High Sensitivity Gas Sensor Based on Porous GaN Nanorods with Excellent High-Temperature Stability

In this paper, porous GaN nanorods are prepared successfully by hydrothermal method and are applied for gas sensor via a simple process. Gas-sensing measurements demonstrate that the sensor based on porous GaN exhibits high sensitivity and good selectivity to ethanol, which also shows a fast response/recovery time. Furthermore, the sensor presents excellent stability at high temperature of 360 °C. Our study provides a promising route for the fabrication of porous GaN-based sensitive materials for gas sensors with high-performance.