旋涂钙钛矿MAPbI3–xBrx纳米针的结构和光学特性

IF 0.9 Q3 Engineering Surface Engineering and Applied Electrochemistry Pub Date : 2023-10-17 DOI:10.3103/S1068375523050125

H. Najih, L. Boulkaddat, A. Tihane, A. Narjis, A. Elfanaoui, A. Ihlal

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引用次数: 0

摘要

摘要——本文采用旋涂技术在玻璃衬底上合成了钙钛矿型MAPbI3–xBrx纳米针。X射线图显示四方相的形成。通过将Br浓度增加到25%，微晶尺寸几乎是恒定的。光学测量显示，随着Br浓度的增加，能带隙线性增加，导致吸收开始的蓝移。扫描电子显微镜图像显示了针状的形成。在现有研究的基础上解释了晶粒尺寸的演变。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Structural and Optical Characterization of Spin-Coated Perovskite MAPbI3 – xBrx Nano-Needles

Abstract—

The presented paper dals with perovskite MAPbI_{3 – x}Br_x nano-needles synthesized on the glass substrates by the spin coating technic. X-ray patterns showed the formation of the tetragonal phase. The crystallite size was almost constant by increasing the Br concentration up to 25%. Optical measurements showed a linear increase of the energy band gap by increasing the Br concentration, leading to the blue shift of the absorption onset. Scanning electron microscopy images showed the formation of the needle-like shapes. The grain size evolution is explained basing on the current studies.

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来源期刊

Surface Engineering and Applied Electrochemistry Engineering-Industrial and Manufacturing Engineering

CiteScore

1.60

自引率

22.20%

发文量

期刊介绍： Surface Engineering and Applied Electrochemistry is a journal that publishes original and review articles on theory and applications of electroerosion and electrochemical methods for the treatment of materials; physical and chemical methods for the preparation of macro-, micro-, and nanomaterials and their properties; electrical processes in engineering, chemistry, and methods for the processing of biological products and food; and application electromagnetic fields in biological systems.