2011 Fiscal Year Final Research Report
Imaging and single-molecule detection of interfacial electron transfer molecules through photo-induced tunneling current
| Project/Area Number |
23655007
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Physical chemistry
|
|---|
| Research Institution | Shizuoka University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2011
|
| Keywords | 色素増感太陽電池 / 光誘起電流 / 顕微分光 |
|---|
| Research Abstract |
We have tried to develop a new methodology for realizing the imaging of adsorbed molecules prosecuting efficient electron transfer at metal oxide semiconductor interfaces. Photo-induced current measurements were performed for dye-sensitized solar cells having nanostructured TiO_2 electrodes covered with the Ru(II)-based sensitizers, and we confirmed that weak photoinduced current signals of several nA were highly discernible. The photocurrent measurement was successfully combined with the 2D raster scan of a diffraction-limited laser focal spot. We thereby established the basis of a photoinduced current microscopy toward the single-molecule detection of ultrafast electron transfer adsorbates.
|
