2014 Fiscal Year Final Research Report
Demonstration of ultra-high speed light emitters and detectors for visible light communication
| Project/Area Number |
24360140
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Partial Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Electron device/Electronic equipment
|
|---|
| Research Institution | Meijo University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2012-04-01 – 2015-03-31
|
| Keywords | GaN / LED / フォトセンサー / 可視光通信 / PLZT / 光取り出し効率 / 高速変調 / カー効果 |
|---|
| Outline of Final Research Achievements |
The aims of this study are to realize high-efficiency nitride-based blue LEDs, to demonstrate high-speed optical modulation by an external oscillator, and to demonstrate high-sensitivity HFET type photosensors. A blue LED with light extraction efficiency of 70 % has been achieved by applying the moth-eye-patterned sapphire substrate. Light modulation by an external modulator with Kerr effect in PLZT thin film has been confirmed by FDTD simulation, and deposition condition for the perovskite-phase PLZT thin film was fixed. Super sensitive HFET-type photosensors, whose sensitivity is four orders of magnitude higher than conventional pin photodiode, are also realized.
|
| Free Research Field |
半導体工学
|
