RC delay reduction of 0.18μm CMOS technology using low dielectric constant fluorinated amorphous carbon

被引:4
|
作者
Matsubara, Y [1 ]
Kishimoto, K [1 ]
Endo, K [1 ]
Iguchi, M [1 ]
Tatsumi, T [1 ]
Gomi, H [1 ]
Horiuchi, T [1 ]
Tzou, E [1 ]
Xi, M [1 ]
Cheng, LY [1 ]
Tribula, D [1 ]
Moghadam, F [1 ]
机构
[1] NEC Corp Ltd, Sagamihara, Kanagawa 2291198, Japan
关键词
D O I
10.1109/IEDM.1998.746486
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
A low-k fluorinated amorphous carbon (a-C:F: dielectric constant 2.5) film as inter-metal dielectric (IMD) has been successfully integrated in 0.18-mu m CMOS technology. The RC delay of a ring oscillator with loaded wiring(length: 10mm) is reduced by 22% using an a-C:F IMD compared with that using a SiO2 IMD. The thermal stability problems from integrating a-C:F IMD with a W plug (deposition temperature. 370 degrees C, film stress: 1.5x10(10)dyne/cm(2)) can be overcome by using post a-C:F deposition anneal. This leads to less a-C:F outgassing at temperatures up to 375 degrees C.
引用
收藏
页码:841 / 844
页数:4
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