Deposition of methylammonium iodide via evaporation - combined kinetic and mass spectrometric study.

ABSTRACT: Methylammonium lead halide perovskites have recently emerged as a very attractive and versatile material for solar cell production. Several different perovskite fabrication methods can be used though most of them involve either spin coating, evaporation under high vacuum or a combination hereof. In this study we focus on thermal evaporation of methylammonium iodide (MAI), or more specifically, why this process, in terms of a physical vapour deposition, requires such a high deposition pressure to be successful. We use quartz crystal micro balance (QCM) measurements as well as mass spectrometry. The results indicate that MAI has a very low sticking especially if the substrate is held at elevated temperatures and is furthermore observed to evaporate with disproportionation into primarily CH

SUBMITTER: Bækbo MJ 

PROVIDER: S-EPMC9085246 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature