[ELI5]: if every light emmiting diode is also a solar panel, why dont smartphones have the ability to charge via the sun?

Question

[ELI5]: if every light emmiting diode is also a solar panel, why dont smartphones have the ability to charge via the sun?

In: Technology

Answer 1

Mainly because they aren’t very efficient being used that way. It’s the same issue with microphones and speakers. They technically can be used interchangeably but a microphone makes a terrible speaker and a speaker makes a terrible microphone. LEDs are just better at emitting light. Also, solar panels are so bad at emitting light that the light they do emit isn’t even visible.