Direct measurement of capacitance parameters in nanometer-scale MOSFETs

被引:0
作者
Inokawa, Hiroshi [1 ]
Fujiwara, Akira [2 ]
Nishiguchi, Katsuhiko [2 ]
Ono, Yukinori [2 ]
Satoh, Hiroaki [1 ]
机构
[1] Research Institute of Electronics, Shizuoka University, Naka-ku, Hamamatsu 432-8011
[2] NTT Basic Research Laboratories, NTT Corporation, Wakamiya, Atsugi-shi, Kanagawa Pref. 243-0198
关键词
Capacitance parameter; Metal-oxide-semiconductor field-effect transistor (MOSFET); Single-electron charging effect;
D O I
10.1541/ieejeiss.128.905
中图分类号
学科分类号
摘要
A simple measurement method is proposed for extracting capacitances in nanometer-scale metal-oxide-semiconductor field-effect transistors (MOSFETs). The method utilizes two serially connected MOSFETs and an optional metal layer above the intermediate node between MOSFETs. Gate-drain overlap capacitance and capacitances around the intermediate node, including one related to the metal layer, can be obtained by measuring the transfer current when two MOSFETs are alternately turned on at high frequency. High sensitivity in the order of attofarad is demonstrated using silicon-on-insulator (SOI) MOSFETs with gate length of 140-300 nm and channel width of 320 nm. The proposed method is useful not only in optimizing the high-frequency performance of the scale-down devices, but also in estimating the instability (i.e. kTIC noise) and single-electron charging effect in nanometer-scale circuits. © 2008 The Institute of Electrical Engineers of Japan.
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页码:905 / 911+12
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