4H‐SiC MISFETs with nitrogen‐containing insulators
4H‐SiC MISFETs with nitrogen‐containing insulators
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具有含氮绝缘体的 4H-SiC MISFET
DOI:
10.1002/pssa.200925247
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发表时间:
2009
期刊:
影响因子:
--
通讯作者:
T. Kimoto
中科院分区:
文献类型:
--
作者:
M. Noborio;J. Suda;S. Beljakowa;M. Krieger;T. Kimoto
4H‐SiC MISFETs with nitrogen‐containing insulators have been fabricated and characterized. Several techniques have been explored to incorporate nitrogen in the gate insulator in order to improve the density of interface states and thereby the channel mobility. The techniques are N2O‐grown oxides, the oxidation of a surface layer co‐implanted with N+ and Al+, deposited SiO2 annealed in N2O and NO, and deposited SiNx /SiO2 annealed in N2O. By optimizing the formation process of the gate insulators, MIS capacitors with N‐containing insulators have demonstrated an interface state density close to the conduction band edge below 2 × 1011 cm–2 eV–1 which is one or two orders‐of‐magni‐ tude lower than that of MOS capacitors with oxides grown in dry O2. The channel mobility of the n‐channel 4H‐SiC(0001) MISFETs with N‐containing insulators is increased to about 30 cm2/Vs. In addition, an even higher channel mobility of 50 cm2/Vs has been realized by utiliz‐ ing N‐containing insulators adequately processed on the 4H‐SiC (000$ \bar 1 $) face. From the experimental results, the dominant scattering mechanisms in SiC MISFETs have been identified; Coulomb scattering and electron trapping at interface states dominate the channel mobility in SiC MOSFETs with thermally‐grown and deposited SiO2. The application of N‐containing insulators to p‐channel 4H‐SiC MIS devices is also discussed. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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DOI:
10.4028/www.scientific.net/msf.527-529.971
发表时间:
2006-10
期刊:
Materials Science Forum
影响因子:
--
作者:
H. Yano;T. Hatayama;Y. Uraoka;T. Fuyuki
通讯作者:
H. Yano;T. Hatayama;Y. Uraoka;T. Fuyuki
DOI:
--
发表时间:
--
期刊:
影响因子:
--
作者:
通讯作者:
--
影响因子:
3.1
作者:
M. Noborio;Y. Kanzaki;Jun Suda;T. Kimoto
通讯作者:
M. Noborio;Y. Kanzaki;Jun Suda;T. Kimoto
DOI:
--
发表时间:
2008
期刊:
IEEE Trans. Electron Devices 55
影响因子:
--
作者:
M. Noborio;J. Suda;T. Kimoto
通讯作者:
T. Kimoto
DOI:
--
发表时间:
2008
期刊:
Appl. Phys. Express 1
影响因子:
--
作者:
M. Noborio;J. Suda;T. Kimoto
通讯作者:
T. Kimoto