Investigating the effect of solvent vapours on crystallinity, phase, and optical, morphological and structural properties of organolead halide perovskite films.

Autor: More SA; Optoelectronics/Organic Photovoltaics Laboratory, Department of Physics, Kavayitri Bahinabai Chaudhari North Maharashtra University Jalgaon-425001 Maharashtra India ssghosh@nmu.ac.in., Halor RG; Optoelectronics/Organic Photovoltaics Laboratory, Department of Physics, Kavayitri Bahinabai Chaudhari North Maharashtra University Jalgaon-425001 Maharashtra India ssghosh@nmu.ac.in., Shaikh R; Optoelectronics/Organic Photovoltaics Laboratory, Department of Physics, Kavayitri Bahinabai Chaudhari North Maharashtra University Jalgaon-425001 Maharashtra India ssghosh@nmu.ac.in., Bisen GG; Optoelectronics/Organic Photovoltaics Laboratory, Department of Physics, Kavayitri Bahinabai Chaudhari North Maharashtra University Jalgaon-425001 Maharashtra India ssghosh@nmu.ac.in., Tarkas HS; Optoelectronics/Organic Photovoltaics Laboratory, Department of Physics, Kavayitri Bahinabai Chaudhari North Maharashtra University Jalgaon-425001 Maharashtra India ssghosh@nmu.ac.in., Tak SR; Optoelectronics/Organic Photovoltaics Laboratory, Department of Physics, Kavayitri Bahinabai Chaudhari North Maharashtra University Jalgaon-425001 Maharashtra India ssghosh@nmu.ac.in., Bade BR; Department of Physics, Savitribai Phule Pune University Pune-411007 Maharashtra India., Jadkar SR; Department of Physics, Savitribai Phule Pune University Pune-411007 Maharashtra India., Sali JV; Optoelectronics/Organic Photovoltaics Laboratory, Department of Physics, Kavayitri Bahinabai Chaudhari North Maharashtra University Jalgaon-425001 Maharashtra India ssghosh@nmu.ac.in., Ghosh SS; Optoelectronics/Organic Photovoltaics Laboratory, Department of Physics, Kavayitri Bahinabai Chaudhari North Maharashtra University Jalgaon-425001 Maharashtra India ssghosh@nmu.ac.in.
Jazyk: angličtina
Zdroj: RSC advances [RSC Adv] 2020 Nov 02; Vol. 10 (66), pp. 39995-40004. Date of Electronic Publication: 2020 Nov 02 (Print Publication: 2020).
DOI: 10.1039/d0ra07926j
Abstrakt: A comprehensive study regarding the effect of different solvent vapours on organolead halide perovskite properties is lacking. In the present work, the impact of exposing CH 3 NH 3 PbI 3 films to the vapours of commonly available solvents has been studied. The interaction with perovskite has been correlated to solvent properties like dielectric constant, molecular dipole moment, Gutmann donor number and boiling point. Changes in the crystallinity, phase, optical absorption, morphologies at both nanometer and micrometer scale, functional groups and structures were studied using X-ray diffraction, UV-visible absorption, FE-SEM, FTIR and Raman spectroscopies. Among the aprotic solvents DMSO and DMF vapours deteriorate the crystallinity, phase, and optical, morphological and structural properties of the perovskite films in a very short time, but due to the difference in solvent property values acetone affects the perovskite properties differently. Polar protic 2-propanol and water vapours moderately affect the perovskite properties. However 2-propanol can solvate the organic cation CH 3 NH 3 + more efficiently as compared to water and a considerable difference was found in the film properties especially the morphology at the nanoscale. Nonpolar chlorobenzene vapour minutely affects the perovskite morphology but toluene was found to enhance perovskite crystallinity. Solvent properties can be effectively used to interpret the coordination ability of a solvent. The present study can be immensely useful in understanding the effects of different solvent vapours and also their use for post-deposition processing (like solvent vapour annealing) to improve their properties.
Competing Interests: There are no conflicts to declare.
(This journal is © The Royal Society of Chemistry.)
Databáze: MEDLINE
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