Synthesis and optoelectronic properties of amino-functionalized carbazole-based conjugated polymers |
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| Authors: | ShengJian Liu ZhiPeng Zhang DongCheng Chen ChunHui Duan JunMing Lu Jie Zhang Fei Huang ShiJian Su JunWu Chen Yong Cao |
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| Institution: | 14864. State Key Laboratory of Luminescent Materials and Devices; Institute of Polymer Optoelectronic Materials & Devices, South China University of Technology, Guangzhou, 510640, China
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| Abstract: | A series of alcohol soluble amino-functionalized carbazole-based copolymers were synthesized via Suzuki coupling reaction. The pendent amino groups endow them high solubility in polar solvents, as well as efficient electron injection capability from high work-function metals. The relationships between the photophysical and electrochemical properties and the polymer backbone structure were systematically investigated. These alcohol-soluble carbazole-based copolymers were used as cathode interlayers between the high work-function metal Al cathode and P-PPV emissive layer in polymer light-emitting diodes with device structure of ITO/PEDOT:PSS/P-PPV/interlayer/Al. The resulting devices exhibited improved performance due to the better electron injection/transporting ability of the designed copolymers from Al cathode to the light-emitting layer. |
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