| Presentation | 2009-09-03 Carrier and electric field distribution in organic FET studied by the microscopic SHG and Raman imaging Takaaki Manaka, Satoshi Kawashima, Yasuyuki Tanaka, Mitsumasa Iwamoto, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Since current flowing in the materials is expressed as J=enμE, evaluation of each parameters, i.e., carrier density (en), mobility (μ) and electric field (E), is of great importance to discuss the device operation from a fundamental point of view. Recently, we have developed a procedure for evaluating electric field distribution in the organic thin-film transistors (OTFT) on the basis of the electric field induced SHG. Using this method, electric field distribution in the OFET could be evaluated with high spatial resolution. In this study, Raman imaging is conducted to observe the injected carrier distribution in the OTFT. It was found that Raman distribution strongly depends on the bias condition. And interestingly, large Raman signal was observed at source edge, and it decreased along the channel toward drain electrode at the on state of the OTFT. This clearly reflects the carrier distribution in the channel under the device operation. Well-known current equation J=enμE indicates that the carrier density and the electric field has a complementally relation, whdn mobility is constant. In the presentation, relationship between the carrier density and the electric field those are respectively evaluated by the Raman and SHG measurements will be discussed. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Optical second harmonic generation / Raman spectroscopy / Organic FET / Carrier distribution / Electric field distribution |
| Paper # | OME2009-38 |
| Date of Issue |
| Conference Information | |
| Committee | OME |
|---|---|
| Conference Date | 2009/8/27(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Organic Material Electronics (OME) |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Carrier and electric field distribution in organic FET studied by the microscopic SHG and Raman imaging |
| Sub Title (in English) | |
| Keyword(1) | Optical second harmonic generation |
| Keyword(2) | Raman spectroscopy |
| Keyword(3) | Organic FET |
| Keyword(4) | Carrier distribution |
| Keyword(5) | Electric field distribution |
| 1st Author's Name | Takaaki Manaka |
| 1st Author's Affiliation | Department of Physical Electronics, Tokyo Institute of Technology() |
| 2nd Author's Name | Satoshi Kawashima |
| 2nd Author's Affiliation | Department of Physical Electronics, Tokyo Institute of Technology |
| 3rd Author's Name | Yasuyuki Tanaka |
| 3rd Author's Affiliation | Department of Physical Electronics, Tokyo Institute of Technology |
| 4th Author's Name | Mitsumasa Iwamoto |
| 4th Author's Affiliation | Department of Physical Electronics, Tokyo Institute of Technology |
| Date | 2009-09-03 |
| Paper # | OME2009-38 |
| Volume (vol) | vol.109 |
| Number (no) | 184 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |