Polymer films doped by Coumarin 500,Coumarin 540 and Rhodamine 6G dyes were fabricated on glass.The absorption spectra,fluorescence spectra and down-conversion characteristics of these films were experimentally studied using LED and xenon lamps as illumination sources.The photons from 350 nm to 550 nm can be down-converted to photons of 580 nm by these dye-doped polymer films.Higher dopant concentrations within certain range,more photons can be down-converted.Since Nd3+ in Nd3+/Yb3+ co-doped glass has a str...
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