We report the performance of the first self-aligned InP/InGaAs double heterojunction bipolar transistor (DHBT) produced in China. The device has a 2μm × 12μm U-shaped emitter area and demonstrates a peak common-e...
The Al 0.24Ga 0.76As/In 0.22Ga 0.78As single delta-doped PHEMT (SH-PHEMT) and double delta-doped PHEMT (DH-PHEMT) are fabricated and investigated.Based on the employment of double heterojunction,double del...