PROPERTIES AND STRUCTURE OF C60 AND HIGHER-FULLERENE THIN FILMS

C60和高富勒烯薄膜的性能和结构

• 批准号: 04650047
• 负责人: SAITO Yahachi
• 金额: $ 1.34万
• 依托单位: MIE UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04650047/
• 关键词: Carbon Cluster; Fullerene; Thin Films; Crystal Structrue; Epitaxial; Electronic Structure; Optical Property

C_<60>, C_<70>, C_<76> and C_<84> purified by liquid chromatography were evaporated in vacuum from a molybdenum boat (evaporation source) and deposite on solid surfaces such as NaCl, mica and quartz.1. Electron microscopy of fullerene thin filmsOn mica substrate, all the fullerenes studied formed epitaxitally grown single-crystalline films with the fcc structure. The lattice constants of the fcc-fullerites change linearly with the square root of the number of carbon atoms constituting a fullerene. On the other hand, fullerene films grown on NaCl were polycrystalline. The structures were the fcc when the substrate was held at elevated temperature, otherwise a hcp structure was dominant.2. Electronic structures and optical properties of fullerene filmsElectron energy loss spectroscopy revealed that the band gaps of C_<60>, C_<70>, C#76 and C_<84> were 1.7, 1.8, 1.3 and 1.2 eV, respectively. Optical absorption and emission studies showed optical properties inherent in fullerenes such as large third-order nolinear response.

用液相色谱法提纯的C_<60>、C_、C_<70>、C_<76>和C_<84>，在钼舟（蒸发源）上真空蒸发，并沉积在固体表面如NaCl、云母和石英上.富勒烯薄膜的电子显微镜研究结果表明，在云母衬底上，所有富勒烯都形成了具有面心立方结构的单晶薄膜。fcc富勒烯的晶格常数随构成富勒烯的碳原子数的平方根线性变化。另一方面，在NaCl上生长的富勒烯薄膜是多晶的。当衬底温度升高时，薄膜的结构为面心立方结构，而当衬底温度升高时，薄膜的结构以六方晶系为主.富勒烯薄膜的电子结构和光学性质电子能量损失谱表明，C_<60>，C_<70>，C#76和C_的带隙<84>分别为1.7，1.8，1.3和1.2eV。光学吸收和发射的研究表明，在富勒烯固有的光学特性，如大的三阶非线性响应。

项目成果

Yahachi Saito: "Fivefold Twinned C_<60> Crystals Grown by Vacuum Deposition" Phys.Rev.B. 46. 1846-1848 (1992)

Yahachi Saito：“通过真空沉积生长的五重孪晶 C_<60> 晶体”Phys.Rev.B。

Jun Kawai: "Discrete-variational-Xα Calculations of Buckminster-fullerene(C_<60>)and Fulleride X-Ray Emission Spectra" J.Chem.Phys.98. 3650-3655 (1993)

Jun Kawai：“巴克明斯特富勒烯 (C_<60>) 和富勒烯 X 射线发射光谱的离散变分 Xα 计算”J.Chem.Phys.98 (1993)。

Y.Saito: "Synthesis, Structure and Properties of C60 Clusters (in Japanese)" Kagaku-Kohgyo. 44. 390-397 (1993)

Y.Saito：“C60 簇的合成、结构和性质（日语）” Kagaku-Kohgyo。

Yahachi Saito: "Electron Microscopy,Electron Energy Loss and X-ray Emission Spectroscopy of Solid C_<60> and C_<70>" Physics and Chemistry of Finite Systems:From Clusters to Crystals. 2. 1365-1370 (1992)

Yahachi Saito：“固体C_<60>和C_<70>的电子显微镜、电子能量损失和X射线发射光谱”有限系统的物理和化学：从簇到晶体。

Yahachi Saito: "Electron Microscopy of Fullerene Thin Films Grown on Solid Surfaces" Mater.Sci.& Eng.B. 19. 18-24 (1993)

Yahachi Saito：“在固体表面上生长的富勒烯薄膜的电子显微镜”Mater.Sci。