TITLE

Application of InGaAs/GaAs superlattice-base structure for InGaP/GaAs superlattice-emitter bipolar transistor

AUTHOR(S)
Jung-Hui Tsai; Yuan-Hong Lee; Ning-Feng Dale; Jhih-Syuan Sheng; Yung-Chun Ma; Sheng-Shiun Ye
PUB. DATE
February 2010
SOURCE
Applied Physics Letters;2/8/2010, Vol. 96 Issue 6, p063505
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The performance of an InGaP/GaAs superlattice-emitter bipolar transistor with InGaAs/GaAs superlattice-base structure is demonstrated by experimental results. The injecting electrons from superlattice emitter are easy to transport into the superlattice-base region for promoting the collector current by tunneling behavior. Furthermore, the average energy gap of base regime is substantially reduced by the use of InGaAs/GaAs superlattice structure for the requirement of low turn-on voltage. Experimentally, the transistor exhibits a maximum common-emitter current gain of 295 and a relatively low collector-emitter offset voltage of only 16 mV. In particular, the ideality factor of collector current near to unity is obtained.
ACCESSION #
48067904

 

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