Hybrid Perovskite Thin-Film Photovoltaics: In Situ Diagnostics and Importance of the Precursor Solvate Phases

Rahim Munir; Arif D Sheikh; Maged Abdelsamie; Hanlin Hu; Liyang Yu; Kui Zhao; Taesoo Kim; Omar El Tall; Ruipeng Li; Detlef-M Smilgies; Aram Amassian

doi:10.1002/adma.201604113

Hybrid Perovskite Thin-Film Photovoltaics: In Situ Diagnostics and Importance of the Precursor Solvate Phases

Adv Mater. 2017 Jan;29(2). doi: 10.1002/adma.201604113. Epub 2016 Nov 7.

Authors

Affiliations

¹ KAUST Solar Center (KSC) and Physical Science and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.
² Analytical Core Lab (ACL), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.
³ Cornell High Energy Synchrotron Source (CHESS), Cornell University, Ithaca, NY, 14850, USA.

PMID: 28066984
DOI: 10.1002/adma.201604113

Abstract

Solution-processed hybrid perovskite semiconductors attract a great deal of attention, but little is known about their formation process. The one-step spin-coating process of perovskites is investigated in situ, revealing that thin-film formation is mediated by solid-state precursor solvates and their nature. The stability of these intermediate phases directly impacts the quality and reproducibility of thermally converted perovskite films and their photovoltaic performance.

Keywords: hybrid organic-inorganic perovskite solar cells; in situ diagnostics; precursors; solution processing; solvates.