Lee, TW Park, OO Kim, J Kim, YC 2024-01-21T10:04:47Z 2024-01-21T10:04:47Z 2021-09-01 2002-10 0897-4756 https://pubs.kist.re.kr/handle/201004/139196 The optical properties of a soluble fullerene (C-60)-containing copolymer, (PS)(x)C-60(PMMA)(y), were investigated. We employed the (PS)(x)C-60(PMMA)(y) in a polymer electroluminescent device as a hole-injecting layer. The forward-biased ITO/poly[2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylenevinylene]/(PS)(x)C-60(PMMA)(y)/Al device showed strongly quenched electroluminescence. In contrast, when the device was operated in reverse-bias direction, the luminescence and the yield were enhanced. The turn-on voltage of the reverse-biased device was -2.6 V. The quantum efficiency and the emitted light power were improved by approximate to5 and; approximate to20 times, respectively, compared with those of the single-layer device. English AMER CHEMICAL SOC LIGHT-EMITTING-DIODES QUANTUM EFFICIENCY CONDUCTING POLYMER C-60 EMISSION IONOMERS SPECTRA LAYER ZONE Application of a novel fullerene-containing copolymer to electroluminescent devices Article 10.1021/cm020369i 1 CHEMISTRY OF MATERIALS, v.14, no.10, pp.4281 - 4285 CHEMISTRY OF MATERIALS 14 10 4281 4285 scie scopus 000178782900041 2-s2.0-0036797326 Chemistry, Physical Materials Science, Multidisciplinary Chemistry Materials Science Article LIGHT-EMITTING-DIODES QUANTUM EFFICIENCY CONDUCTING POLYMER C-60 EMISSION IONOMERS SPECTRA LAYER ZONE fullerene