You are missing the fact that the holes in this case is not in molecules but in crystals having energy gaps corresponding to certain energy levels, so they can move around a bit and get excited by both phonons (e.g, thermal) and photons. Now, lets all jump into reciprocal space to look at it from another point of view... .-)
DagT Den 18. sep. 2006 kl. 20.24 skrev graywolf: > Oh, lets make it more interesting. A hole is actually a molecule with > one or more missing electrons, hence holes, that can be picked up, > usually from an adjacent molecule. That explains all those moving > holes > I had so much trouble understanding back when transistors came out. > And > to finish off solid state electronics is made postible by having > material that will give off, and receive electrons easily. Hence, > again, > those moving holes. > > There, I have explained in one sentence what whole books have had > trouble getting across <GRIN!>, and no fair saying my explaination is > over simplified. > > -- > graywolf > http://www.graywolfphoto.com > http://webpages.charter.net/graywolf > "Idiot Proof" <==> "Expert Proof" > ----------------------------------- > > > Digital Image Studio wrote: >> On 19/09/06, graywolf <[EMAIL PROTECTED]> wrote: >>> Thanks, Toralf, I have skimmed that and bookmarked to read more >>> closely. >>> >>> Getting a bit of an Ah-Ha from that skim, apparently folks are >>> talking >>> about electrons and holes as if they are the same thing. They >>> definately >>> are not. A hole is a space that can accept an electron, and if we >>> are >>> talking about 40K or so holes in the photodiode then that makes >>> sense as >>> that would be the amount of additional free electrons that the >>> diode can >>> accept (note that lots of them will bounce around and never find >>> a hole >>> to fit into). Still in the real world sense the output can not be >>> considered stepped but a fairly smooth analog curve. Sometimes we >>> try to >>> apply too much to our understanding of things. >> >> Yes, but I don't know if here is the place to discuss Solid-state >> technology in detail :-) >> > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net DagT http://dag.foto.no Beware of internet links. You never know what is on the other side. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
