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High-Performance Inverted Planar Heterojunction Perovskite Solar Cells Based on Lead Acetate Precursor with Efficiency Exceeding 18%

Zhao, L, Luo, D, Wu, J, Huang, Qiang, Zhang, Wei, Chen, Ke, Liu, T, Liu, L, Zhang, Y, Lui, F, Russell, T, Snaith, HJ, Zhu, R and Gong, Q (2016) High-Performance Inverted Planar Heterojunction Perovskite Solar Cells Based on Lead Acetate Precursor with Efficiency Exceeding 18% Advanced Functional Materials, 26 (20). pp. 3508-3514.

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Abstract

Organic–inorganic lead halide perovskites are emerging materials for the next-generation photovoltaics. Lead halides are the most commonly used lead precursors for perovskite active layers. Recently, lead acetate (Pb(Ac)2) has shown its superiority as the potential replacement for traditional lead halides. Here, we demonstrate a strategy to improve the efficiency for the perovskite solar cell based on lead acetate precursor. We utilized methylammonium bromide as an additive in the Pb(Ac)2 and methylammonium iodide precursor solution, resulting in uniform, compact and pinhole-free perovskite films. We observed enhanced charge carrier extraction between the perovskite layer and charge collection layers and delivered a champion power conversion efficiency of 18.3% with a stabilized output efficiency of 17.6% at the maximum power point. The optimized devices also exhibited negligible current density–voltage (J–V) hysteresis under the scanning conditions.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
NameEmailORCID
Zhao, LUNSPECIFIEDUNSPECIFIED
Luo, DUNSPECIFIEDUNSPECIFIED
Wu, JUNSPECIFIEDUNSPECIFIED
Huang, Qiangq.huang@surrey.ac.ukUNSPECIFIED
Zhang, Weiwz0003@surrey.ac.ukUNSPECIFIED
Chen, KeUNSPECIFIEDUNSPECIFIED
Liu, TUNSPECIFIEDUNSPECIFIED
Liu, LUNSPECIFIEDUNSPECIFIED
Zhang, YUNSPECIFIEDUNSPECIFIED
Lui, FUNSPECIFIEDUNSPECIFIED
Russell, TUNSPECIFIEDUNSPECIFIED
Snaith, HJUNSPECIFIEDUNSPECIFIED
Zhu, RUNSPECIFIEDUNSPECIFIED
Gong, QUNSPECIFIEDUNSPECIFIED
Date : 13 April 2016
Identification Number : https://doi.org/10.1002/adfm.201601175
Copyright Disclaimer : This is the peer reviewed version of the following article: Zhao, L., Luo, D., Wu, J., Hu, Q., Zhang, W., Chen, K., Liu, T., Liu, Y., Zhang, Y., Liu, F., Russell, T. P., Snaith, H. J., Zhu, R. and Gong, Q. (2016), High-Performance Inverted Planar Heterojunction Perovskite Solar Cells Based on Lead Acetate Precursor with Efficiency Exceeding 18%. Adv. Funct. Mater., 26: 3508–3514. doi:10.1002/adfm.201601175, which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1002/adfm.201601175/full. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Uncontrolled Keywords : : Perovskite Solar Cells, Inverted Planar Heterojunction, Lead Acetate, Additive, High Efficiency
Depositing User : Melanie Hughes
Date Deposited : 13 Jun 2017 16:33
Last Modified : 13 Jun 2017 16:33
URI: http://epubs.surrey.ac.uk/id/eprint/841373

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