Blue organic light-emitting diodes based on solution-processed fluorene derivative |
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Authors: | Cho Namchul Choi Byoung-Ki Suh Hwansoo Park Jong-Jin Kim Jong-Min Lee Kwang-Sup |
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Affiliation: | Department of Advanced Materials, Hannam University, Daejeon 305-701, Korea. |
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Abstract: | 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 approximately 3 cd/A with CIE color coordinates of (0.15, 0.15) in our device. |
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