Stability enhancement and electronic tunability of two-dimensional SbIV compounds via surface functionalization

Stability enhancement and electronic tunability of two-dimensional SbIV compounds via surface functionalization
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通过表面功能化增强二维 SbIV 化合物的稳定性和电子可调性

DOI:
10.1016/j.apsusc.2017.08.208
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发表时间:
2018
影响因子:
6.7
通讯作者:
Zhang Shengli
Zhang Shengli
中科院分区:
材料科学1区
文献类型:
--
作者:
Zhou Wenhan;Guo Shiying;Liu Xuhai;Cai Bo;Song Xiufeng;Zhu Zhen;Zhang Shengli

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我们提出了一类氢化和卤化SbIV(SbIVX-2)材料,它同时具有二维(2D)结构、高稳定性和吸引人的电子性质。基于第一性原理总能量和振动光谱计算,发现SbIVX-2单分子膜在热力学和动力学上都是稳定的。改变IV和X元素可以合理地调节SbIVX-2单分子膜的电子性质,有效地将禁带宽度从0调制到3.42 eV。由于SbIVX-2具有良好的稳定性和宽禁带范围,有望在实验中合成SbIVX-2单层膜,作为蓝光至紫外光发光二极管(LED)和光电探测器等低维电子和光电器件的候选材料。
We propose a family of hydrogenated- and halogenated-SbIV (SbIVX-2) materials that simultaneously have two-dimensional (2D) structures, high stability and appealing electronic properties. Based on first-principles total-energy and vibrational-spectra calculations, SbIVX-2 monolayers are found both thermally and dynamically stable. Varying IV and X elements can rationally tune the electronic properties of SbIVX-2 monolayers, effectively modulating the band gap from 0 to 3.42 eV. Regarding such superior stability and broad band-gap range, SbIVX-2 monolayers are expected to be synthesized in experiments and taken as promising candidates for low-dimensional electronic and optoelectronic devices, such as blue-to-ultraviolet light-emitting diodes (LED) and photodetectors.
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