Probably, but you would be disappointed at the amount of energy you got from it. Some LEDs can be very bright – place a sheet of white paper in the sun, and shine the LED on it and it will be visible, so is brighter than the sun at that wavelength (colour). However the spot is only like 1cm diameter.
For a panel to work all the cells need to be illuminated. When the spot from an LED is spread across the whole panel in some way, it will be very dim, considering the area of the panel is maybe 1000 times greater than the area illuminated by an LED.
The result is that the output of the panel is very small, a few milliwatts, even allowing that the light was spread across the panel with no losses. Another way to look at it is the panel is only about 10% efficient at converting light to electrical power. The optical power from a very bright LED is of the order of a few hundred milliwatts.
If you are talking about a single solar cell of small area, say 1 or 2 cm^2, arranged so that all the energy from the LED falls on the cell, the output will be more useful as a sensor of LED brightness etc. It will work better because the areas match better. It will still only be milliwatts output. This would be more usually called a photo-diode.
It will, but not very well. LEDs do not put out the same color spectrum as the sun, and even the best “white” ones are just tuned to be pleasing to the human eye. Solar panels are optimized to work best with light from the sun, some more so than others.
There will be some combinations of specific solar panels an specific LEDs that will generate power more effectively than others, and some that will scarely generate any at all.
This is mostly of interest if you have a sentimental attachment to your solar calculator, and are considering changing the lights in your office to LEDs.
Solar panels utilize a very narrow spectrum of light from the sun. You would need to find a LED that produces the wave length of light that the solar panel needs to produce any measurable amount of electricity.
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Sure, any visible light will produce power out of a solar cell.
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Probably, but you would be disappointed at the amount of energy you got from it. Some LEDs can be very bright – place a sheet of white paper in the sun, and shine the LED on it and it will be visible, so is brighter than the sun at that wavelength (colour). However the spot is only like 1cm diameter.
For a panel to work all the cells need to be illuminated. When the spot from an LED is spread across the whole panel in some way, it will be very dim, considering the area of the panel is maybe 1000 times greater than the area illuminated by an LED.
The result is that the output of the panel is very small, a few milliwatts, even allowing that the light was spread across the panel with no losses. Another way to look at it is the panel is only about 10% efficient at converting light to electrical power. The optical power from a very bright LED is of the order of a few hundred milliwatts.
If you are talking about a single solar cell of small area, say 1 or 2 cm^2, arranged so that all the energy from the LED falls on the cell, the output will be more useful as a sensor of LED brightness etc. It will work better because the areas match better. It will still only be milliwatts output. This would be more usually called a photo-diode.
It will, but not very well. LEDs do not put out the same color spectrum as the sun, and even the best “white” ones are just tuned to be pleasing to the human eye. Solar panels are optimized to work best with light from the sun, some more so than others.
There will be some combinations of specific solar panels an specific LEDs that will generate power more effectively than others, and some that will scarely generate any at all.
This is mostly of interest if you have a sentimental attachment to your solar calculator, and are considering changing the lights in your office to LEDs.
Solar panels utilize a very narrow spectrum of light from the sun. You would need to find a LED that produces the wave length of light that the solar panel needs to produce any measurable amount of electricity.
Led lights are great because they are long lasting and consumes less electricity.:,,