Title :
Unusual
–
Characteristics of High-Resistivity SOI Wafers
Author :
Nayak, P. ; Seacrist, M. ; Schroder, D.K.
Author_Institution :
Sch. of Electr., Comput. & Energy Eng., Arizona State Univ., Tempe, AZ, USA
Abstract :
The maximum capacitance for bulk or Silicon on Insulator (SOI) wafers is governed by the gate/contact area. During our capacitance-voltage (C-V) characterization of high-resistivity SOI wafers with Al contacts directly on the Si film, we observed the maximum capacitance to be much higher than that due to the contact area, suggesting bias spreading due to the distributed transmission line of the film resistance and buried oxide capacitance. In addition, an “S”-shape C-V plot was observed in the accumulation region.
Keywords :
electrical contacts; silicon-on-insulator; S-shape C-V plot; buried oxide capacitance; capacitance-voltage characterization; distributed transmission line; film resistance; gate-contact area; high-resistivity SOI wafers; silicon on insulator wafers; Area measurement; Capacitance; Doping; Logic gates; Silicon; Silicon on insulator technology; Substrates; $C$– $V$ characteristics; Bias spreading; high-resistivity SOI (HRS); low-pass filter effect; transmission-line effect;
Journal_Title :
Electron Device Letters, IEEE
DOI :
10.1109/LED.2011.2167651