Blue Organic Light-Emitting Diodes Based on Solution-Processed Fluorene Derivative
We report blue fluorescent organic light-emitting devices (OLED) by solution process utilizing a blue emitting small molecule, 2,7-bis[(9-ethyl-9H-carbazol-3-yl)ethenyl]-9,9-bis(4-n-octyloxyphenyl)-9H-fluorene (CB), which has good solubility in common organic solvent. The peak positions of absorption and emission spectra of a new fluorene-based molecule in tetrahydrofuran solution were observed at 399 and 439 nm, respectively. We achieved a maximum luminous efficiency of ∼3 cd/A with CIE color coordinates of (0.15, 0.15) in our device.
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Document Type: Research Article
Publication date: 2010-10-01
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