Publication: Modifying morphology and defects of low-dimensional, semi-transparent perovskite thin films: Via solvent type
Issued Date
2019-01-01
Resource Type
ISSN
20462069
Other identifier(s)
2-s2.0-85064706981
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Mahidol University
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SCOPUS
Bibliographic Citation
RSC Advances. Vol.9, No.21 (2019), 12047-12054
Suggested Citation
Jitprabhat Ponchai, Paphada Kaewurai, Chirapa Boonthum, Kusuma Pinsuwan, Thidarat Supasai, Somboon Sahasithiwat, Pongsakorn Kanjanaboos Modifying morphology and defects of low-dimensional, semi-transparent perovskite thin films: Via solvent type. RSC Advances. Vol.9, No.21 (2019), 12047-12054. doi:10.1039/c9ra00971j Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/50539
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Title
Modifying morphology and defects of low-dimensional, semi-transparent perovskite thin films: Via solvent type
Abstract
© 2019 The Royal Society of Chemistry. (PEA)2(MA)n-1PbnIn+1Br2n perovskites are semi-transparent, color-tunable thin films with broader band gaps. They have the potential for semi-transparent solar cell and smart window applications. Solvent engineering significantly alters the morphology, absorbance, crystallinity, charge separation, and defects, thereby influencing the optoelectronic properties. Herein, we investigated the effect of the solvent type on the low dimensional, mixed halide perovskite thin films (n = 1, 3, and 5) and identified DMF : DMSO = 8 : 2 as the most suitable solvent. The mixed solvent regulated the growth rate of perovskites, which led to the smooth morphology and larger crystallite size. Through surface photovoltage spectroscopy and time resolved photoluminescence, good charge separation and low defects were linked to DD82 usage.