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一种含单乙醇铵阳离子MAMEAPbI的有机-无机杂化钙钛矿的合成、结构及光电性质

Synthesis, Structure, and Optoelectronic Properties of a Hybrid Organic-Inorganic Perovskite with a Monoethanolammonium Cation MAMEAPbI.

作者信息

Ryabko Andrey, Ovezov Maxat, Tuchkovsky Alexandr, Korepanov Oleg, Maximov Alexandr, Komolov Alexey, Lazneva Eleonora, Muratova Ekaterina, Vrublevsky Igor, Aleshin Andrey, Moshnikov Vyacheslav

机构信息

Laboratory of Nonequilibrium Processes in Semiconductors, Ioffe Institute, 26 Politekhnicheskaya, Saint Petersburg 194021, Russia.

Department of Micro and Nanoelectronics, Belarusian State University of Informatics and Radioelectronics, 220013 Minsk, Belarus.

出版信息

Nanomaterials (Basel). 2025 Mar 26;15(7):494. doi: 10.3390/nano15070494.

DOI:10.3390/nano15070494
PMID:40214540
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11990294/
Abstract

Hybrid organic-inorganic perovskites have emerged as promising materials for next-generation optoelectronic devices owing to their tunable properties and low-cost fabrication. We report the synthesis of 3D hybrid perovskites with monoethanolammonium cations. Specifically, we investigated the optoelectronic properties and morphological characteristics of polycrystalline films of hybrid perovskites MAMEAPbI, which contain methylammonium (MA) and monoethanolammonium (MEA) cations. MAMEAPbI crystallizes in a tetragonal perovskite structure. The substitution of methylammonium cations with monoethanolammonium ions led to an increase in the lattice parameters and the bandgap energy. Energy level diagrams of the synthesized samples were also constructed. The bandgap of MAMEAPbI makes it a promising material for use in tandem solar cells. These polycrystalline films, namely MAMEAPbI and MAMEAPbI were fabricated using a one-step spin-coating method without an antisolvent. These films exhibit a uniform surface morphology under the specified deposition parameters. Within the scope of this study, no evidence of dendritic structures or pinhole-type defects were observed. All synthesized samples demonstrated photocurrent generation under visible light illumination. Moreover, using monoethanolammonium cations reduced the hysteresis of the I-V characteristics, indicating improved device stability.

摘要

有机-无机杂化钙钛矿因其可调谐性能和低成本制造工艺，已成为下一代光电器件的有前景材料。我们报道了含单乙醇铵阳离子的三维杂化钙钛矿的合成。具体而言，我们研究了含甲基铵（MA）和单乙醇铵（MEA）阳离子的杂化钙钛矿MAMEAPbI多晶薄膜的光电性能和形态特征。MAMEAPbI以四方钙钛矿结构结晶。用单乙醇铵离子取代甲基铵阳离子导致晶格参数和带隙能量增加。还构建了合成样品的能级图。MAMEAPbI的带隙使其成为用于串联太阳能电池的有前景材料。这些多晶薄膜，即MAMEAPbI和MAMEAPbI，采用一步旋涂法且不使用反溶剂制备。在指定的沉积参数下，这些薄膜呈现出均匀的表面形态。在本研究范围内，未观察到树枝状结构或针孔型缺陷的迹象。所有合成样品在可见光照射下均表现出光电流产生。此外，使用单乙醇铵阳离子降低了I-V特性的滞后现象，表明器件稳定性得到改善。

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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/cd0b/11990294/88550a28deed/nanomaterials-15-00494-g008.jpg
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本文引用的文献

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