中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Control of crystallographic orientation in diamond synthesis through laser resonant vibrational excitation of precursor molecules

文献类型:期刊论文

作者Xie, ZQ ; Bai, J ; Zhou, YS ; Gao, Y ; Park, J ; Guillemet, T ; Jiang, L ; Zeng, XC ; Lu, YF
刊名SCIENTIFIC REPORTS
出版日期2014
卷号4
关键词CHEMICAL-VAPOR-DEPOSITION CVD DIAMOND FILMS GROWTH NITROGEN NUCLEATION SURFACES DEFECTS TEXTURE SILICON
ISSN号2045-2322
通讯作者xzeng1@unl.edu ; ylu2@unl.edu
英文摘要Crystallographic orientations determine the optical, electrical, mechanical, and thermal properties of crystals. Control of crystallographic orientations has been studied by changing the growth parameters, including temperature, pressure, proportion of precursors, and surface conditions. However, molecular dynamic mechanisms underlying these controls remain largely unknown. Here we achieved control of crystallographic orientations in diamond growth through a joint experimental and theoretical study of laser resonant vibrational excitation of precursor molecules (ethylene). Resonant vibrational excitation of the ethylene molecules using a wavelength-tunable CO2 laser steers the chemical reactions and promotes proportion of intermediate oxide species, which results in preferential growth of {100}-oriented diamond films and diamond single crystals in open air. Quantum molecular dynamic simulations and calculations of chemisorption energies of radicals detected from our mass-spectroscopy experiment provide an in-depth understanding of molecular reaction mechanisms in the steering of chemical reactions and control of crystallographic orientations. This finding opens up a new avenue for controlled chemical vapor deposition of crystals through resonant vibrational excitations to steer surface chemistry.
收录类别SCI
语种英语
WOS记录号WOS:000333797300008
公开日期2015-03-13
源URL[http://ir.sinap.ac.cn/handle/331007/14053]  
专题上海应用物理研究所_中科院上海应用物理研究所2011-2017年
推荐引用方式
GB/T 7714
Xie, ZQ,Bai, J,Zhou, YS,et al. Control of crystallographic orientation in diamond synthesis through laser resonant vibrational excitation of precursor molecules[J]. SCIENTIFIC REPORTS,2014,4.
APA Xie, ZQ.,Bai, J.,Zhou, YS.,Gao, Y.,Park, J.,...&Lu, YF.(2014).Control of crystallographic orientation in diamond synthesis through laser resonant vibrational excitation of precursor molecules.SCIENTIFIC REPORTS,4.
MLA Xie, ZQ,et al."Control of crystallographic orientation in diamond synthesis through laser resonant vibrational excitation of precursor molecules".SCIENTIFIC REPORTS 4(2014).

入库方式: OAI收割

来源:上海应用物理研究所

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