# Tag Info

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You'll usually find these data in the Supplementary Information of relevant papers. If you find a paper where they've made such measurements, but don't give them in supplementary information, you can email the contact author, with a couple of paragraphs explaining what data you're after, and what use you'll put it to. For example, here's the Supplementary ...

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"Other sources say that photons create electron-hole pairs.": Electrons have mass. Creating them even if possible would need a great deal of energy. So this is not what happens when a photon creates electric current in a substance.

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In theory, you could get almost $100\%$ efficiency from a solar cell exposed to light with the photon energy just above the band gap. Each absorbed photon generates an electron of almost the same energy. The problem is that there are only so many band gaps available, so you have to find a light source at the correct wavelength to match one. The intensity ...

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The Wikpedia article on solar cell efficiency gives a number of reasons that solar cells are less than 100% efficient. One of the large ones is the thermodynamic limit-a photon of less energy (longer wavelength) than the silicon band gap cannot produce an electron and one with higher energy can only produce as much voltage as the band gap. Even if you ...

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No energy conversion process completes at 100% efficiency. Using the sun, gasoline or nuclear, none of these will generate power at 100% of total potential power available. That figure of 1KW/m^2 is for total available light energy correct? Due to how solar panels work (I don't think I have enough knowledge to speak on this part directly) solar panels are ...

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I come across this cause I am working on this problem. I see long talk and they don't know the answer. Yes, the energy is lost, when all systems are fully charged and outside the sun is still shining. No meter PWM or MPPT charging system. You just cant put more into batteries when its full. Full means full. Solution is ultracapcitors. Assemble a capacitor ...

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