Carbon Dioxide Sensing Characteristics of AlGaN/GaN High Electron Mobility Transistor with ZnO Nanorods

Hydrogen sensing properties of a metamorphic high electron mobility transistor

transistor Tsung-Han Tsai, Huey-Ing Chen, Chung-Fu Chang, Po-Shun Chiu, Yi-Chun Liu, Li-Yang Chen, Tzu-Pin Chen, and Wen-Chau Liu Institute of Microelectronics, Department of Electrical Engineering, National Cheng-Kung University, 1 University Road, Tainan, Taiwan 70101, Republic of China Department of Chemical Engineering, National Cheng-Kung University, 1 University Road, Tainan, Taiwan 70101...

SnO2 functionalized AlGaN/GaN high electron mobility transistor for hydrogen sensing applications

In this study, we report on a demonstration of hydrogen sensing at low temperature using SnO2 functionalized AlGaN/GaN high electron mobility transistors (HEMT). The SnO2 dispersion was synthesized via a hydrothermal method and selectively deposited on the gate region of a HEMT device through a photolithography process. The high electron sheet carrier concentration of nitride HEMTs provides an ...

Surface morphology of Al0.3Ga0.7N/Al2O3-high electron mobility transistor structure.

We present surface properties of buffer films (AIN and GaN) and Al0.3Gao.zN/Al2O3-High Electron Mobility Transistor (HEMT) structures with/without AIN interlayer grown on High Temperature (HT)-AIN buffer/Al2O3 substrate and Al2O3 substrate. We have found that the GaN surface morphology is step-flow in character and the density of dislocations was about 10(8)-10(9) cm(-2). The AFM measurements a...

MOCVD growth of GaN-based high electron mobility transistor structures

Embedded ZnO nanorods and gas-sensing properties

Regular hexagonal embedded ZnO nanorods were successfully prepared by a simple hydrothermal method. The addition of urea as a homogeneous precursor was found to play a vital role in the embedding of secondary nanorods. The nanostructures were characterized by XRD, SEM, and EDS. The gas-sensing properties of secondary grown embedded nanorods were reported for formaldehyde, ethanol, methanol, ace...