TY - JOUR
T1 - Potassium Thiocyanate-Assisted Enhancement of Slot-Die-Coated Perovskite Films for High-Performance Solar Cells
AU - Xu, Fuzong
AU - Liu, Jiang
AU - Subbiah, Anand Selvin
AU - Liu, Wenzhu
AU - Kang, Jingxuan
AU - Harrison, George T.
AU - Yang, Xinbo
AU - Isikgor, Furkan Halis
AU - Aydin, Erkan
AU - de Bastiani, Michele
AU - De Wolf, Stefaan
N1 - KAUST Repository Item: Exported on 2021-02-11
Acknowledged KAUST grant number(s): OSR-2019-CARF/CCF-3097, OSR-2019-CRG-4093
Acknowledgements: 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-4093
PY - 2021/2/7
Y1 - 2021/2/7
N2 - 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.
AB - 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.
UR - http://hdl.handle.net/10754/667324
UR - https://onlinelibrary.wiley.com/doi/10.1002/smsc.202000044
U2 - 10.1002/smsc.202000044
DO - 10.1002/smsc.202000044
M3 - Article
SN - 2688-4046
SP - 2000044
JO - Small Science
JF - Small Science
ER -