Metamorphic InP/InGaAs double-heterojunction bipolar transistors on GaAs grown by molecular-beam epitaxy

被引:41
|
作者
Zheng, HQ [1 ]
Radhakrishnan, K [1 ]
Wang, H [1 ]
Yuan, KH [1 ]
Yoon, SF [1 ]
Ng, GI [1 ]
机构
[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Ctr Microelect, Singapore 639798, Singapore
关键词
D O I
10.1063/1.1306657
中图分类号
O59 [应用物理学];
学科分类号
摘要
InP/InGaAs double-heterojunction bipolar transistor (HBT) structures were grown metamorphically on GaAs substrates by solid-source molecular-beam epitaxy. A linearly graded InxGa1-xP (x varying from 0.48 to 1) buffer layer was used to accommodate the strain relaxation. The crystallinity of the buffer layer and the HBT structure was examined by x-ray diffractometry. Devices with 5 x 5 mu m(2) emitter area showed a typical peak current gain of 40, a common-emitter breakdown voltage (BVCEO) higher than 9 V, a current gain cut-off frequency (f(T)) of 46 GHz, and a maximum oscillation frequency (f(max)) of 40 GHz. (C) 2000 American Institute of Physics. [S0003-6951(00)02432-3].
引用
收藏
页码:869 / 871
页数:3
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