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改变低维半透明钙钛矿薄膜的形态和缺陷 溶剂类型

Modifying morphology and defects of low-dimensional, semi-transparent perovskite thin films solvent type.

作者信息

Ponchai Jitprabhat, Kaewurai Paphada, Boonthum Chirapa, Pinsuwan Kusuma, Supasai Thidarat, Sahasithiwat Somboon, Kanjanaboos Pongsakorn

机构信息

School of Materials Science and Innovation, Faculty of Science, Mahidol University Bangkok 10400 Thailand.

Department of Materials Science, Faculty of Science, Kasetsart University Bangkok 10900 Thailand.

出版信息

RSC Adv. 2019 Apr 16;9(21):12047-12054. doi: 10.1039/c9ra00971j. eCollection 2019 Apr 12.

DOI:10.1039/c9ra00971j
PMID:35517027
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9063515/
Abstract

(PEA)(MA) Pb I Br 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 ( = 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.

摘要

（PEA）（MA）PbI Br钙钛矿是具有较宽带隙的半透明、颜色可调薄膜。它们具有用于半透明太阳能电池和智能窗应用的潜力。溶剂工程显著改变了形貌、吸光度、结晶度、电荷分离和缺陷，从而影响光电性能。在此，我们研究了溶剂类型对低维混合卤化物钙钛矿薄膜（n = 1、3和5）的影响，并确定N，N - 二甲基甲酰胺（DMF）：二甲基亚砜（DMSO）= 8：2为最合适的溶剂。混合溶剂调节了钙钛矿的生长速率，这导致了光滑的形貌和更大的微晶尺寸。通过表面光电压光谱和时间分辨光致发光，良好的电荷分离和低缺陷与DD82的使用有关。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5b9a/9063515/7ec6609bf9d5/c9ra00971j-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5b9a/9063515/f89d8204f64f/c9ra00971j-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5b9a/9063515/bbb9a877a59f/c9ra00971j-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5b9a/9063515/3023f96aa632/c9ra00971j-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5b9a/9063515/70c205a8a6ca/c9ra00971j-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5b9a/9063515/3338e94db60e/c9ra00971j-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5b9a/9063515/7ec6609bf9d5/c9ra00971j-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5b9a/9063515/f89d8204f64f/c9ra00971j-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5b9a/9063515/bbb9a877a59f/c9ra00971j-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5b9a/9063515/3023f96aa632/c9ra00971j-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5b9a/9063515/70c205a8a6ca/c9ra00971j-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5b9a/9063515/3338e94db60e/c9ra00971j-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5b9a/9063515/7ec6609bf9d5/c9ra00971j-f6.jpg

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