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Proceedings Paper

Study on electroluminescent characteristics of two novel fluorene/carbazole copolymers
Author(s): Fan Suo; Junsheng Yu; Jing Deng; Yadong Jiang; Rui Wang; Tianxi Liu
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Paper Abstract

The electroluminescent (EL) characteristics of two novel fluorene/carbazole copolymers are reported in the paper. Four devices with different structures were fabricated. The polymeric organic thin films were prepared by spin-coating technique. The electroluminescent characteristics of devices were investigated. The results showed that the EL spectra peaks of the devices without bathocuproine (BCP) layer were all located at the region of 520 nm±5 nm, which showed that light emission came from Alq3, and polymers here played only the role as hole transporting layer (HTL). The maximum luminance of these two devices was 1831 cd/m2. The EL spectra peaks of the devices with bathocuproine (BCP) layer were almost located at 425 nm, which were consistent with the characterizing spectrum of copolymers, indicating that the polymer films were emitting layers in the device structures. Alq3 acted here only as electron transporting layer (ETL).The maximum luminance of these devices were 1416cd/m2 for PFC1 and 1208 cd/m2 for PFC2. It was concluded that the inserting of bathocuproine (BCP) layer changed the recombination zone of excitons in devices and thus changed the emitting site. These two copolymers can be used not only as alternative HTL materials, but also as promising emitting materials for blue light OLEDs.

Paper Details

Date Published: 29 November 2007
PDF: 7 pages
Proc. SPIE 6722, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 672234 (29 November 2007); doi: 10.1117/12.783380
Show Author Affiliations
Fan Suo, Univ. of Electronic Science and Technology of China (China)
Junsheng Yu, Univ. of Electronic Science and Technology of China (China)
Jing Deng, Univ. of Electronic Science and Technology of China (China)
Yadong Jiang, Univ. of Electronic Science and Technology of China (China)
Rui Wang, Fudan Univ. (China)
Tianxi Liu, Fudan Univ. (China)


Published in SPIE Proceedings Vol. 6722:
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies

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