Light propagation in phosphor-filled matrices for photovoltaic PL down-shifting

Conference contribution
(Conference Contribution)


Publication Details

Author(s): Solodovnyk A, Lipovsek B, Forberich K, Stern E, Batentschuk M, Topic M, Brabec C
Publisher: SPIE
Publication year: 2014
Volume: 9205
ISBN: 9781628412321
Language: English


Abstract


Efficient transparent light converters have received lately a growing interest from optical device industries (LEDs, PV, etc.). While organic luminescent dyes were tested in PV light-converting application, such restrictions as small Stokes shifts, short lifetimes, and relatively high costs must yet be overcome. Alternatively, use of phosphors in transparent matrix materials would mean a major breakthrough for this technology, as phosphors exhibit long-term stability and are widely available. For the fabrication of phosphor-filled layers tailored specifically for the desired application, it is of great importance to gain deep understanding of light propagation through the layers, including the detailed optical interplay between the phosphor particles and the matrix material. Our measurements show that absorption and luminescent behavior of the phosphors and especially the scattering of light by the phosphor particles play an important role. In this contribution we have investigated refractive index difference between transparent binder and phosphors. Commercially available highly luminescent UV and near-UV absorbing μm-sized powder is chosen for the fabrication of phosphor-filled layers with varied refractive index of transparent polymer matrix, and well-defined particle size distributions. Solution-processed thick layers on glass substrates are optically analyzed and compared with simulation results acquired from CROWM, a combined wave optics/ray optics home-built software. The results demonstrate the inter-dependence of the layer parameters, prove the importance of careful optimization steps required for fabrication of efficient light converting layers, and, thus, show a path into the future of this promising approach.



FAU Authors / FAU Editors

Batentschuk, Miroslaw PD Dr.-Ing.
Institute Materials for Electronics and Energy Technology (i-MEET)
Brabec, Christoph Prof. Dr.
Institute Materials for Electronics and Energy Technology (i-MEET)
Forberich, Karen Dr.
Institute Materials for Electronics and Energy Technology (i-MEET)


External institutions with authors

Bayerisches Zentrum für Angewandte Energieforschung e.V. (ZAE Bayern)


How to cite

APA:
Solodovnyk, A., Lipovsek, B., Forberich, K., Stern, E., Batentschuk, M., Topic, M., & Brabec, C. (2014). Light propagation in phosphor-filled matrices for photovoltaic PL down-shifting. In Proceedings of the Reflection, Scattering, and Diffraction from Surfaces IV. San Diego, US: SPIE.

MLA:
Solodovnyk, Anastasiia, et al. "Light propagation in phosphor-filled matrices for photovoltaic PL down-shifting." Proceedings of the Reflection, Scattering, and Diffraction from Surfaces IV, San Diego SPIE, 2014.

BibTeX: 

Last updated on 2019-18-07 at 07:12