J. Phys. IV France 11 (2001) Pr3-951-Pr3-955
MOCVD grown InGaP/GaAs camel-like field-effect transistor for high-breakdown and high-temperature operationsW.-C. Liu, K.-H. Yu, K.-W. Lin, K.-P. Lin, C.-H. Yen, C.-C. Cheng, C.-K. Wang and H.-M. Chuang
Institute of Microelectronics, Department of Electrical Engineering, National Cheng-Kung University, l University Road, Tainan, Taiwan 70101, Republic of China
A new heterostructure field-effect transistor (HFET) with GaAs/InGaP camel-like gate and GaAs/InGaAs channel structure has been fabricated by MOCVD. The studied device exhibits a large barrier height, high breakdown voltage, and low leakage current even at high temperature environments. Experimentally, for a 1x100 µm2 device, the gate-drain breakdown voltage and gate leakage current are 52 (31.5) V, and 37 µA/mm (3.5 mA/mm) at the gate-drain voltage of 40 V, respectively, at the temperature of 300 (480) K. The high drain-source operation voltage over 20 V with low leakage current is also obtained. These good performances provide the promise for high-breakdown and high-temperature operations.
© EDP Sciences 2001