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Title:
 
Phosphor Particles for Luminescent Down-Shifting in Photovoltaics: Determination of Complex Refractive Indices
 
Author(s):
 
B. Lipovsek, A. Solodovnyk, D. Riedel, A. Osvet, J. Gast, E. Stern, K. Forberich, M. Batentschuk, C.J. Brabec, J. Krc, M. Topic
 
Keywords:
 
Organic Solar Cell, Photoluminescence, Photovoltaic (PV), Modelling / Modeling, Optical Properties
 
Topic:
 
Thin Film Photovoltaics
Subtopic: Perovskite, Organic and Dye-Sensitised Devices
Event: 33rd European Photovoltaic Solar Energy Conference and Exhibition
Session: 3BO.12.1
 
Pages:
 
1037 - 1040
ISBN: 3-936338-47-7
Paper DOI: 10.4229/EUPVSEC20172017-3BO.12.1
 
Price:
 
 
0,00 EUR
 
Document(s): paper
 

Abstract/Summary:


We demonstrate a novel two-step method for accurate determination of the complex refractive indices of phosphor materials in particulate form. The real part of the refractive index is first measured at a number of selected wavelengths using the Becke Line method; the results are interpolated over a broader wavelength range using Sellmeier's equations. The imaginary part of the refractive index is extracted from measured optical characteristics of polymer layers embedded with phosphor particles; a specialized numerical simulation tool is employed for this purpose. Finally, using the determined complex refractive indices, we numerically investigate the potential of luminescent down-shifting applied to thin-film solution-processed solar cells. We study the influence of the main properties of luminescent down-shifting layers filled with phosphor particles, and indicate the gains in the solar cell performance that can be obtained using this approach.