A new method to determine the temperature and the ratio of constants q/k/sub B/ by a Ni-Schottky diode on 6H-SiC

An absolute thermometer which refers to the units can be obtained using a Ni-Schottky gate on n-type 6H-SiC. The electrical properties of the Ni-Schottky diode are reported in detail. I-V characteristics are analyzed assuming a voltage dependent ideality factor. The theory of the ideality factor theory is explained, and the application leads to a better characterization technique for the electrical properties of Schottky diodes. The temperature variation shows a new method to accurately determine the temperature by an ideality factor plot. The determination of the ratio of constants q/k/sub B/ can be also made using the initial slope of the ideality factor curve according to the theory.