Calculate Bandgap Voltage for GaAs Photodiode: 5V Reverse Bias

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To calculate the bandgap voltage for a GaAs photodiode under a 5V reverse bias, it is essential to understand that the bandgap voltage is equivalent to the bandgap energy expressed in electron volts (eV). The discussion highlights confusion around the terminology, clarifying that if the bandgap energy is provided in eV, it directly translates to the bandgap voltage. Participants suggest converting the bandgap energy to eV if necessary. This conversion is crucial for determining the slowest possible transmit time for the carrier in the photodiode. Understanding this relationship simplifies the calculation process for the problem at hand.
Infidel22
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Hello, I am having a bit of trouble with the following problem:

Assuming a built in voltage equal to the bandgap voltage, calculate the slowest possible transmit time for a carrier with 5V reverse bias applied to the GaAs photodiode.

I would be able to do this problem without difficulty if it wasnt for the part mentioning "Bandgap Voltage." I am familiar with bangap energy and how to calculate it, but I have no idea how to figure out the bandgap voltage for a given material. Can anyone give me any hints on this?

Thanks!
 
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convert bandgap energy to electron volts (if strangely, it isn't already in eV). The bandgap voltatge is numerically the same as this number.
 

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