Origins of Low-Frequency Noise and Interface Traps in 4H-SiC MOSFETs

被引:35
|
作者
Zhang, Cher Xuan [1 ]
Zhang, En Xia [1 ]
Fleetwood, Daniel M. [1 ]
Schrimpf, Ronald D. [1 ]
Dhar, Sarit [2 ]
Ryu, Sei-Hyung [2 ]
Shen, Xiao [3 ]
Pantelides, Sokrates T. [3 ]
机构
[1] Vanderbilt Univ, Dept Elect Engn & Comp Sci, Nashville, TN 37235 USA
[2] Cree Inc, Durham, NC 27703 USA
[3] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA
基金
美国国家科学基金会;
关键词
Interface traps; low-frequency noise; silicon carbide; temperature dependence; 1/F NOISE; MOS; MOBILITY; MODEL;
D O I
10.1109/LED.2012.2228161
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Detailed studies of the temperature and voltage dependences of the low-frequency noise of 4H-SiC MOSFETs and TCAD simulations show that the noise is caused primarily by interface traps. First-principle calculations identify these traps as carbon vacancy clusters and nitrogen dopant atoms at or near the SiC/SiO2 interface.
引用
收藏
页码:117 / 119
页数:3
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