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Understanding Differences in the Crystallization Kinetics between One-Step Slot-Die Coating and Spin Coating of MAPbI3 Using Multimodal In Situ Optical Spectroscopy

Title data

Schötz, Konstantin ; Greve, Christopher ; Langen, Arjan ; Gorter, Harrie ; Dogan, Ilker ; Galagan, Yulia ; van Breemen, Albert J. J. M. ; Gelinck, Gerwin H. ; Herzig, Eva M. ; Panzer, Fabian:
Understanding Differences in the Crystallization Kinetics between One-Step Slot-Die Coating and Spin Coating of MAPbI3 Using Multimodal In Situ Optical Spectroscopy.
In: Advanced Optical Materials. Vol. 9 (2021) Issue 21 . - No. 2101161.
ISSN 2195-1071
DOI: https://doi.org/10.1002/adom.202101161

Abstract in another language

Abstract To develop a detailed understanding about halide perovskite processing from solution, the crystallization processes are investigated during spin coating and slot-die coating of MAPbI3 at different evaporation rates by simultaneous in situ photoluminescence, light scattering, and absorption measurements. Based on the time evolution of the optical parameters it is found that for both processing methods initially solvent-complex-structures form, followed by perovskite crystallization. The latter proceeds in two stages for spin coating, while for slot-die coating only one perovskite crystallization phase occurs. For both processing methods, it is found that with increasing evaporation rates, the crystallization kinetics of the solvent-complex structure and the perovskite crystallization remain constant on a relative time scale, whereas the duration of the second perovskite crystallization in spin coating increases. This second perovskite crystallization appears restricted due to differences in solvent-complex phase morphologies from which the perovskite forms. The work emphasizes the importance of the exact precursor state properties on the perovskite formation. It further demonstrates that detailed analyses of multimodal optical in situ spectroscopy allows gaining a fundamental understanding of the crystallization processes that take place during solution processing of halide perovskites, independent from the specific processing method.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: absorption; halide perovskites; light scattering; photoluminescence; thin film formation
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics II - Optoelectronics of Soft Matter
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics II - Optoelectronics of Soft Matter > Chair Experimental Physics II - Optoelectronics of Soft Matter - Univ.-Prof. Dr. Anna Köhler
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Juniorprofessor Experimental Physics VII - Dynamics and Structure Formation
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Juniorprofessor Experimental Physics VII - Dynamics and Structure Formation > Juniorprofessor Experimental Physics VII - Dynamics and Structure Formation - Juniorprof. Dr. Eva Maria Herzig
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 22 Sep 2021 08:33
Last Modified: 25 Nov 2021 13:47
URI: https://eref.uni-bayreuth.de/id/eprint/66901