berkeman said:Do you have a specific application in mind, Topher?
berkeman said:Hmm, that is weird. How much reverse bias are you using in your current-to-voltage converter amp for the photodiode? Are there other sources of noise, either RF or light, that could be causing the drift?
The temperature of a photodiode can greatly affect its quantum efficiency. As the temperature increases, the quantum efficiency decreases, and vice versa. This is because the thermal energy can cause electron-hole pairs to recombine, reducing the number of charge carriers available to generate a photocurrent.
Yes, it is possible to improve the quantum efficiency of a photodiode by controlling its temperature. By keeping the temperature low, the thermal energy is reduced, resulting in less electron-hole recombination and higher quantum efficiency. However, there may be practical limitations to how low the temperature can be maintained.
Yes, the type of material used in a photodiode can affect its temperature dependence. For example, silicon photodiodes have a lower temperature dependence compared to germanium photodiodes. This is because silicon has a smaller bandgap and therefore requires less thermal energy to create electron-hole pairs, reducing the effects of temperature on quantum efficiency.
The wavelength of light can also affect the temperature dependence of a photodiode. Generally, longer wavelengths of light have a smaller impact on the temperature dependence of a photodiode compared to shorter wavelengths. This is because longer wavelengths require more thermal energy to create electron-hole pairs, making them less affected by temperature changes.
Yes, the temperature dependence of a photodiode can be compensated for in its design. This can be achieved by using multiple photodiodes with different temperature dependencies and combining their outputs in a circuit. This allows for more accurate measurements to be made, even in varying temperatures.