Abstract
In a Luminescent Solar Concentrator, short-wavelength light is converted by a luminescent material into longwavelength
light, which is light guided towards a photovoltaic cell. In principle, a Luminescent Solar Concentrator
allows for high concentration, since the heat generated by the conversion process can be used to lower the entropy of
light. However, less controlled loss mechanisms prevent high concentration factors in practice. One important loss
mechanism is the escape of luminescent radiation into directions that do not stay inside the light guide. To reduce this
amount, wavelength-selective filters can be applied that reflect the luminescent radiation back into the light guide while
transmitting the incident sunlight. However, a filter optimized for reflecting as much as possible luminescent radiation
will reflect part of the incident sunlight at high angles. Depending on the luminophore properties, it may be possible to
design a suitable filter. In this paper, the interdependence of the luminophore and filter properties will be clarified and
quantified using simulations. Optimal luminophore-filter combinations will be discussed, as well as the feasibility to
realize them in practice.
