High-density MIM capacitors using Al2O3 and AlTiOx dielectrics

被引：136
|
作者：
Chen, SB [1 ]
Lai, CH
Chin, A
Hsieh, JC
Liu, J
机构：
[1] Natl Chiao Tung Univ, Dept Elect Engn, Hsinchu, Taiwan
[2] United Microelect Corp, Hsinchu, Taiwan
来源：
IEEE ELECTRON DEVICE LETTERS | 2002年 / 23卷 / 04期
关键词：
capacitor; dielectric constant; frequency dependence; high k; MIM; RF;
D O I：
10.1109/55.992833
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：
We have investigated the electrical characteristics of Al2O3 and AlTiOx MIM capacitors from IF (100 KHz) to RF (20 GHz) frequency range. Record high capacitance density of 0.5 and 1.0 muF/cm(2) are obtained for Al2O3 and AlTiOx MIM capacitors, respectively, and the fabrication process is compatible to existing VLSI backend integration. However, the AlTiOx MIM capacitor has very large capacitance reduction as increasing frequencies. In contrast, good device integrity has been obtained for Al2O3 MIM capacitor as evidenced from the small frequency dependence, low leakage current, good reliability, small temperature coefficient, and low loss tangent.
引用
收藏
页码：185 / 187
页数：3
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