Why can we build an equivalent to a LSC but with a passive scattering mechanism replacing the luminescent material?
Assume you build a LSC with a scatterer instead of a luminescent material: light scattered at the first particle will be scattered at the next particle and so on and will probably leave the plate soon. With a luminescent material all photons emitted more or less parallel to the longer dimension of the plate will reach the solar cell directly and photons within the angle of total reflection will reach, after several reflections, the solar cell too. With a scatterer you will loose all these photons.
I see. So the only advantage of LSC is the parallely emitted photons since confinement of the rest is determined by total internal reflection for both LSC and scattering concentrator. This is not much for a relatively flat device, does this justifies the additional thermalization and losses involved with absorption and reemission processes?
Dear D.B. Jani, thanks, very instructive lesson. Kind regards Martin Forster.
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