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Journal of Photonics for Energy

2,5-Dicarbazole-functioned siloles with aggregation-enhanced emission for application in organic light-emitting diodes
Author(s): Long Chen; Han Nie; Bin Chen; Gengwei Lin; Wenwen Luo; Rongrong Hu; Fei Huang; Anjun Qin; Zujin Zhao; Ben Zhong Tang
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Paper Abstract

2,3,4,5-Tetraarylsiloles are efficient solid-state luminescent materials with good electron-transporting ability. Substitution at the 2,5-positions of silole rings produce various outstanding functional materials that can be used as active layers in organic light-emitting diodes (OLEDs). In this work, two 2,5-dicarbazole-substitued siloles, (2-Cz)2MTPS and (3-Cz)2MTPS, are facilely synthesized and fully characterized. Their thermal, photophysical, electrochemical, and electroluminescent properties are investigated systematically. The results show that these 2,5-dicarbazole-functined siloles are thermally stable and feature aggregation-enhanced emission characteristics with high solid-state photoluminescence efficiencies. Nondoped OLEDs [ITO/N,N'-di(1-naphthyl)-N,N'-diphenyl-benzidine (NPB) (60 nm)/emitter (20 nm)/TPBi (40 nm)/LiF (1 nm)/Al (100 nm)] fabricated by adopting (2-Cz)2MTPS and (3-Cz)2MTPS as light-emitting layers exhibit good performances, with high luminance of 28240  cd m−2 and electroluminescence efficiency of 4.5  cd A−1.

Paper Details

Date Published: 16 December 2015
PDF: 10 pages
J. Photon. Energy 5(1) 053598 doi: 10.1117/1.JPE.5.053598
Published in: Journal of Photonics for Energy Volume 5, Issue 1
Show Author Affiliations
Long Chen, South China Univ. of Technology (China)
Han Nie, South China Univ. of Technology (China)
Bin Chen, South China Univ. of Technology (China)
Gengwei Lin, South China Univ. of Technology (China)
Wenwen Luo, South China Univ. of Technology (China)
Rongrong Hu, South China Univ. of Technology (China)
Fei Huang, South China Univ. of Technology (China)
Anjun Qin, South China Univ. of Technology (China)
Zujin Zhao, South China Univ. of Technology (China)
Ben Zhong Tang, South China Univ. of Technology (China)
Hong Kong Univ. of Science and Technology (China)


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