Organic ElectronicsNo Access

LIGHT-EMITTING PROPERTIES OF FLUORENE-BASED COPOLYMERS

DO-HOON HWANG

Department of Applied Chemistry, Kumoh National Institute of Technology, Kumi 730-701, Korea

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JONG-DON LEE

Department of Applied Chemistry, Kumoh National Institute of Technology, Kumi 730-701, Korea

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MOO-JIN PARK

Department of Applied Chemistry, Kumoh National Institute of Technology, Kumi 730-701, Korea

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JI-HOON LEE

Department of Polymer Science and Engineering, Chungju National University, Chungju 380-702, Korea

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CHANG-HEE LEE

Department of Electrical Engineering and Computer Science, Seoul National University, Seoul 151-744, Korea

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https://doi.org/10.1142/S0218863504002390Cited by:1 (Source: Crossref)

Abstract

A series of random copolymers of 2,7-dibromo-9,9-bis(4′-n-octyloxyphenyl) fluorene (BOPF) and 2,7-dibromo-N-(2′-ethylhexyl)carbazole (EHC) were synthesized through Ni(0)-mediated polymerization. Carbazole comonomer was introduced to improve the hole-transporting properties of PBOPF. The synthesized poly(BOPF-co-EHC)s showed similar UV-visible absorption and PL emission to PBOPF. EL devices were fabricated in an ITO/PEDOT/polymer/Ca/Al configuration. EL devices which used copolymers showed improved device performance over devices which used PBOPF homopolymers due to a more balanced charge transport.

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