization quality and grain size are key factors in fabricating high-performance planar-type perovskite photovoltaics. Herein, we used 1,8-octanedithiol as an effective additive in the [HC(NH 2 ) 2 ] 0.95 Cs 0.05 PbI 3 (FA 0.95 Cs 0.05 PbI 3 ) solution to improve the FA 0.95 Cs 0.05 PbI 3 film quality via solution processing. 1,8-Octanedithiol would coordinate with lead to form the chelate-Pb compound, leading to smaller Gibbs free energy during the perovskite crystallization process, facilitating formation of high-quality perovskite films with larger grains, smoother surfaces, lower electron trap densities, and longer carrier lifetimes compared to the nonadditive ones. As a result, the champion efficiency for devices with 3% 1,8-octanedithiol-doped FA 0.95 Cs 0.05 PbI 3 is raised to 19.36% from 18.39% of a device without the additive. The new technique is a promising way to fabricate perovskite photovoltaics with high performance.

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