2PPE-PEEM study on substrate mediated molecular excitaion
| Project/Area Number |
25600004
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Nanostructural chemistry
|
|---|
| Research Institution | Osaka University |
|---|
Principal Investigator |
MUNAKATA Toshiaki 大阪大学, 理学(系)研究科(研究院), 教授 (20150873)
|
|---|
| Project Period (FY) |
2013-04-01 – 2015-03-31
|
| Project Status |
Completed (Fiscal Year 2014)
|
| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
|
|---|
| Keywords | ナノ材料 / ルブレン / グラファイト / 光励起 / 光電子分光 / 光電子放射電子顕微鏡 / 表面界面物性 |
|---|
| Outline of Final Research Achievements |
Two-photon photoemission (2PPE) from rubrene films on graphite (HOPG) has been measured with a photoelectron emission microscope (PEEM) as functions of pump photon energy and coverage. The image potential state mediated excitation (J. Phys. Chem. C 2012, 116, 5821) is found to occur at specific areas (denoted as resonance areas) surrounded with areas of the uniform film of one monolayer (ML) coverage. The brightness of the resonance areas for sub-ML coverage shows clear resonance enhancement peaking at the pump photon energies of 4.4 eV. The area vanishes at coverage higher than 1 ML. The intensity profiles show that the resonance area is composed of bare graphite and nm-size clusters or isolated rubrene molecules. The specific area dominates the 2PPE process, exemplifying the significant role of defective areas in photoexcitation processes.
|
Report
(3 results)
Research Products
(48 results)
-
-
-
-
-
-
-
-
-
[Presentation] 有機薄膜での電子励起と緩和過程2015
Author(s)
宗像利明
Organizer
日本物理学会第70回年次大会
Place of Presentation
早稲田大学 早稲田キャンパス(東京都)
Year and Date
2015-03-21 – 2015-03-24
Related Report
Invited
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] ルブレン薄膜/ 基板界面における電子励起過程2014
Author(s)
上羽貴大, 西村史也, 國枝省吾, 渡辺悠, 坂上このみ, 寺脇理恵, 山田剛司, 加藤浩之, 宗像利明
Organizer
第9回有機デバイス院生研究会
Place of Presentation
九州大学伊都キャンパス稲盛財団記念館（福岡県）
Year and Date
2014-06-18 – 2014-06-20
Related Report
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
