Reduced Turn-On Voltage for npn Graded-Base AlGaN/GaN Heterojunction Bipolar Transistors by Thermal Treatment

<table>Current gain as a function of base-emitter voltage for all fabricated npn graded-base AlGaN/GaN HBT’s. A N-HBT’s is also included for comparisons.</table>

Advances in Materials Science and Engineering

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Figure 5

Figure 5: Reduced Turn-On Voltage for npn Graded-Base AlGaN/GaN Heterojunction Bipolar Transistors by Thermal Treatment 