Optical Efficiency of Luminescent Solar Concentrator Based on Oxyfluoride Glass with Molecular Silver Clusters

Oxyfluoride glass with luminescent molecular clusters of silver is shown to be promising as a luminescent solar concentrator (LSC) for the conversion of the solar UV radiation into visible radiation or as the first cascade of a multilayer LSC. Experimental data on the absorption and luminescence of the given glass are used for the numerical simulation. The spectral optical efficiency of LSC reaches 17.7% for a wavelength range of 310–475 nm, and the integral intensity reaches 12%. A mirror reflector on the side faces increases the efficiency of LSC. Decreasing the LSC thickness and increasing its surface enhance the degree of photon concentration.