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A Novel Route for Fabrication of Stable CsPbI 3 Perovskite Thin Film by Thermal Evaporation
Author(s) -
Gupta Yashika,
Palakkandy Arun,
V.Syrotyuk Stepan ,
Kumar Kuldeep,
Arora Smriti
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201900458
Subject(s) - orthorhombic crystal system , fabrication , thin film , materials science , annealing (glass) , thermal stability , perovskite (structure) , colored , evaporation , lattice (music) , chemical engineering , nanotechnology , optoelectronics , composite material , crystallography , crystal structure , chemistry , physics , medicine , alternative medicine , pathology , engineering , thermodynamics , acoustics
Perovskite thin films hold promise as a potential candidate for high efficiency solar cells. In recent years, a wealth of results has been published on CsPbI 3 thin films. However, most of the literature reports that CsPbI 3 perovskite films are prone to aging where black colored CsPbI 3 films with cubic lattice change to yellow colored films with orthorhombic lattice upon exposure to ambient conditions. This poor stability presents itself as a major challenge in utilization of CsPbI 3 for device applications. This manuscript presents an alternate route for fabricating stable CsPbI 3 thin films using thermal evaporation. Experimentally, our samples were found to be stable, visually and structurally, over a period of six months. Even annealing of the samples did not induce structural changes.