solar panels power output
why does green light no give me a good power output for a solar panel compared to red and blue?
i carried out an experiment using different coloured solutions to see the affect of wavelength on power output from a silicon photovoltaic solar panel. I was expecting to see a peak where the efficiency of the wavelength and the energy of the photons were optimum. However instead i found that from wavelength in the blue region it was a fairly high power output which then decreased towards the green region and then increased even higher in the red region. I have made sure i kept the intensities of the different wavelengths constant. What could be the cause for this dip in the green wavelength region?
Silicon solar panels have their greatest sensitivity at the red end of the visible spectrum and in the near infrared. By contrast, the human eye is relatively more sensitive to the green part of the spectrum. Neither silicon nor human eyes are especially sensitive to the relatively short blue wavelengths, but your blue solution may also transmit a significant amount of red or infrared light, giving a comparatively high reading for the silicon’s “blue” sensitivity.
Kyocera Releases Solar Panel With Output of 238.1 W : DigInfo
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