Orientation Control of Organic Conductor Thin Films by Magnetic Field

磁场控制有机导体薄膜的取向

基本信息

批准号：
12640551
负责人：
YOSHIMOTO Noriyuki
金额：
$ 1.34万
依托单位：
Iwate University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2001
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12640551/
关键词：
organic thin film orientation control magnetic filed organic conductors molecular design 分子デバイス

项目摘要

Although well-oriented thin films of organic conductors are demanded for progress in molecular electronic devices, the orientation control of thin films of organic conductors have not been accomplished. The difficulty in the structural analysis of organic thin films is one of the bottlenecks to obtain the well-oriented organic conducting thin films. In this study, we have precisely determined the in-plane orientations of the epitaxial thin films of BEDT-TTF, perylene and p-sexiphenyl formed on the KCl (001) NaCl, and KBr (001) by using X-ray diffraction. In-plane crystal orientations of eptaxial organic thin films were investigated using a newly developed X-ray diffractometer. Organic materials was deposited onto KCl, NaCl and KBr substrates in vacuum. The obtained thin films were analyzed by using the X-ray difrractometer. The theta/2thata symmetry scan suggested that BEDT-TTF crystals in the thin films oriented in the relation of (10-2) BEDT-TTF // (001) KCl. Using this information, 03-2 asymmetry reflections that include the information of the in-plane orientations were searched as a function of rotation angle (φ) of a normal vector to the substrate surface (Fig.1). Consequently, the 03-2 reflections were successfully measured. From the measured directions of the diffraction vectors, it was determined that the in-plane epitaxial relationship of BEDT-TTF and KCl substrate is <211>_<BEDT-TTF> // <110>_<KCl>. The effects of magnetic filed on in-plane orientation of organic films were also examined.

尽管需要在分子电子设备中进行有机导体的良好导向的薄膜，但尚未完成有机导体的薄膜的方向控制。有机薄膜的结构分析中的困难是获得良好的有机传导薄膜的瓶颈之一。在这项研究中，我们通过使用X射线衍射精确地确定了在KCl（001）NaCl（001）NaCl（001）NaCl（001）NaCl（001）NaCl（001）NaCl（001）上形成的BedT-TTF，Perylene和P-乳腺基因的外延薄膜的面内方向。使用新开发的X射线衍射仪研究了静脉有机薄膜的平面晶体方向。将有机材料沉积在真空中的KCl，NaCl和KBR底物上。使用X射线差异计分析获得的薄膜。 theta/2tha对称扫描表明，在（10-2）bedt-ttf //（001）KCl的关系中，薄膜中的BedT-TTF晶体。使用此信息，搜索了包括平面方向信息的03-2不对称反射，这是正常矢量与基板表面的旋转角（φ）的函数搜索的（图1）。因此，成功测量了03-2反射。从衍射向量的测得方向上，确定BEDT-TTF和KCl底物的平面外延关系为<211> _ <bedt-ttf> // <110> _ <kcl>。还检查了磁对有机膜的面内方向的影响。