@article{0f52ee471cf0459ca1938f98ce04c9fd,
title = "Zwitterionic-Surfactant-Assisted Room-Temperature Coating of Efficient Perovskite Solar Cells",
abstract = "We demonstrated a multifunctional zwitterionic surfactant incorporated into perovskite ink to facilitate room-temperature meniscus coating of high-quality perovskite films. We in situ investigated the perovskite crystallization pathway and emphasized the surfactant's synergistic role in film construction, crystallization kinetics modulation, defect passivation, and moisture barrier protection. The universality and versatility of this strategy not only enabled higher efficiencies over 22\% (0.04 cm2 active area) and 21\% (0.8 cm2) across perovskite compositions and device architectures but also significantly enhanced the stability under different aging conditions.",
keywords = "crystallization kinetics, defect passivation, meniscus coating, perovskite solar cells, room-temperature process, zwitterionic surfactant",
author = "Kuan Liu and Qiong Liang and Minchao Qin and Dong Shen and Hang Yin and Zhiwei Ren and Yaokang Zhang and Hengkai Zhang and Fong, \{Patrick W.K.\} and Zehan Wu and Jiaming Huang and Jianhua Hao and Zijian Zheng and So, \{Shu Kong\} and Lee, \{Chun Sing\} and Xinhui Lu and Gang Li",
note = "Funding Information: This work was supported by Research Grants Council (RGC) of Hong Kong (grant nos. 15246816 and C5037-18G), RGC Postdoctoral Fellowship Scheme (PDFS2021-5S04, K.L.), Shenzhen Science and Technology Innovation Commission (project no. JCYJ20170413154602102), University Supporting Fund for Project of Strategic Importance (project no. 1-ZE29), Major Research (1-BBAS), and Sir Sze-yuen Chung Endowed Professorship Fund (8?8480) provided by the Hong Kong Polytechnic University; X.L. and M.Q. acknowledge the financial support from Research Grant Council of Hong Kong (General Research Fund no. 14314216). All authors are grateful for the beam time and technical support provided by 23A SWAXS beamline at National Synchrotron Radiation Research Center (NSRRC), Hsinchu. K.L. and G.L. conceived the paper. K.L. and Q.L. carried out solar cell fabrication and part of characterization. M.Q. and X.L. performed in situ and ex situ GIWAXS and analyzed the data. H.Y. and S.K.S. examined the TAS analysis. D.S. and C.S.L. conducted the XPS measurement. Y.Z. and Z.Z. measured static water contact angles and Mott-Schottky analysis. H.Z. Z.R. and J.H. assisted with XRD, SEM, PL, and FTIR measurements. P.W.K.F. assisted with in situ UV-vis absorption analysis. Z.W. and J.H. assisted with fluence- and wavelength-dependent TRPL decays. K.L. X.L. and G.L. wrote the manuscript. All authors made a substantial contribution to the discussion of the content and reviewed and edited this manuscript before submission. G.L. and X.L. supervised this work. The authors declare no competing interests. Funding Information: This work was supported by Research Grants Council (RGC) of Hong Kong (grant nos. 15246816 and C5037-18G ), RGC Postdoctoral Fellowship Scheme ( PDFS2021-5S04 , K.L.), Shenzhen Science and Technology Innovation Commission (project no. JCYJ20170413154602102 ), University Supporting Fund for Project of Strategic Importance (project no. 1-ZE29), Major Research ( 1-BBAS ), and Sir Sze-yuen Chung Endowed Professorship Fund ( 8–8480 ) provided by the Hong Kong Polytechnic University ; X.L. and M.Q. acknowledge the financial support from Research Grant Council of Hong Kong (General Research Fund no. 14314216 ). All authors are grateful for the beam time and technical support provided by 23A SWAXS beamline at National Synchrotron Radiation Research Center (NSRRC), Hsinchu. Publisher Copyright: {\textcopyright} 2020 Elsevier Inc.",
year = "2020",
month = nov,
day = "18",
doi = "10.1016/j.joule.2020.09.011",
language = "English",
volume = "4",
pages = "2404--2425",
journal = "Joule",
issn = "2542-4351",
publisher = "Cell Press",
number = "11",
}