Extraction of physical parameters
of strained-silicon MOSFETs from C-V measurement
K. Chandrasekaran(1), X.
Zhou(1), S. B. Chiah(1),
W. Z. Shangguan(1), G. H. See(1),
L. K. Bera(2), N. Balasubramanian(2), S. C. Rustagi(2)
(1) School of Electrical and Electronic Engineering,
Nanyang Technological University, Singapore 639798
(2) Institute of Microelectronics, 11, Science Park Road,
Singapore Science Park II, Singapore 117685
Proc. of the 2005 European Solid-State Device
Research Conference (ESSDERC2005),
pp. 521-524
Grenoble, France, September 12-16, 2005.
Copyright | Abstract
| References | Reprint
|
Slides
|
Back
Copyright Notice
© 2005 IEEE. Personal use of this material is permitted. However,
permission to reprint/republish this material for advertising or promotional
purposes or for creating new collective works for resale or redistribution
to servers or lists, or to reuse any copyrighted component of this work
in other works must be obtained from the IEEE.
Abstract
This paper presents a methodology for extraction of the physical parameters
of strained-silicon MOSFET from one capacitance-voltage (C-V) measurement
based on physics-based compact model and conventional C-V characterization
techniques. The extracted physical parameters (such as strained-silicon
layer thickness and doping as well as conduction band offset) are used
to create a numerical (Medici) device structure, from which the simulated
C-V data is compared with the measured data as well as that from the compact
model (Xsim), which validates the extraction technique. The proposed
approach provides a simple yet physical means to probe into strained-silicon
MOSFFET structures useful for characterize and model these devices, which
are emerged as promising candidates for the enhancement and extension to
conventional bulk-Si CMOS technology.
References
-
[1] K. Rim, S. Narasimha, M. Longstreet, A. Mocuta, and J. Cai, “Low field
mobility characteristics of sub-100 nm unstrained and strained Si MOSFETs,”
in IEDM Tech. Dig, pp. 43–46, 2002.
-
[2] J. L. Hoyt, H. M. Nayfeh, S. Eguchi, I. Aberg, G. Xia, T. Drake, E.
A. Fitzgerald, and D. A. Antoniadis, “Strained silicon MOSFET technology,”
in IEDM Tech. Dig., 2002, pp. 23–26.
-
[3] C.-H. Wang, Y.-P. Wang, S.-J. Chen, C.-H. Ge, S. M. Ting, J.-Y. Kung,
R.-L. Hwang, H.-K. Chiu, L. C. Sheu, P.-Y. Tsai, L.-G. Yao, S.-C. Chen,
H.-J. Tao, Y.-C. Yeo, W.-C. Lee, and C. Hu, “Substrate strained silicon
technology: Process integration,” in IEDM Tech. Dig., 2003, pp. 61–64.
-
[4] C. K. Maiti, L. K. Bera, and S Chattopadhyay, “Strained-Si heterostructure
field effect transistors,” Semicond. Sci. Tech., vol. 13, pp. 1225–1246,
1998.
-
[5] S. P. Voinigescu, K. Iniewski, R. Lisak, C. A. T. Salama, J.-P. Noel,
and D. C. Houghton, “New technique for the characterization of Si/SiGe
layers using heterostructure MOS capacitors,” Solid-State Electron., vol.
37, pp. 1491–1501, 1994.
-
[6] S. Chattopadhyay, K. S. K. Kwa, S. H. Olsen, L. S Driscoll, and
A. G. O’Neil, “C–V characterization of strained Si/SiGe multiple heterojunction
capacitors as a tool for heterojunction MOSFET channel design,” Semicond.
Sci. Tech., vol. 18, pp. 738–744, 2003.
-
[7] K. Chandrasekaran, X. Zhou, S. B. Chiah, W. Shangguan, G. H. See, L.
K. Bera, N. Balasubramanian, and S. C. Rustagi, “Effect of substrate doping
on the capacitance–voltage characteristics of strained-silicon pMOSFETs,”
submitted for publication.
-
[8] Medici User Manual, Synopsys, 2003.
-
[9] K. Chandrasekaran, X. Zhou, S. B. Chiah, W. Shangguan, and G.
H. See, “Physics-based single-piece charge model for strained-Si MOSFETs”,
revised and submitted to IEEE transaction on Electron devices.
-
[10] P. M. Garone, V. Venkataraman, and J. C. Sturni, “Hole confinement
MOS-gated GexSi1 x/Si heterostructures,” IEEE Electron
Device Lett., vol. 12 , pp. 230–232, 1991.
-
[11] X. Zhou, S. B. Chiah, K. Chandrasekaran, G. H. See, W. Shangguan,
S. M. Pandey, C. H. Ang, S. Chu, L.-C. Hsia, “Unified regional charge model
with non-pinned surface potential,” Proc. of the 2nd International Workshop
on Compact Modeling (IWCM-2005), pp. 13–17, Shanghai, Jan. 2005.
-
[12] G. H. See, S. B. Chiah, X. Zhou, K. Chandrasekaran, W. Shangguan,
S. M. Pandey, M. Cheng, S. Chu, and L.-C. Hsia, “Unified regional charge-based
MOSFET model calibration,” Proc. NSTI Nanotech 2005, Anaheim, May 2005.