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In order to describe the electron mobility enhancement in inversion layer in strained-Si on Si1-xGex n type metal-oxide-semiconductor field-effect transistors (nMOSFETs), a new physically-based electron mobility model is presented in the paper. This model can not only show the dependence of acoustic phonon-limited mobility and surface roughness-limited mobility on transverse electrical field normal to the semiconductor-insulator interface, but also explains the electron mobility enhancement mechanism due to scattering suppression caused by germanium (Ge) content. The expression of the new model is simple and can simulate the mobility for any Ge content. Numerical analysis results show that this model fits the reported experimental data very well. In addition, this model can be easily included in the device simulator ISE and gives good agreement with simulated results of device simulator with built-in model.
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Keywords:
- strained-Si/SiGe /
- electron mobility /
- inversion layer /
- model
[1] Vogelsang T, Hofman K R 1993 Appl. Phys. Lett. 63 186
[2] Zhang Z F, Zhang H M, Hu H Y, Xuan R Y, 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]
[3] Song J J, Zhang H M, Hu H Y, Dai X Y, Xuan R X 2007 Chin. Phys. 16 3827
[4] Leitz C W, Currie M T, Lee M L, Cheng Z Y 2002 J. Appl. Phys. 92 3745
[5] Fitzgerald E A, Xie Y H, Green M L, Brasen D, Kortan A R 1991 Appl. Phys. Lett. 59 811
[6] Welser J, Hoyt J L, Gibbons J F 1994 IEEE Electron Devices Lett. 15 100
[7] Miyata H, Yamada T, Ferry D K 1993 Appl. Phys. Lett. 62 2661
[8] Cheng B F, Yao F, Xue C L, Zhang J G, Li C B, Mao R Y, Zuo Y H, Luo L P, Wang Q M 2005 Acta Phys. Sin. 54 4350 (in Chinese) [成步飞、 姚 飞、 薛春来、 张建国、 李传波、 毛容伟、 左玉华、 罗丽萍、 王启明 2005 54 4350]
[9] Lin G J, Lai H K, Li C, Chen S Y, Yu J Z 2008 Chin. Phys. B 17 3479
[10] Lombardi C, Manzini S, Saporito A, Vanzi M 1988 IEEE Transactions on Computer-Aided Design 7 1164
[11] Darwish M N, Lentz J L, Pinto M R, Zeitzoff P M, Krutick T J, Vuong H H 1997 IEEE Trans. Electron Devices 44 1529
[12] Liang R R, Li D B, Xu J 2008 Solid-State Electronics 52 863
[13] Masetti G, Severi M, Solmi S 1983 IEEE Trans. Electron Devices 30 764
[14] Sah C T, Ning T H, Tschopp L L 1972 Surface Sci. 32 561
[15] Schwarz S A, Russek S 1983 IEEE Trans. Electron Devices 30 1634
[16] Currie M T, Leitz C W, Langdo T A, Taraschi G, Eitzgerald E A, Antoniadis D A 2001 J. Vac. Sci. Technol. B 19 2268
[17] Kim S J, Shim T H, Choi K R, Park J G 2009 Semi. Sci. Tech. 24 035014.1
[18] Roldán J B, Gámiz F 2004 Solid-State Electronics 48 1347
[19] Sun S C, Plummer J D 1980 IEEE Trans. Electron Devices 27 1497
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[1] Vogelsang T, Hofman K R 1993 Appl. Phys. Lett. 63 186
[2] Zhang Z F, Zhang H M, Hu H Y, Xuan R Y, 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]
[3] Song J J, Zhang H M, Hu H Y, Dai X Y, Xuan R X 2007 Chin. Phys. 16 3827
[4] Leitz C W, Currie M T, Lee M L, Cheng Z Y 2002 J. Appl. Phys. 92 3745
[5] Fitzgerald E A, Xie Y H, Green M L, Brasen D, Kortan A R 1991 Appl. Phys. Lett. 59 811
[6] Welser J, Hoyt J L, Gibbons J F 1994 IEEE Electron Devices Lett. 15 100
[7] Miyata H, Yamada T, Ferry D K 1993 Appl. Phys. Lett. 62 2661
[8] Cheng B F, Yao F, Xue C L, Zhang J G, Li C B, Mao R Y, Zuo Y H, Luo L P, Wang Q M 2005 Acta Phys. Sin. 54 4350 (in Chinese) [成步飞、 姚 飞、 薛春来、 张建国、 李传波、 毛容伟、 左玉华、 罗丽萍、 王启明 2005 54 4350]
[9] Lin G J, Lai H K, Li C, Chen S Y, Yu J Z 2008 Chin. Phys. B 17 3479
[10] Lombardi C, Manzini S, Saporito A, Vanzi M 1988 IEEE Transactions on Computer-Aided Design 7 1164
[11] Darwish M N, Lentz J L, Pinto M R, Zeitzoff P M, Krutick T J, Vuong H H 1997 IEEE Trans. Electron Devices 44 1529
[12] Liang R R, Li D B, Xu J 2008 Solid-State Electronics 52 863
[13] Masetti G, Severi M, Solmi S 1983 IEEE Trans. Electron Devices 30 764
[14] Sah C T, Ning T H, Tschopp L L 1972 Surface Sci. 32 561
[15] Schwarz S A, Russek S 1983 IEEE Trans. Electron Devices 30 1634
[16] Currie M T, Leitz C W, Langdo T A, Taraschi G, Eitzgerald E A, Antoniadis D A 2001 J. Vac. Sci. Technol. B 19 2268
[17] Kim S J, Shim T H, Choi K R, Park J G 2009 Semi. Sci. Tech. 24 035014.1
[18] Roldán J B, Gámiz F 2004 Solid-State Electronics 48 1347
[19] Sun S C, Plummer J D 1980 IEEE Trans. Electron Devices 27 1497
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