Talk:Photodiode
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Hi there. Can someone please put some stuff up for the construcion and how th photo diodes work please?
What are some possible reasons photodiodes do not reach saturation?
I think that this article needs to mention semiconductor physics or link to a discussion therein. Therobotbuilder 19:57, 12 November 2006 (UTC)
I have some conservation of energy angst. The diode's built-in field is what accelerates the electrons to create the drift velocity (hence current) in the diode. So the energy that is generated from a photovoltaic cell would seem to come from the p-n junction (and its' charge carrier gradient), not the light source which generated the electron-hole pair in the first place. I know the light must be the source of energy behind the current that is generated, but I can't quite see how. can anyone explain? Andybuckle 16:48, 15 January 2007 (UTC)
"electrons that are generated by photons in the base-collector junction _are injected into the base_" in the description of phototransistor work in the first para. Is that true? Aren't the electrons swept into the collector, increasing its current and the holes gather in the base region increasing its voltage? --Janislaw 10:35, 16 January 2007 (UTC)
Picture
Can Someone confirm that the pictures is actually a photodiode. It looks like an LED. 194.200.145.5 13:24, 2 February 2007 (UTC)
