Experiments are described illustrating enhanced photon trapping and efficient energy transfer in mixed-dye planar solar concentrators containing, for example, Rhodamine 6G and Coumarin 6. These concentrators intercept more of the solar spectrum to give an enhanced photon-flux gain that exceeds the single-dye concentrator. It is also shown that the energy absorbed by the donor dye is transferred efficiently into the emitting acceptor by two competing processes.
© 1977 Optical Society of America
Original Manuscript: May 6, 1977
Published: August 1, 1977
B. A. Swartz, T. Cole, and A. H. Zewail, "Photon trapping and energy transfer in multiple-dye plastic matrices: an efficient solar-energy concentrator," Opt. Lett. 1, 73-75 (1977)