Kim, JK Hong, SI Cho, HN Kim, DY Kim, CY 2024-01-21T18:40:25Z 2024-01-21T18:40:25Z 2021-09-05 1997-02 0170-0839 https://pubs.kist.re.kr/handle/201004/143969 An alternating copolymer composed of 9,9'-dihexylfluorene and N-2-ethylhexyl carbazole was synthesized to use as an emissive polymer in a light-emitting diode(LED). The copolymer is soluble in organic solvents and spin-cast to make a fine film. An LED fabricated by sandwiching the alternating copolymer between indium-tin oxide and aluminum emits a white color with the full width at half maximum of 150 nm. The electroluminescence spectrum becomes simplified to have an emission peak at 460 nm for fine blue color when the copolymer is blended with poly(vinylcarbazole) with a ratio of 1 to 4 before the use as an emissive layer. The forward bias turn-on voltage for the LED is 13, and quantum efficiency is 0.002%. English SPRINGER VERLAG An alternating copolymer for a blue light-emitting diode Article 10.1007/s002890050034 1 POLYMER BULLETIN, v.38, no.2, pp.169 - 176 POLYMER BULLETIN 38 2 169 176 N scie scopus A1997WF93800008 2-s2.0-0000701517 Polymer Science Polymer Science Article ELECTROLUMINESCENT DIODES POLYMERS soluble alternating copolymer