Care was taken to exclude any examples that used engineering approaches to enhance the LSC performance, e.g., the use of reflective or scattering layers on the bottom or exposed edges. The important parameters from each study were: LSC dimensions, LR305 concentration, refractive index, waveguide parasitic absorption, light source spectrum, and edge emission measurement methodology (see Table for values). The parameters were input into pvTrace-v2.1.sv and simulated with 10,000 rays. If the experimental study used PV cells to measure efficiency, the surface normal method was used, otherwise the enclosing box method was used. The results of the comparison are shown in Figure .