Abstract
An efficient red-emitting europium(III) organic complex was designed and synthesized, where ECTFBD was 1-(9-ethyl-9H-carbazol-3-yl)-4,4,4-trifluorobutane-1,3-dione and phen was 1,10-phenanthroline. exhibits a high thermal stability and excellent photoluminescence properties. The photoluminescence mechanism of the complex was proposed as a ligand-sensitized luminescence process (antenna effect). A bright red light-emitting diode (LED) was fabricated by coating the complex phosphor onto an -emitting InGaN chip, whose CIE chromaticity coordinates are close to the National Television Standard Committee standard values for red. All the results indicate that is a good candidate as a red component in the fabrication of white LEDs with a high color-rendering index.
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