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논문 기본 정보

자료유형
학술저널
저자정보
Konepachith Ouduangvilai (Chonbuk National University) Hoon-Ki Lee (Chonbuk National University) Vallivedu Janardhanam (Chonbuk National University) P. R. Shekar Reddy (Chonbuk National University) Chel-Jong Choi (Chonbuk National University) Kyu-Hwan Shim (Chonbuk National University)
저널정보
대한전자공학회 JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE Journal of Semiconductor Technology and Science Vol.19 No.6
발행연도
2019.12
수록면
540 - 550 (11page)
DOI
10.5573/JSTS.2019.19.6.540

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초록· 키워드

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We have investigated the current transport mechanism of both the reverse and forward gate leakage currents in Au/Ni/Al₂O₃/AlGaN/GaN metaloxide-semiconductor high electron mobility transistors (MOSHEMTs) with the current-voltage (I–V) characteristics in the temperature range of 300–400 K. The room temperature capacitance-voltage (C–V) characteristics revealed a two-step capacitance change, which is the characteristic feature of the MOS-HEMT structure having two interfaces. An analysis of reverse gate leakage current of the Au/Ni/Al₂O₃/AlGaN/GaN MOS structure indicated the dominance of Poole-Frenkel emission mechanism and Schottky emission mechanism in the lower and higher bias regions, regardless of the temperature. The forward log I–log V plot of the Au/Ni/Al₂O₃/AlGaN/GaN MOS structure exhibited two different regions having different slopes, implying the domination of different conduction mechanisms in each region. At higher forward bias, the spacecharge-limited current conduction mechanism dominated the current transport indicating the presence of traps with most of the traps being deep traps with trap energy E<SUB>t≈</SUB> 0.17 eV as determined from the plot of exponent m versus the reciprocal of temperature.

목차

Abstract
Ⅰ. INTRODUCTION
Ⅱ. GROWTH AND DEVICE FABRICATION
Ⅲ. RESULTS AND DISCUSSION
Ⅳ. CONCLUSION
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