Why diode is not demon of Maxwell?

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The discussion clarifies that a diode conducts electrons unidirectionally but does not generate power at any temperature. It emphasizes that diodes merely facilitate the flow of existing electrons under electrical potential rather than emitting new ones. The conversation also draws a comparison to LEDs, which emit light when electrons and holes recombine at the junction, highlighting the necessity of creating conduction electrons and holes for functionality.

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Stanley514
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Diode should conduct electrons in one direction only.
Why doesn`t it produce power at ambient temperature or any temp.?
 
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It merely conducts electrons (that are already present and under and electrical potential); it does not emit them.
 
imagine it were an led
As the electrons and holes recombine at the junction they emit light.
the conduction electrons and holes have to be created somewhere.
 

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