Frequency response analysis of a uni-traveling-carrier double hetero-junction phototransistor - 文章详情页

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To　relieve　the　contradiction　between　phototransistor　response　and　its　working　speed,　the　influences　of　photo-generated　carriers　in　UTC-DHPT　on　the　junction　capacitances　of　emitter　junction　and　collector　junction　were　discussed　in　detail　and　then　the　high　frequency　modeling　of　UTC-DHPT　was　built　in　this　paper.　Based　on　the　proposed　modeling,　the　optical　gain　and　optical　characteristic　frequency　of　UTC-DHPT　were　analyzed　under　three　different　working　modes,　namely　DHBT　working　mode,　2T　two-terminal　working　mode　with　only　optical　base　biasing　and　3T　three-terminal　working　mode　with　hybrid　optical　and　electrical　base　biasing.　The　results　show　that　UTC-DHPT　have　better　frequency　response　than　traditional　SHPT,　and　UTC-DHPT　can　provide　high　responsivity　and　high　response　speed　simultaneously　at　3T　working　mode.　©　2015,　Beijing　University　of　Technology.　All　right　reserved.

关键词：

High frequency; Phototransistor; Uni-travelling-carrier

作者机构：

[ 1 ] [Xie, H.-Y.]College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing, 100124, China
[ 2 ] [Sun, D.]College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing, 100124, China
[ 3 ] [Zhang, L.-H.]College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing, 100124, China
[ 4 ] [Jiang, Z.-Y.]College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing, 100124, China
[ 5 ] [Liu, S.]College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing, 100124, China
[ 6 ] [Zhang, W.-R.]College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing, 100124, China

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