Boosting Perovskite Solar Cells Efficiency and Stability Interfacial Passivation of Crosslinked Fullerene Eliminates the "Burn-in" Decay

Boosting Perovskite Solar Cells Efficiency and Stability : Interfacial Passivation of Crosslinked Fullerene Eliminates the "Burn-in" Decay

© 2022 Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 35(2023), 2 vom: 01. Jan., Seite e2207656
1. Verfasser: Ding, Changzeng (VerfasserIn)
Weitere Verfasser: Yin, Li, Wang, Jinlong, Larini, Valentina, Zhang, Lianping, Huang, Rong, Nyman, Mathias, Zhao, Liyi, Zhao, Chun, Li, Weishi, Luo, Qun, Shen, Yanbin, Österbacka, Ronald, Grancini, Giulia, Ma, Chang-Qi
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article Li+ ion migration cross-linked PCBM operational stability perovskite solar cells “burn-in” degradation
Beschreibung
Zusammenfassung:© 2022 Wiley-VCH GmbH.
Perovskite solar cells (PSCs) longevity is nowadays the bottleneck for their full commercial exploitation. Although lot of research is ongoing, the initial decay of the output power - an effect known as "burn-in" degradation happening in the first 100 h - is still unavoidable, significantly reducing the overall performance (typically of >20%). In this paper, the origin of the "burn-in" degradation in n-i-p type PSCs is demonstrated that is directly related to Li+ ions migration coming from the SnO2 electron transporting layer visualized by time-of-flight secondary ion mass spectrometry (TOF-SIMS) measurements. To block the ion movement, a thin cross-linked [6,6]-phenyl-C61-butyric acid methyl ester layer on top of the SnO2 layer is introduced, resulting in Li+ immobilization. This results in the elimination of the "burn-in" degradation, showing for the first time a zero "burn-in" loss in the performances while boosting device power conversion efficiency to >22% for triple-cation-based PSCs and >24% for formamidinium-based (FAPbI3 ) PSCs, proving the general validity of this approach and creating a new framework for the realization of stable PSCs devices
Beschreibung:Date Completed 13.01.2023
Date Revised 13.01.2023
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.202207656