Long-term Stability of Mixed Perovskites. Issue 1771 (16th June 2015)

• Record Type: Journal Article
• Authors: Sarswat, Prashant K; Free, Michael L
• Editors: Gloeckler, M.; Tiwari, A.N.; Yamada, A.; Yan, Y.; Kim, J.Y.; Miyasaka, T.; Mora-Seró, I.; Zhu, K.; Andersson, M.; Manca, J.V.; Palomares, E.; Vandewal, K.; Li, T.; Mastro, M.; Tao, M.; Wang, Q.
• Is Part Of: MRS proceedings. Issue 1771(2015)
• Publication Date: 2015-06-16
• Subjects: photovoltaic, -- chemical synthesis, -- optical properties; Electrical engineering -- Congresses; Physics -- Congresses; Materials -- Research -- Congresses; Materials science -- Congresses; 620.11
• DOI: 10.1557/opl.2015.612
• Languages: English
• ISSNs: 0272-9172

Abstract

ABSTRACT: Long term stability of mixed perovskite compounds is one of the important concerns for prolonged viability and economical use of perovskite based solar cells. Degradation in perovskite films mainly occurs due to exposure to moisture. Hence, a controlled atmospheric condition and lower humidity is preferred for device fabrication and use. Many different strategies such as use of thin and wide band gap semiconductor layer, improvement in pour filling of metal oxide film, and utilization of AgTFSI have been attempted to improve device stability. However, for long term durability, there is an urgent need to increase stability of parent perovskite layer, apart from use of protective layers. In this study we examined water resistant additive, structural modifications, and stoichiometric modification for enhanced film durability. These strategies and preliminary results are discussed in this report.