Crystallization process of perovskite modified by adding lead acetate in precursor solution for better morphology and higher device efficiency

Authors

Debei Liu
Gang Wang
Fei Wu
Rong Wu
Tian Chen
Baofu Ding, Edith Cowan UniversityFollow
Qunliang Song

Document Type

Journal Article

Publication Title

Organic Electronics

Publisher

Elsevier

Place of Publication

Netherlands

School

School of Engineering / Electron Science Research Institute

RAS ID

27023

Comments

Liu, D. B., Wang, G., Wu, F., Wu, R., Chen, T., Ding, B. F., & Song, Q. L. (2017). Crystallization process of perovskite modified by adding lead acetate in precursor solution for better morphology and higher device efficiency. Organic Electronics, 43, 189-195. https://doi.org/10.1016/j.orgel.2017.01.022

Abstract

The power conversion efficiency of 15.20% is achieved in this study for planar perovskite solar cells fabricated in air from one-step spin-coating lead chloride (PbCl₂) based precursor modified by additional adding 1% lead acetate (PbAc₂), much higher than the reference one from pure PbCl₂ precursor without modification. A higher quality perovskite film with increased coverage is the reason for this improvement. The perovskite nucleation rate and start time of nucleation are key parameters of perovskite crystallization kinetics. By adding 1% PbAc₂ to the precursor, the density of perovskite crystal nucleuses is optimized to achieve the best film and then the highest device performance.

DOI

10.1016/j.orgel.2017.01.022

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