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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/37858

Title: Reduced Turn-On Voltage for npn Graded-Base AlGaN/GaN Heterojunction Bipolar Transistors by Thermal Treatment
Authors: Shih-Wei Tan Shih-Wen Lai
Contributors: Shih-Wei Tan;Shih-Wen Lai
Date: 2012
Issue Date: 2016-05-16T08:21:50Z
Publisher: Advances in Materials Science and Engineering
Abstract: Abstract:a thermal treatment was employed to improve the DC performances of npn graded-base AlGaN/GaN heterojunction bipolar transistors (HBTs). Such HBTs without the thermal treatment exhibit a higher turn-on voltage of 6.45 V, a lower current gain of 0.84, and a lower collector current of 3.18 × 10−4 mA at of 4.5 V. The HBTs are examined by thermal treatment with rapid thermal process (RTP) annealing at various times and various temperatures. Experimental results reveal that the HBTs with the thermal treatment exhibit a lowest turn-on voltage of 3.90 V, a highest current gain of 9.55, and highest collector current of 112.2 mA at of 4.5 V. The thermal treatment brings forth the most remarkable improvements for the HBTs when the base parasitical Schottky diodes are modified.
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/37858
Appears in Collections:[電機工程學系] 期刊論文

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