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Fast Optical Reflectance Measurements during Spin Coating and Annealing of Organic–Inorganic Perovskite Precursor Solutions
Author(s) -
Rappich Jörg,
Kaspari Christian,
Camus Christian,
Nickel Norbert H.
Publication year - 2021
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.202170019
Subject(s) - crystallization , annealing (glass) , materials science , spin coating , triiodide , chemical engineering , coating , perovskite (structure) , reflectivity , mineralogy , analytical chemistry (journal) , optics , nanotechnology , composite material , chemistry , organic chemistry , physics , electrode , dye sensitized solar cell , engineering , electrolyte
In article number 2000479 , Jörg Rappich and co‐workers address early stages of film formation and crystallization of organic lead triiodide perovskites by employing in‐situ high‐speed spectral reflectance measurements. The time scale ranges from 0.2 milliseconds to seconds. Data were taken during spincoating and subsequent low‐temperature annealing. The measurements enable the investigation of changes in the solution of the spin‐coating process. The evaporation of the solvent during spin‐coating results in the spontaneous crystallization of the perovskite layer. During the subsequent annealing process, the diffuse reflectance measured with high sensitivity provides insight into the transformation and crystallization process of the precursor layer to the final perovskite layer.