The NO2 gas sensor on silicon substrate is fabricated by microelectronic mechanical system(MEMS) technology with CuPc as the thin film.The sensitive mechanism is explained from the semiconductor theory.The configuration and technological process of the sensor are described.The sensitivity
temperature characteristic
response and recovery time are tested.Experiment results confirm with the nitrogen dioxide-sensitive mechanism of the sensor
and the MEMS sensor can respond to the 10-6 level of NO2 and has short response time.