Potassium Thiocyanate-Assisted Enhancement of Slot-Die-Coated Perovskite Films for High-Performance Solar Cells
Type
ArticleAuthors
Xu, FuzongLiu, Jiang

Subbiah, Anand Selvin
Liu, Wenzhu
Kang, Jingxuan
Harrison, George T.
Yang, Xinbo
Isikgor, Furkan Halis

Aydin, Erkan
de Bastiani, Michele
De Wolf, Stefaan

KAUST Department
Physical Sciences and Engineering Division (PSE) KAUST Solar Center (KSC) King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Kingdom of Saudi ArabiaKAUST Solar Center (KSC)
Material Science and Engineering Program
Material Science and Engineering
Physical Science and Engineering (PSE) Division
KAUST Grant Number
OSR-2019-CARF/CCF-3097OSR-2019-CRG-4093
Date
2021-02-07Submitted Date
2020-10-29Permanent link to this record
http://hdl.handle.net/10754/667324
Metadata
Show full item recordAbstract
Slot-die coating is highly promising for scaled deposition of metal halide perovskite thin films. However, the power conversion efficiencies (PCEs) of slot-die-prepared perovskite solar cells (PSCs) still lag behind their spin-casted counterparts. To resolve this issue, the crystal size and quality of slot-die-coated methylammonium lead triiodide (MAPbI3) perovskite films are dramatically improved via additive engineering using potassium thiocyanate (KSCN). The modified micrometer-thick films have an average grain size of ≈11 μm and charge-carrier parameters that are comparable with single-crystal perovskites, such as a 1.89 μs lifetime, 136.65 ± 31.52 cm2 V−1 s−1 mobility, and 25.15 ± 3.55 μm diffusion length. Exploiting these enhanced properties, planar inverted PSCs with negligible hysteresis are fabricated and an average and a maximum PCE of 20.14% and 21.38%, respectively, are achieved which are among the highest reported values for slot-die-coated PSCs. Notably, our devices have a narrow PCE distribution along the slot-die coating axis, highlighting slot-die coating's promise to fabricate large-scale, high-performance PSCs.Citation
Xu, F., Liu, J., Subbiah, A. S., Liu, W., Kang, J., Harrison, G. T., … De Wolf, S. (2021). Potassium Thiocyanate-Assisted Enhancement of Slot-Die-Coated Perovskite Films for High-Performance Solar Cells. Small Science, 2000044. doi:10.1002/smsc.202000044Sponsors
F.X. and J.L. contributed equally to this work. This work was supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under award nos.: OSR-2019-CARF/CCF-3097 and OSR-2019-CRG-4093Publisher
WileyJournal
Small ScienceAdditional Links
https://onlinelibrary.wiley.com/doi/10.1002/smsc.202000044ae974a485f413a2113503eed53cd6c53
10.1002/smsc.202000044
Scopus Count
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