A Study on the Validity of C-V Method for Extracting the Effective Channel Length of MOSFET)

MOSFET의 Effective Channel Length를 추출하기 위한 C-V 방법의 타당성 연구

  • 이성원 (이화여자대학교 정보통신학과) ;
  • 이승준 (이화여자대학교 전자공학과) ;
  • 신형순 (이화여자대학교 전자공학과)
  • Published : 2002.10.01

Abstract

C- V method is a means to determine the effective channel length for miniaturized MOSFET's. This method achieves L$_{eff}$ by extracting a unique channel length independent extrinsic overlap length($\Delta$L) at a critical gate bias point. In this paper, we conducted an experiment on two different C-V methods. L$_{eff}$ extracted from experiment is compared with L$_{eff}$ simulated from a two-dimensional (2-D) device simulator, and the accuracy of C-V method for L$_{eff}$ extraction is analyzed.

C-V 방법은 소형화된 MOSFET에서 effective channel length(L/sub eff/)를 추출하기 위한 방법 중 한가지이다. 이 방법은 critical gate bias point에서 channel length에 영향을 받지 않는 extrinsic overlap 영역의 길이(△L)를 구하여 L/sub eff/를 추출하게 된다.본 논문에서는 서로 다른 두 개의 C-V 방법에 대해 실험을 수행하였다. 그리고 실험으로 추출한 값과 2차원 소자 시뮬레이터의 결과를 비교하여 C-V 방법의 정화도를 분석하였다.

Keywords

References

  1. B.J. Sheu and P.K. Ko, 'A Capacitance Method to Determine Channel Lengths for Conventional and LDD MOSFET's' IEEE Electron Device Lett., Vol. EDL-5, p. 491, 1984
  2. P. Vitanov, U. Schwabe and I, Eisele, 'Electrical Characterize of Feature Sizes and Parasitic Capacitances Using a Single Test Structure,' IEEE Trans, Electron Devices, Vol. ED-31, p. 96, 1984
  3. C.T. Yao, I.A. Mack and H.C. Lin, 'Accuracy of Effective Channel-Length Extraction Using the Capacitance Method' IEEE Electron Devices Lett., Vol.EDL-7, p.268, 1986
  4. P. Viatanove, T. Dimitrova, R. Kamburova and K. Filljov, 'Capacitance Method for determination of LDD MOSFET Geometrical Parameters,; Soild-State Electronics, Vol. 35, p. 985, 1992 https://doi.org/10.1016/0038-1101(92)90329-B
  5. J.-C, Guo, S. S-S. Chung, and C. C.-H, Hsu, 'A New Approach to Determine the Effective Channel Length and the Drain-and-Source Series Resistance of Minaturized MOSFET's' IEEE Trans Electron Devices, Vol. 41, p. 403, 1994 https://doi.org/10.1109/16.324592
  6. L. Selmi, E. Sangiori and B. Ricco, 'Parameter extraction from I-V Characteristics of single MOSFET's' IEEE Trans Electron Devices, Vol.36, p.1094, 1989 https://doi.org/10.1109/16.24353
  7. R Narayanan, 'Two-dimensional nurmerical analysis for extracting the effective channel lenth of shor-channel MOSFETs', Solid-state Eletronics, Vol. 38, p. 1155, 1995 https://doi.org/10.1016/0038-1101(94)00231-4
  8. MEDICI Manual (version 4.0.0)