Bipolar junciton transistor physics under temperature

Status
Not open for further replies.

Thread Starter

gary1wang

Joined Sep 18, 2008
23
Hi Guys.


I am using diode connected bipor junciton transistor to measure temperature. The voltage is measured by the microcontroller.

The temperature is calculated base on T=qΔVbe/(nKln(I1/I2))

n is emission coefficient or ideality factor



There is some temperature difference between actual temperature and measured temperature. The difference is getting bigger at 2 degrees. and no difference lower than 2 degrees

My question is that there is a emisson coefficient on bipor junction transistor. Is this emission coefficent increases with temperterature?

Is there any material that i can read on the temperature effect on transistor on semiconductor physics?
 
Status
Not open for further replies.
Top