Microscopic Mechanisms of Chemical Reactions on Semiconductor Surface

半导体表面化学反应的微观机制

• 批准号: 11305005
• 负责人: NISHIJIMA Mitsuaki
• 金额: $ 25.79万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11305005/
• 关键词: STM; EELS; silicon; diamond; surface reaction; single crystal; 真空; 半導体表面; 表面

1. Study on the diamond surfaceThe structure, electronic states, vibrational states and chemical reactivity of the C(100) surface have been studied by low-energy electron diffraction, high resolution electron energy loss spectroscopy and thermal desorption spectroscopy. In particular, the Diels-Alder reaction was observed to occur on C(100) for the first time. Extending the present works, it can be predicted that any other conjugated dienes with suitable symmmetry react with the C(100) surface.2. Study on the silicon surface(1) The surface phonons of the Si(100)(2x1) surface have been studied by the use of high resolution electron energy loss spectroscopy. Losses related to the surface dimer motions are observed. In particular, the 20 meV loss attributed to the dimer-rocking mode asociated with the dimer buckling was observed for the first time. The Rayleigh phonons are observed in resonance with the projected density of states of bulk phonons. Comparison between the experimental results and lattice dynamical calculations were made.(2) The oxygen-Si(111)7x7 surface interactions were studied, by the use of scanning tunneling microscopy, in the temperature region between 10 and 300 K. New informations were obtained on the behaviors of unstable reaction intermediates.

1。通过低能量电子衍射，高分辨率电子能损失光谱和热解术光谱学研究了C（100）表面的钻石表面结构，电子状态，振动状态和化学反应性。特别是，第一次观察到Diels-Alder反应发生在C（100）上。扩展当前的作品，可以预测，任何其他具有合适符号的共轭二烯与C（100）表面反应。2。通过使用高分辨率电子损失光谱法研究了对硅表面（1）Si（100）（2x1）表面的表面声子的研究。观察到与表面二聚体运动有关的损失。特别是，第一次观察到与二聚体屈曲相关的二聚体摇滚模式所归因于二聚体摇滚模式。与散装声子的预测密度共振时观察到瑞利声子。 （2）通过使用扫描隧道显微镜在10到300 k的温度区域中研究了氧气SI（111）7x7表面相互作用之间的比较。在10到300 k之间。

项目成果

H.Yanagita: "Vilrational spectra 7 H on Rh(111)"Surf. Sci.. 441. 507-514 (1999)

H.Yanagita：“Rh(111) 上的 Virrational 光谱 7 H”Surf。

M.Z.Hassain: "Surface Phonons, electronic structure and chemical reactivity of C(100)2x1"Jpn. J. Appl. Phys.. 38. 6659-6666 (1999)

M.Z.Hassain：“C(100)2x1 的表面声子、电子结构和化学反应性”Jpn。

M.Z. Hossain: "Adsorbed States of K on the Diamond (100)2x1 Surface"Diamond Relat. Mater.. 9. 162-169 (2000)

M.Z.

M.Z.Hossain: "Chemisorption of O_2 and CO m K-modified C(100)"Diamond Relat. Mater.. 10. 2049-2056 (2001)

M.Z.Hossain：“K-modified C(100) 中 O_2 和 CO 的化学吸附”Diamond Relat。

H.Okuyama: "Overtones of H vibrations at Ni(111)"Phys.Rev.B. 63. 233403-1-233403-4 (2001)

H.Okuyama：“Ni(111) 处 H 振动的泛音”Phys.Rev.B。