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arXiv 0907.5251cond-mat.mtrl-sci
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III-a族氮化物薄膜电子性质的分子模拟

Electronic Properties of Group III-a Nitride Sheets by Molecular Simulation

E. Chigo Anota, M. Salazar Villanueva, H. Hernandez Cocoletzi

摘要:

我们已经进行了第一性原理总能量计算,以研究新型N12 X12 H12(X=B,Al,Ga,In,TI)氮化物的结构和反应性参数,在它们的晕苯类(C24 H12)结构来模拟这些片。在广义梯度近似(GGA)和Perdew-Wang和Perdew-Burke-Ernzerhof(PWC,PBE)参数化中的局域密度近似以及双极化原子基(DNP)中处理交换和关联势能。报道了它们的化学势、硬度、亲电指数和键长。结构的键长与体相的键长相似。HOMO和LUMO之间的带隙从BN(5.18eV)减小到TlN(1.76eV)。同时,除了TlN之外,极性增加。

英文摘要:

We have performed first principles total energy calculations to investigate the structural and reactivity parameters of novel N12X12H12 (X=B, Al, Ga, In, TI) nitrides, in their coronene-like (C24H12) structure to simulate these sheets. The exchange and correlations potential energies are treated in the generalized gradient approximation (GGA), and the local density approximation within the parameterization of Perdew-Wang and Perdew-Burke-Ernzerhof (PWC, PBE) and the doubly polarized atomic base (DNP). The chemical potential, hardness and electrophilicy index, as well as bond length are reported. The bond length of the structures is similar to the bulk. The gap between the HOMO and LUMO decreases from BN (5.18eV) to TlN (1.76 eV). At the same time, the polarity increases except for TlN.

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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