polyfluorene;
carbazole;
copolymer;
blue electroluminescence;
D O I:
10.1142/S0218863504002390
中图分类号:
O43 [光学];
学科分类号:
070207 ;
0803 ;
摘要:
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.
机构:
Institute of Materials Research and Engineering, 3 Research Link, Singapore 117602, SingaporeInstitute of Materials Research and Engineering, 3 Research Link, Singapore 117602, Singapore
Ke, Lin
Tang, Weihua
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机构:
Institute of Materials Research and Engineering, 3 Research Link, Singapore 117602, SingaporeInstitute of Materials Research and Engineering, 3 Research Link, Singapore 117602, Singapore
Tang, Weihua
Song, Yang
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机构:
Center of Optoelectronics, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, SingaporeInstitute of Materials Research and Engineering, 3 Research Link, Singapore 117602, Singapore
Song, Yang
Chen, Zhi Kuan
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机构:
Institute of Materials Research and Engineering, 3 Research Link, Singapore 117602, SingaporeInstitute of Materials Research and Engineering, 3 Research Link, Singapore 117602, Singapore
Chen, Zhi Kuan
Chua, Soo Jin
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h-index: 0
机构:
Institute of Materials Research and Engineering, 3 Research Link, Singapore 117602, Singapore
Center of Optoelectronics, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, SingaporeInstitute of Materials Research and Engineering, 3 Research Link, Singapore 117602, Singapore