Take the tour ×  diodes are made of silicon, which have been
enriched in phosphorus and boron to create the PN junction.
Since the electrons are always going in the same direction, from
N to P in the junction, I was wondering whether a diode had a
given lifetime after which there is no electrons anymore to move
in the PN junction (no deficiency nor excess in electrons in any
side of the PN junction) ? Thanks!  share|improve this question
Imagine, what will happen when all the electrons in the copper
wires in our homes, refridgerators or computers will be
depleted! –  Georg Jun 8 '11 at 12:24 but isn't it the reason
why solar panels have to be recycled after every few (~20) years
? –  WhitAngl Jun 8 '11 at 12:38 Ancients used to wrap the toga
around their heads to avoid sombody saw them whine. –  Georg Jun
8 '11 at 13:26 I don't seize neither the irony, nor the
relationship with the topic, nor the humor used, nor.... :s – 
WhitAngl Jun 8 '11 at 13:43 add comment  2 Answers  up vote 1
down vote accepted  The el