Single-junction solar cells exhibit a bottleneck in their efficiency due to incomplete or inefficient harvesting of light in the low(IR)- or high(UV)- energy regions of the solar spectrum. Spectral converters can be used to convert solar photons into energies that are more effectively captured by the solar cell through a photoluminescence process. They are either applied directly to the surface of the solar cell or used in a concentrator architecture, where solar cells are attached to a luminescence waveguide plate.
Our group is interested in the development of novel multifunctional organic-inorganic hybrid materials for spectral conversion applications that specifically overcome the limitations of the materials traditionally employed. This includes:
- New coordination and templating approaches to control lumophore placement and orientation within the host material, thereby limiting losses due to reabsorption
- New polymer host materials for solid-state triplet-triplet annihilation upconversion
- Novel high refractive index materials to inhibit waveguide losses
- Materials design through consideration of circular economy principles
- New barrier/encapsulant materials to extend the device lifetime
Thermoresponsive Host Polymer Matrix for Self-Healing Luminescent Solar Concentrators, E. Tatsi, G. Fortunato, B. Rigatelli, G. Lyu, S. Turri, R. C. Evans and G. Griffini*, ACS Applied Energy Materials, 2020, 3, 1152-1160.
Luminescent Solar Concentrators Based on Energy Transfer from an Aggregation-Induced Emitter Conjugated Polymer, G. Lyu, J. Kendall, I. Meazzini, E Preis, S. Bayseç, U. Scherf, S. Clement, and R. C. Evans*, ACS Applied Polymer Materials, 2019, 1, 11, 3039-304.
Large Area Quantum Dot Luminescent Solar Concentrators for Use with Dye-Sensitised Solar Cells, L. J. Brennan, F. Purcell-Milton, B. McKenna, T. M. Watson, Y. K. Gun’ko, and R. C. Evans*, Journal of Materials Chemistry A, 2018, 6, 2671-2680.
Design and Response of High-Efficiency Planar Doped Luminescent Solar Concentrators using Organic-Inorganic Di-Ureasil Waveguides, A. Kaniyoor, B. McKenna, S. Comby, R. C. Evans*, Adv. Opt. Mater., 2016, 4, 444-456.