Improved luminescent properties of novel nanostructured Eu3+ doped yttrium borate synthesized with carbon nanotube templates

Compared with the sample without additive carbon nano-tube during synthesis, the sample with carbon nano-tube exhibited an extra excitation band at 281 nm, the intensity ratio between red (5D0−7F2) and orange (5D0−7F1) was increased from 1.1 to 3.66, and the CIE coordination changed from (0.655, 0.346) to (0.67, 0.33) (almost the same as that (0.665, 0.334) for commercial red phosphors Y2O2S:Eu3+, satisfying the requirement for red phosphors). These results indicate that the luminescent properties can be improved by carbon nano-tube template, which to our knowledge has not been reported before.