High current gain, low offset voltage heterostructure emitter bipolar transistors

1994 ◽  
Vol 15 (9) ◽  
pp. 336-338 ◽  
Author(s):  
H.R. Chen ◽  
C.Y. Chang ◽  
C.P. Lee ◽  
C.H. Huang ◽  
J.S. Tsang ◽  
...  
2002 ◽  
Vol 25 (3) ◽  
pp. 239-243
Author(s):  
K. F. Yarn

The influence of delta doping sheet at base-emitter (BE) junction for an InGaP/GaAs heterojunction bipolar transistor (HBT) with a 75Å undoped spacer layer is investigated. A common emitter current gain of 235, an offset voltage as small as 50mV and an Ic ideal factor of 1.01 are obtained, respectively. The use of delta doping sheet at BE junction results in a high gain and low offset voltage HBT. The improvement of current gain and offset voltage may be attributed to the reduction of BE potential spike by introducing a delta doping layer even without the BE junction passivation.


2012 ◽  
Vol 521 ◽  
pp. 172-175 ◽  
Author(s):  
Jung-Hui Tsai ◽  
Wen-Shiung Lour ◽  
Yi-Ting Chao ◽  
Sheng-Shiun Ye ◽  
Yung-Chun Ma ◽  
...  

1988 ◽  
Vol 9 (10) ◽  
pp. 524-526 ◽  
Author(s):  
R.N. Nottenburg ◽  
Y.-K. Chen ◽  
M.B. Panish ◽  
R. Hamm ◽  
D.A. Humphrey

2003 ◽  
Vol 50 (10) ◽  
pp. 2154-2158 ◽  
Author(s):  
Bei-Ping Yan ◽  
E.S. Yang ◽  
Yue-Fei Yang ◽  
Xiao-Qin Wang ◽  
Chung-Chi Hsu

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