Liyang Zhang

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A Schottky diode, which contacts the emitter passivation ledge directly, is used as a potentiometer to monitor the effectiveness of the emitter/base junction passivation in AlGaAs/GaAs heterojunction bipolar transistors (HBTs). The function and mechanism of this on-ledge potentiometer are carefully examined and analyzed. With this on-ledge Schottky diode,(More)
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