Solar Cell Q (2 Viewers)

[kunny funt]

hold on...
for a solar cell to work in actuality, the p-type can not be exposed to any sunlight at all, or it liberates electrons in the p-type and lowers the potential voltage across the junction at the same rate it increases from the n-type being exposed to light

when sunlight is exposed to the p-type material, it liberates electrons.correct.
However, this is also increasing the number of holes in this material, as well as increasing the number of electrons in the n-type.

This is increasing the potential differece, not decreasing, and the increasing potential difference means the depletion layer is overcome and a current flows throughout the circuit, thus the globe will light up.

 

[gordo]

when sunlight is exposed to the p-type material, it liberates electrons.correct.
However, this is also increasing the number of holes in this material, as well as increasing the number of electrons in the n-type.

This is increasing the potential differece, not decreasing, and the increasing potential difference means the depletion layer is overcome and a current flows throughout the circuit, thus the globe will light up.

incorrect

character limit

 

[gordo]

incorrect

character limit

if u liberate elctrons on both sides of the potential difference it won't increase...

using your logic, by liberating electrons in the n-type, u are also creating holes in it as well as in the p-type

beleive me, if both wafers are exposed to the photoelectric effect it won't work...think about it logically dude, if u can't understand that u have missed the whole point of semiconductors entirely

imagaine if in a transistor u applied a voltage to both emmitter and receiver...wat do u think would happen