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arXiv 2108.00877cond-mat.mtrl-sci
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CsPbBr3立方块体和001表面的光电和电子性质

Optoelectronic and Electronic properties of cubic bulk and 001 surface of CsPbBr3

H. Joshi, R. K. Thapa, Lalrinthara Pachuau, Lalmuanpuia Vanchhawng, D. P. Rai

摘要:

利用第一性原理计算对CsPbBr 3的立方体及其(001)面进行了计算,揭示了其电子和光电性质.各种计算方案,如GGA,GGA+SOC和高精度的修正贝克约翰逊势(mBJ)的应用。从mBJ得到的电子能带隙的计算结果与现有的实验结果接近。立方体相的机械稳定性进行了研究,并发现绕过其他结构相。体相和表面的光吸收都超过了非铅基立方卤化物和锌基有机-无机杂化物。

英文摘要:

First Principles calculations are performed on the cubic bulk and its (001) surface of CsPbBr3 to reveal its electronic and optoelectronic properties. Various calculation schemes like GGA, GGA+SOC and the highly accurate modified Becke Johnson potential (mBJ) are applied. The electronic energy band gap calculations obtained from mBJ shows close approximity with the available experimental results. The cubic bulk phase is investigated for its mechanical stability and is found to bypass other structural phases. The optical absorption of both the bulk and the surface surpasses non-lead based cubic halides and zinc-based organic-inorganic hybrids.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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