A Threshold Voltage Model for the IMOS Device Using Hetero Structure
IMOS allows very sharp subthreshold slopes,even down to a few mV/dec at room temperature.However,the device has serious reliability problems,such as large threshold voltage shifts,caused by hot carrier induced damage and the large supply voltage.Hetero IMOS,using the small bandgap material as the channel material,improves device reliability and decreases power consumption by reducing off-state currents and features a lower breakdown voltage compared to conventional IMOS.In this paper,a threshold voltage model is proposed in different distribution of surface electric field and in the condition of avalanche breakdown.The result is analyzed with the simulation data.It promotes the application of IMOS to VLSI design.
avalanche breakdown Hereto IMOS threshold voltage
Heming Yao
Beihang Sino-French Engineer School,Beihang University,Beijing,China
国际会议
杭州
英文
1691-1694
2013-03-22(万方平台首次上网日期,不代表论文的发表时间)