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Old Apr 24th 2016, 07:55 AM   #1
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Max p.d of photons across p-n junction

Photons with frequency 4.57x10^14Hz are incident on a p-n junction in a solar cell. What is the maximum potential difference these photons produce across this junction?

I calculated E to be 3.03x10^-19 J but I don't really know where to go from here. I thought maybe E=1/2QV but I don't know how to get charge?
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