不同方法对钙钛矿晶体尺寸和带隙的比较研究

IF 1.5 4区物理与天体物理 Q3 PHYSICS, CONDENSED MATTER

Advances in Condensed Matter Physics Pub Date : 2022-05-17 DOI:10.1155/2022/9535932

M. T. Ahmed, S. Islam, Fannana Ahmed

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引用次数: 5

摘要

本研究证明了通过反溶剂加成快速合成CH3NH3PbBr3钙钛矿粉末，并进一步采用一步自旋镀膜法合成薄膜。通过x射线衍射、傅里叶变换红外光谱和紫外可见光谱对其结构和光学性质进行了研究。通过三种不同的尺寸估计技术比较了晶体尺寸，其范围在95.8 nm到105 nm之间。钙钛矿的吸收系数在104 cm−1以上，可见光谱的折射率在3.4 ~ 2.3之间。通过三区方法估计了带隙，发现带隙在2.29 eV - 2.32 eV范围内变化很小。

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Comparative Study on the Crystallite Size and Bandgap of Perovskite by Diverse Methods

This research demonstrates the fast synthesis of CH3NH3PbBr3 perovskite powder via antisolvent addition and further thin-film synthesis by one-step spin coating. The structural and optical properties are investigated via X-ray diffraction, Fourier-transform infrared spectroscopy, and UV–Vis spectroscopy. Crystallite sizes are compared by three different size estimation techniques, which range between 95.8 nm and 105 nm. The perovskite showed a higher absorption coefficient over 104 cm−1 and a refractive index from 3.4 to 2.3 in the visible spectrum. The bandgap was estimated via three district methods, which revealed a very slightly varied bandgap in the range of 2.29 eV–2.32 eV.

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来源期刊

Advances in Condensed Matter Physics PHYSICS, CONDENSED MATTER-

CiteScore

2.30

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Advances in Condensed Matter Physics publishes articles on the experimental and theoretical study of the physics of materials in solid, liquid, amorphous, and exotic states. Papers consider the quantum, classical, and statistical mechanics of materials; their structure, dynamics, and phase transitions; and their magnetic, electronic, thermal, and optical properties. Submission of original research, and focused review articles, is welcomed from researchers from across the entire condensed matter physics community.