Study of thin film prparation on single crystal substrates and development of function as light emitting materials

用x射线光电子能谱（XPS）和紫外光电子能谱（UPS）对特高压体系中Si（111）单晶-1-甲醇和甲醛的吸附进行了表征。在123K时观察到甲氧基物质，673K时分解。甲醛在室温下解离吸附。随着温度的升高，c1s结合能（BE）逐渐变小，表明CH_3脱氢为CH_2和/或CH。当温度恢复到室温时，c1s BE值变大，表明CH和/或CH_2的氢化反应仍在表面。甲氧基物质经UPS源（He-II 40.8eV）光分解。这一结果暗示了表面残留物质作为粘合剂在固体表面接枝有机薄膜的可能性。开发了-2-A复分解催化剂以获得新的功能聚合物。合成了更络合物的均相芳基（氯）新戊二烯钨，并发现其对含硫烯烃的复分解反应具有催化活性。利用交叉复分解和开环聚合，研制含硫聚合物成为现实。聚合物的制备在导电材料和光功能材料中得到了广泛的应用，但由于所获得的聚合物数量较少而未能成功。用Nd: YAG脉冲激光FHG观察了CDWO_4（010）的-3激光烧蚀。用x射线衍射和电子探针显微分析（EPMA）对Si（111）上发射的粒子形成的薄膜进行了分析。获得了Cd/W比为几%的镉缺陷膜，并观察了WO_3（002）表面。随着角rheta的增大，膜中的Cd/W比减小，其中rheta定义为从法线到CdWO_4表面的夹角。在O_2的存在下制备膜时，其化学计量比增大，但必须在O_2的高压下才能得到。得到的薄膜到目前为止还没有发光。提高Cd/W比和阐明发射粒子的角分布是必要的。少

-1-Methanol and formaldehyde adsorption were carried out on Si(111) single crystals in a UHV systems, which were elucidated with X-ray photoelectron spectroscopy (XPS) and ultraviolet photoelecteron spectroscopy (UPS). Methoxy species was observed at 123K and was decomposed over 673K.Fromaldehyde was dissociativoly adsorbed at room temperature(r.t.). With increasing temperature C 1s binding energy (BE) was gradually shifted to a lower value, which suggeses the dehydrogenation of CH_3 to CH_2 and/or CH species. When temperature was back to r.t., C 1s BE value shifted to a higher one, which implies the hydrogenation of CH and/or CH_2 species with hydrogen remained on the surface. Methoxy species was photodecomposed by UPS source (He-II 40.8eV). This result implies the possibility of surface remaing species acting as binder to graft organic films on solid surfaces.-2-A metathesis catalysts was developed to obtain new functional polymers. Homogeneous aryloxo(chloro)neopentylidene tungsten … More complex was synthesized and was found to show catalytic activity for metathesis reaction of sulfur containing olefins. Using cross metathesis and ring opening polymerization, development of sulfur containing polymers became practical. Filming the polymers reached us application to conducting and opto functional materials, however it was unsuccessful because of the quantity of polymer obtained.-3-Laser ablation is observed on CDWO_4(010) using FHG of Nd : YAG pulsed laser. Thin film obtained from the particles emitted on Si(111) was analyzed with X-ray diffraction and electron probe micro analysis (EPMA). Cadmium dificient film with a Cd/W ratio of a few % was obtained and WO_3(002) face was observed. The Cd/W ratio in the film decreased as the angle rheta increases, where rheta is defined as the angle from normal to the CdWO_4 surface. The ratio increased when the film was prepared in the presence of O_2, however it was suggested that high pressure of 0_2 was necessary to get the stoichiometric ratio. Obtained films have not shown luminescence so far. Improvement of the Cd/W ratio and elucidation of angular distribution of emitted particles are thought to be necessary. Less