2012 Fiscal Year Final Research Report
Development of Phosphorescent Polymer Light-Emitting Transistors Using Liquid Crystalline by
| Project/Area Number |
23656218
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Electronic materials/Electric materials
|
|---|
| Research Institution | Osaka University |
|---|
Principal Investigator |
KAJII Hirotake 大阪大学, 大学院・工学研究科, 助教 (00324814)
|
|---|
| Project Period (FY) |
2011 – 2012
|
| Keywords | 電子・電気材料 / 電子デバイス / 有機導体 / 分子性固体 / 光物性 / 有機発光トランジスタ |
|---|
| Research Abstract |
In order to obtain phosphorescent emission from organic field-effect transistors, thermal diffusion of a phosphorescent dye at the interface between the active layer and gate insulator was controlled by utilizing the fact that liquid-crystalline semiconducting polymers self-organize due to reorientation of the molecules and increase in the size of the crystalline regions during thermal annealing. For top-gate type devices using poly(alkylfluorene) doped with a red emissive phosphorescent material, ambipolar characteristics and red emission from the phosphorescent material were clearly observed. We demonstrate the possibility of producing phosphorescent organic light-emitting transistors using a liquid-crystalline semiconducting polymer doped with phosphorescent emissive dopants by the thermal diffusion method.
|
