Facet stability of GaN during tri-halide vapor phase epitaxy: an ab initio-based approach
Facet stability of GaN during tri-halide vapor phase epitaxy: an ab initio-based approach
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三卤化物气相外延过程中 GaN 的面稳定性:一种从头算的方法
DOI:
10.1039/d0ce01683g
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发表时间:
2021
期刊:
影响因子:
3.1
通讯作者:
Koukitu Akinori
中科院分区:
文献类型:
--
作者:
Yosho Daichi;Matsuo Yuriko;Kusaba Akira;Kempisty Pawel;Kangawa Yoshihiro;Murakami Hisashi;Koukitu Akinori
An ab initio-based approach is used to investigate the facet stability of GaN during tri-halide vapor phase epitaxy (THVPE). First, surface reconstructions are analyzed to create surface phase diagrams as a function of the gaseous pressure and temperature. Next, a triangular wedge model is used to compute absolute surface formation energies with the bulk state as a reference. A Wulff construction is used to predict the crystal growth form composed of energetically preferred facets. The calculated results can be used to control the shape of GaN grown by THVPE.
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DOI:
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