Enhancing the light conversion efficiency in a luminescent solar concentrator by using a prism film

We present a method for enhancing the light conversion efficiency of a luminescent solar concentrator by putting a prism film on the upper surface for receiving the incoming light. The luminescent solar concentrator under study was composed of a thick glass with a luminescent film deposited on the top surface and a solar cell attached to the lateral surface. The prism film will deflect the incident light into two different directions. Dependence of the conversion efficiency on the incident angle of the sunlight and influence of the rotation of the prism film on the conversion efficiency were also investigated. Experimental results show that the prism film will increase the light falling on the solar cell in our luminescent solar concentrator.