Suppression of threshold voltage variability of double-gate fin field-effect transistors using amorphous metal gate with uniform work function
Suppression of threshold voltage variability of double-gate fin field-effect transistors using amorphous metal gate with uniform work function
复制标题
使用具有均匀功函数的非晶金属栅极抑制双栅鳍式场效应晶体管的阈值电压变化
DOI:
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发表时间:
2013
期刊:
影响因子:
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通讯作者:
M. Masahara
中科院分区:
文献类型:
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作者:
T. Matsukawa;Yongxun Liu;W. Mizubayashi;J. Tsukada;H. Yamauchi;K. Endo;Y. Ishikawa;S. O'Uchi;H. Ota;S. Migita;Y. Morita;M. Masahara
An amorphous TaSiN metal gate (MG) is introduced into double-gate fin field-effect transistors (FinFETs) to suppress work function variation (WFV) of the MG, which is a dominant source of threshold voltage (Vt) variability for MG FinFETs. Comparing with a poly-crystalline TiN gate, the TaSiN gate reduces Vt variation dramatically and thus records the smallest AVt value of 1.34 mV μm reported so far for the MG-FinFETs. By decomposing the variation source due to interface trap density, the WFV suppression using the amorphous MG is confirmed to be effective to achieve the well-suppressed variability of the MG-FinFETs.