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In this paper, based on the two-dimensional (2D) Possion's equation, an analytical model of threshold voltage, which is applied to a sub-100nm strained-Si/SiGe nMOSFET, is pro- posed. The secondary effects induced by reducing size such as short-channel effects, quantum mechanical effects are also taken into consideration in order to ensure the accuracy of the model. Then the evidence for the validity of our model is derived from the comparison between analytical results and the simulation data from the 2D device simulator ISE. Finally, the influence of conventional arts in sub-100 nm device fabrication on threshold voltage is also discussed. The proposed model can also be easily used for reasonable analysis and design of sub-100nm strained-Si/SiGe nMOSFET.
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Keywords:
- sub-100 nm /
- strained-Si/SiGe nMOSFET /
- 2D surface potential /
- threshold voltage
[1] O'Neil A G, Antoniadis D A 1996 IEEE Trans.Electron Devices 43 911
[2] Song J J, Zhang H M, Hu H Y, Dai X Y, Xuan R X 2007 Chin.Phys. 16 3827
[3] Song J J, Zhang H M, Hu H Y, Xuan R X, Dai X Y 2009 Acta Phys. Sin. 58 7947 (in Chinese) [宋建军、张鹤鸣、胡辉勇、宣荣喜、戴显英 2009 58 7947]
[4] Wang G Y, Zhang H M, Song J J, Wang X Y, Qin S S, Qu J T 2010 Acta Phys. Sin. (in press) [王冠宇、张鹤鸣、宋建军、王晓艳、秦珊珊、屈江涛 2010 ](已接受)
[5] Karthik C, Zhou X, Chiah S B 2004 NSTI-Nanotech 2 179
[6] Tinoco J C, Garcia R, Iňiguez, Cerdeira A, Estrada M 2008 Semicond.Sci.Tech nol. 23 035017
[7] Zhang Z F, Zhang H M, Hu H Y, Xuan R X, Song J J 2009 Acta Phys.Sin. 58 4948 (in Chinese) [张志锋、张鹤鸣、胡辉勇、宣荣喜、宋建军 2009 58 4948]
[8] Kumar M J, Venkataraman V, Nawal S 2007 J. Comput. Electron. 6 439
[9] Nayfeh H M, Hoyt J L, Antoniadis D A 2004 IEEE Trans.Electron Devices 51 2069
[10] Janik T, Majkusiak B 1994 J.Appl.Phys. 75 5186
[11] Xu J P, Li Y P, Lai P T, Chen W B, Xu S G, Guan J G 2008 Microelectronics Reliability 48 23
[12] Yang N, Henson W K, Hauser J R, Wortman J J 1999 IEEE Trans. Electron Devices 46 1464
[13] Stern F 1972 Phys.Rev.B 5 4891
[14] Zhang W M, Fossum J G 2005 IEEE Trans.Electron Devices 52 263
[15] Song J J, Zhang H M, Xuan R X, Hu H Y, Dai X Y 2009 Acta Phys. Sin. 58 4958 (in Chinese) [宋建军、张鹤鸣、宣荣喜、胡辉勇、戴显英 2009 58 4958]
[16] Suzuki K 2000 IEEE Trans.Electron Devices 47 1202
[17] Low T, Li M F, Samudra G, Yeo Y C, Zhu C, Chin A, Kwong D L 2005 IEEE Trans. Electron Devices 52 2430
[18] Xu S L, Xie M X, Zhang Z F 2007 SiGe Microelectronics Technology (Beijing: National Defense Industry Press) p269 (in Chinese) [徐世六、谢孟贤、张正璠 2007 SiGe微电子技术(北京:国防工业出版社)第269页]
[19] Zou X, Xu J P, Li C X, Lai P T, Chen W B 2007 Microelectronics Reliability 47 391
[20] Yu B, Clement H J, Wann 1997 IEEE Trans. Electron Devices 44 627
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[1] O'Neil A G, Antoniadis D A 1996 IEEE Trans.Electron Devices 43 911
[2] Song J J, Zhang H M, Hu H Y, Dai X Y, Xuan R X 2007 Chin.Phys. 16 3827
[3] Song J J, Zhang H M, Hu H Y, Xuan R X, Dai X Y 2009 Acta Phys. Sin. 58 7947 (in Chinese) [宋建军、张鹤鸣、胡辉勇、宣荣喜、戴显英 2009 58 7947]
[4] Wang G Y, Zhang H M, Song J J, Wang X Y, Qin S S, Qu J T 2010 Acta Phys. Sin. (in press) [王冠宇、张鹤鸣、宋建军、王晓艳、秦珊珊、屈江涛 2010 ](已接受)
[5] Karthik C, Zhou X, Chiah S B 2004 NSTI-Nanotech 2 179
[6] Tinoco J C, Garcia R, Iňiguez, Cerdeira A, Estrada M 2008 Semicond.Sci.Tech nol. 23 035017
[7] Zhang Z F, Zhang H M, Hu H Y, Xuan R X, Song J J 2009 Acta Phys.Sin. 58 4948 (in Chinese) [张志锋、张鹤鸣、胡辉勇、宣荣喜、宋建军 2009 58 4948]
[8] Kumar M J, Venkataraman V, Nawal S 2007 J. Comput. Electron. 6 439
[9] Nayfeh H M, Hoyt J L, Antoniadis D A 2004 IEEE Trans.Electron Devices 51 2069
[10] Janik T, Majkusiak B 1994 J.Appl.Phys. 75 5186
[11] Xu J P, Li Y P, Lai P T, Chen W B, Xu S G, Guan J G 2008 Microelectronics Reliability 48 23
[12] Yang N, Henson W K, Hauser J R, Wortman J J 1999 IEEE Trans. Electron Devices 46 1464
[13] Stern F 1972 Phys.Rev.B 5 4891
[14] Zhang W M, Fossum J G 2005 IEEE Trans.Electron Devices 52 263
[15] Song J J, Zhang H M, Xuan R X, Hu H Y, Dai X Y 2009 Acta Phys. Sin. 58 4958 (in Chinese) [宋建军、张鹤鸣、宣荣喜、胡辉勇、戴显英 2009 58 4958]
[16] Suzuki K 2000 IEEE Trans.Electron Devices 47 1202
[17] Low T, Li M F, Samudra G, Yeo Y C, Zhu C, Chin A, Kwong D L 2005 IEEE Trans. Electron Devices 52 2430
[18] Xu S L, Xie M X, Zhang Z F 2007 SiGe Microelectronics Technology (Beijing: National Defense Industry Press) p269 (in Chinese) [徐世六、谢孟贤、张正璠 2007 SiGe微电子技术(北京:国防工业出版社)第269页]
[19] Zou X, Xu J P, Li C X, Lai P T, Chen W B 2007 Microelectronics Reliability 47 391
[20] Yu B, Clement H J, Wann 1997 IEEE Trans. Electron Devices 44 627
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