SnO 2 ISFET device, manufacturing method, and methods and...

Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Responsive to non-optical – non-electrical signal

Reexamination Certificate

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Details

C257S310000, C257S316000, C257S508000, C257S633000, C438S608000

Reexamination Certificate

active

07019343

ABSTRACT:
A SnO2ISFET device and manufacturing method thereof. The present invention prepares SnO2as the detection membrane of an ISFET by sol-gel technology to obtain a SnO2ISFET. The present invention also measures the current-voltage curve for different pH and temperatures by a current measuring system. The temperature parameter of the SnO2ISFET is calculated according to the relationship between the current-voltage curve and temperature. In addition, the drift rate of the SnO2ISFET for different pH and hysteresis width of the SnO2ISFET for different pH loop are calculated by a constant voltage/current circuit and a voltage-time recorder to measure the gate voltage of the SnO2ISFET.

REFERENCES:
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patent: 5072262 (1991-12-01), Uekita et al.
patent: 5078855 (1992-01-01), Mochizuki et al.
patent: 5240586 (1993-08-01), Moore et al.
patent: 6255678 (2001-07-01), Sawada et al.
patent: 6667199 (2003-12-01), Torii et al.

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