Research Interests
1. Gas Sensors
- Highly sensitive nonpolar and semi-polar GaN hydrogen sensors using photo-chemical etching was developed.
- Hydrothermally grown a-plane ZnO hydrogen sensor was demonstrated.
- AlGaN/GaN HEMT based hydrogen sensors using Pt nano-networks with large surface to volume ratio were developed.
- Dependence of crystal plane and polarity in GaN on hydrogen sensing was investigated.
2. Light Emitting Diodes
- Nonpolar a-plane n-type ZnO (grown by facile solution method) / p-GaN hybrid LED was realized.
- Organic LED with improved cryogenic LiF/Al electrode was developed.
- Self-annealing process of neutron irradiated InGaN/GaN LEDs was investigated.
3. GaN based RF and Power Devices
- Degradation mechanisms of AlGaN/GaN high electron mobility transistor (HEMT) were elucidated.
- Effects of neutron and proton irradiation on GaN based HEMTs were investigated.
- Enhancement mode GaN metal oxide semiconductor (MOSFET) using Si diffusion was developed.
4. InGaAs based Photodetectors
- Optimal design of InGaAs based metal semiconductor metal (MSM) photodector was established.
- Effect of transparent ITO electrode on MSM photodetector was investigated.
국가
대한민국
소속기관
단국대학교 (학교)
연락처
031-8005-3623 https://sites.google.com/site/dkujanglab/
책임자
장수환 jangmountain@dankook.ac.kr