Semiconductors and light effects

AI Thread Summary
Increasing temperature generally reduces the light effects on resistivity in semiconductors due to enhanced thermal excitation of charge carriers, which can overshadow the effects of light. The distinction between intrinsic and extrinsic semiconductors is significant, as intrinsic materials may exhibit different responses compared to extrinsic ones, depending on doping levels. Measurement of resistivity can be conducted using techniques such as four-point probe or van der Pauw methods, which provide accurate readings by minimizing contact resistance. The interplay between temperature and light exposure is crucial for understanding semiconductor behavior in various applications. Overall, temperature plays a pivotal role in modulating the resistivity of semiconductors under light irradiation.
omri3012
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A piece of Semiconductor is irradiated by light, will the light effects on resistivity be
intensified or reduced if the temprature is increased? why?
 
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omri3012 said:
A piece of Semiconductor is irradiated by light, will the light effects on resistivity be
intensified or reduced if the temprature is increased? why?

What are your thoughts? Does it matter if the semiconductor is intrinsic or extrinsic? How do you propose to measure the resistivity?
 
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