| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
|
|---|
| Outline of Final Research Achievements |
Optical excitation in semiconductors generates electrons and holes and the Coulomb attraction causes formation of the electron-hole bound state what we call exciton. In a monolayer transition-metal dichalcogenide, the exciton plays a dominant role in its optical response because there is no dielectric environment giving rise to screening outside the two-dimensional electronic system. In this study, we have developed a theoretical method to evaluate the dynamical screening effect for excitons. We calculated exciton absorption spectra under several types of dielectric material such as organic solvents and compound semiconductor substrates and discussed the control of optical responses.
|
