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Modifying morphology and defects of low-dimensional, semi-transparent perovskite thin films via solvent type
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Document Title
Modifying morphology and defects of low-dimensional, semi-transparent perovskite thin films via solvent type
Author
Ponchai J, Kaewurai P, Boonthum C, Pinsuwan K, Supasai T, Sahasithiwat S, Kanjanaboos P
Name from Authors Collection
Affiliations
Mahidol University; Kasetsart University; National Science & Technology Development Agency - Thailand; National Metal & Materials Technology Center (MTEC)
Type
Article
Source Title
RSC ADVANCES
Year
2019
Volume
9
Issue
21
Page
12047-12054
Open Access
Green Published, gold
Publisher
ROYAL SOC CHEMISTRY
DOI
10.1039/c9ra00971j
Format
Abstract
(PEA)(2)(MA)(n-1)PbnIn+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.
Funding Sponsor
EGAT; NSTDA [FDA-CO-2560-5449-TH]; Thailand Research Fund [MRG61]; Research Fund for DPST graduate with First Placement [005/2558]
License
CC BY
Rights
Publisher
Publication Source
WOS