Modeling Of The Temperature Characteristics Of Short-channel Most

In many important fields, microelectronics devices and integrated circuits are required to work under very high temperature. So it is valuable to research the high temperature characteristic of microelectronics devices.This paper discussed the electrical characteristic of short channel MOST at very high temperature. We deduced a expressions for threshold voltage temperature coefficient of short channel MOST. And found that the coefficient is almost unchanged in a quite wide temperature range which is higher than the room temperature, but it increased sharply at high temperature. We represent a temperature model of surface carrier mobility of short channel MOST after thinking about kinds of dispersion effect. We discussed the influence of channel-length modulation effect and DIBL effect to temperature behavior of source-drain current, gave a expressions for studying the temperature characteristic of source-drain current, and deduced a ZTC point expression. We probed into the MOST source-drain resistance and its temperature behavior particularly. The result of calculation indicated that the attenuation of source-drain current caused by the source-drain resistance increased when temperature increased.