2013 Fiscal Year Final Research Report
Development of practical method for preparation of organic tin films with azimutal orientation by use of anisotropic interface
| Project/Area Number |
23560019
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Thin film/Surface and interfacial physical properties
|
|---|
| Research Institution | Chiba University |
|---|
Principal Investigator |
OKUDAIRA Koji 千葉大学, 融合科学研究科(研究院), 准教授 (50202023)
|
|---|
| Project Period (FY) |
2011 – 2013
|
| Keywords | ナノ構造 / 分子配向 / 界面 |
|---|
| Research Abstract |
The conduction mechanism of organic devices depends on not only organic semiconductor but also the molecular orientation. In the research we prepare the micro-structured substrates which have groove structure with width of several micro-meter. We observed NEXAFS spectra of the PTFE (polytetrafluoroethylene) film on this micro-structured substrate. From the results of NEXAFS spectra we can show that PTFE molecules have uniaxial molecular orientation where the C-C axis of PTFE is parallel to the groove direction. It is found that pentacene thin films on the uniaxially oriented PTFE substrate have anisotropic orientation by angle-resolved ultraviolet photoelectron spectra. Furthermore, we found that highly anisotropic orientation is achieved by using the substrate with highly ordered groove structure with width of several hundreds nanometer.
|
