Controllable Heterogenous Seeding-Induced Crystallization for High-Efficiency FAPbI3 -Based Perovskite Solar Cells Over 24

Controllable Heterogenous Seeding-Induced Crystallization for High-Efficiency FAPbI3 -Based Perovskite Solar Cells Over 24

© 2022 Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 34(2022), 36 vom: 01. Sept., Seite e2204366
1. Verfasser: Zhang, Hengkai (VerfasserIn)
Weitere Verfasser: Ren, Zhiwei, Liu, Kuan, Qin, Minchao, Wu, Zehan, Shen, Dong, Zhang, Yaokang, Chandran, Hrisheekesh Thachoth, Hao, Jianhua, Lee, Chun-Sing, Lu, Xinhui, Zheng, Zijian, Huang, Jinsong, Li, Gang
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article heterogenous seeding-induced crystallization perovskite solar cells α-FAPbI3
Beschreibung
Zusammenfassung:© 2022 Wiley-VCH GmbH.
The addition of small seeding particles into a supersaturated solution is one among the most effective approaches to obtain high-quality semiconductor materials via increased crystallization rates. However, limited study is conducted on this approach for the fabrication of perovskite solar cells. Here, a new strategy-"heterogenous seeding-induced crystallization (hetero-SiC)" to assist the growth of FAPbI3 -based perovskite is proposed. In this work, di-tert-butyl(methyl)phosphonium tetrafluoroborate is directly introduced into the precursor, which forms a low-solubility complex with PbI2 . The low-solubility complex can serve as the seed to induce crystallization of the perovskite during the solvent-evaporation process. Various in situ measurement tools are used to visualize the hetero-SiC process, which is shown to be an effective way of manipulating the nucleation and crystal growth of perovskites. The hetero-SiC process greatly improves the film quality, reduces film defects, and suppresses nonradiative recombination. A hetero-SIC proof-of-concept device exhibits outstanding performance with 24.0% power conversion efficiency (PCE), well over the control device with 22.2% PCE. Additionally, hetero-SiC perovskite solar cell (PSC) stability under light illumination is enhanced and the PSC retains 84% of its initial performance after 1400 h of light illumination
Beschreibung:Date Revised 08.09.2022
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.202204366