Estimation of Threshold Voltage Shift in a-IGZO TFTs under Different Bias Temperature Stress by Improved Stretched-Exponential Equation

被引:0
|
作者
Ju, Xin [1 ]
Xiao, Xiang [1 ]
Xiao, Yuxiang [1 ]
Zhang, Shengdong [1 ]
机构
[1] Peking Univ, Sch Elect & Comp Engn, Shenzhen 518055, Peoples R China
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TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this work, we study threshold voltage (V-th) shift degradation in amorphous IGZO (a-IGZO) TFTs. The TFTs employ the bottom-gate staggered structure with an etch stopped layer. An improvement is presented to well known stretched-exponential equation for the V-th shift, and a systematic extraction method is provided. The V-th shift in a-IGZO TFTs is estimated quantitatively under different gate bias stress and temperature. Good agreements are obtained between calculated results and measured data.
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页码:149 / 152
页数:4
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