I am looking for a good idea for a science fair project for PA Junior Academy of Science (PJAS). An interesting idea that I have stumbled across is making semiconductors more conductive with heat. I already know that conductors obtain a higher resistivity when heated up and vise-versa when they are cooled down. Theoretically, with the formulas that I have found online, a semiconductor will begin to conduct better than a conductor at a great enough temperature. The formula is in here:
Is this correct for both Conductors and semiconductors? And if so, is it actually possible to do this? Please elaborate on how if true and what temperature is needed.