Crystallization Control for Ambient Printed FA-Based Lead Triiodide Perovskite Solar Cells

Crystallization Control for Ambient Printed FA-Based Lead Triiodide Perovskite Solar Cells

© 2023 Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 35(2023), 51 vom: 28. Dez., Seite e2303384
1. Verfasser: Yin, Lei (VerfasserIn)
Weitere Verfasser: Huang, Wenliang, Fang, Junjie, Ding, Zicheng, Jin, Chengkai, Du, Yachao, Lang, Lei, Yang, Tinghuan, Wang, Shumei, Cai, Weilun, Liu, Chou, Zhao, Guangtao, Yang, Yingguo, Liu, Shengzhong Frank, Bu, Tongle, Zhao, Kui
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article crystallization dynamics halide perovskite photovoltaics in situ measurement scalable fabrication
Beschreibung
Zusammenfassung:© 2023 Wiley-VCH GmbH.
Upscalable printing of high-performance and stable perovskite solar cells (PSCs) is highly desired for commercialization. However, the efficiencies of printed PSCs lag behind those of their lab-scale spin-coated counterparts owing to the lack of systematic understanding and control over perovskite crystallization dynamics. Here, the controlled crystallization dynamics achieved using an additive 1-butylpyridine tetrafluoroborate (BPyBF4 ) for high-quality ambient printed α-formamidinium lead triiodide (FAPbI3 ) perovskite films are reported. Using in situ grazing-incidence wide-angle X-ray scattering and optical diagnostics, the spontaneous formation of α-FAPbI3 from precursors during printing without the involvement of  δ-FAPbI3 is demonstrated. The addition of BPyBF4 delays the crystallization onset of α-FAPbI3 , enhances the conversion from sol-gel to perovskite, and reduces stacking defects during printing. Therefore, the altered crystallization results in fewer voids, larger grains, and less trap-induced recombination loss within printed films. The printed PSCs yield high power conversion efficiencies of 23.50% and 21.60% for a 0.09 cm-2 area device and a 5 cm × 5 cm-area module, respectively. Improved device stability is further demonstrated, i.e., approximately 94% of the initial efficiency is retained for over 2400 h under ambient conditions without encapsulation. This study provides an effective crystallization control method for the ambient printing manufacture of large-area high-performance PSCs
Beschreibung:Date Revised 21.12.2023
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.202303384