Presentation 2002/1/9
Novel AlGaN/GaN Mos HFETs with Thermally Grown Gate Oxide
Y. Ikeda, K. Inoue, H. Masato, T. Matsuno, K. Nishii,
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Abstract(in English) AlGaN/GaN MOS HFETs with gate oxides formed by direct thermal oxidation of AlGaN/GaN epi layers have been developed for the first time. The fabricated MOS HFETs have exhibited high breakdown voltages, low gate leakage currents and stable operation at high drain voltages. Although MOS HFET with an undoped channel structure showed a reduced maximum drain current of 4OOmA/mm, higher drain currents up to 9OOmA/mm has been obtained by adopting a doped-channel structure. The gate leakage current has markedly decreased with the increase of the gate-oxide thickness, clearly showing the effectiveness of MOS structures in reducing gate leakage currents. The stable device operations at high drain voltages indicate that the trap density at the interface between the thermal oxide and epi layers will be low and the thermal oxide can be also used as a passivation film.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) gate insulator / thermal oxide / AlGaN/GaN / MOS / HFET / gate leakage current / passivation film
Paper # 2001-ED-186,2001-MW-141,2001-ICD-183
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Conference Date 2002/1/9(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Novel AlGaN/GaN Mos HFETs with Thermally Grown Gate Oxide
Sub Title (in English)
Keyword(1) gate insulator
Keyword(2) thermal oxide
Keyword(3) AlGaN/GaN
Keyword(4) MOS
Keyword(5) HFET
Keyword(6) gate leakage current
Keyword(7) passivation film
1st Author's Name Y. Ikeda
1st Author's Affiliation Semiconductor Device Research Center, Semiconductor Company, Matsushita Electric Industrial Co., Ltd.()
2nd Author's Name K. Inoue
2nd Author's Affiliation Semiconductor Device Research Center, Semiconductor Company, Matsushita Electric Industrial Co., Ltd.
3rd Author's Name H. Masato
3rd Author's Affiliation Semiconductor Device Research Center, Semiconductor Company, Matsushita Electric Industrial Co., Ltd.
4th Author's Name T. Matsuno
4th Author's Affiliation Semiconductor Device Research Center, Semiconductor Company, Matsushita Electric Industrial Co., Ltd.
5th Author's Name K. Nishii
5th Author's Affiliation Semiconductor Device Research Center, Semiconductor Company, Matsushita Electric Industrial Co., Ltd.
Date 2002/1/9
Paper # 2001-ED-186,2001-MW-141,2001-ICD-183
Volume (vol) vol.101
Number (no) 555
Page pp.pp.-
#Pages 6
Date of Issue