Highly transmissive luminescent down-shifting layers filled with phosphor particles for photovoltaics

作者：Solodovnyk Anastasiia^*; Forberich Karen; Stern Edda; Krc Janez; Topic Marko; Lipovsek Benjamin; Brabec Christoph J

来源：Optical Materials Express, 2015, 5(6): 1296-1305.

DOI：10.1364/OME.5.001296

We study the optical properties of polymer layers filled with phosphor particles in two aspects. First, we used two different polymer binders with refractive indices n = 1.46 and n = 1.61 (lambda = 600 nm) to study the influence of Delta n with the phosphor particles (n = 1.81). Second, we prepared two particle size distributions D-50 = 12 mu m and D50 = 19 mu m. The particles were dispersed in both polymer binders in several volume concentrations and coated with thicknesses of 150-600 mu m onto glass substrates. Experimental results and numerical simulations show that the layers of the higher refractive index binder with larger particles result in the highest optical transmittance in the visible light spectrum. Finally, we used numerical simulations to determine optimal layer composition for application in realistic photovoltaic devices.

• 出版日期2015-6-1