A Transparent Planar Concentrator Using Aggregates of gem-Pyrene Ethenes
James L Banal, Jonathan M White, Tin Wai Lam, Andrew W Blakers, Kenneth P Ghiggino, Wallace WH Wong
ADVANCED ENERGY MATERIALS | WILEY-V C H VERLAG GMBH | Published : 2015
The luminescence properties of pyrene ethenes, both as monomer and aggregate species, are found to depend on the regioisomer structure. Systematic shifts in absorption, emission, and excitation spectra of the gem-pyrene ethenes, both in solution and in rigid polymer hosts, are consistent with weakly interacting H-aggregate formation. This aggregation leads to excimer-like emission with Stokes shifts greater than 1 eV. Planar concentrators fabricated from gem-pyrene diphenylethenes show comparable performance to previously reported inorganic phosphors. The UV absorption and emission properties of the planar concentrator devices exhibit potential for transparent solar concentrators or visible-..View full abstract
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Awarded by Australian Research Council
J.L.B. would like to thank Prof. Frank Spano for useful discussions on aggregate photophysics and Dr. Lars Goerigk for helpful comments on DFT calculations. This work was made possible by support from the Australian Renewable Energy Agency which funds the project grants within the Australian Centre for Advanced Photovoltaics. W.W.H.W. was supported by an Australian Research Council Future Fellowship (FT130100500). J.L.B. acknowledges an Australian Postgraduate Award and the Eugen Singer Award from the University of Melbourne for financial support. Responsibility for the views, information, or advice herein is not accepted by the Australian Government.