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7622108 
Journal Article 
Polycyclic aromatic hydrocarbon-bridged coumarin derivatives for organic light-emitting devices 
Li, Y; Yu, T; Su, W; Wang, Y; Zhao, Y; Zhang, Hui; , 
2020 
Yes 
Arabian Journal of Chemistry
ISSN: 1878-5352 
ELSEVIER 
AMSTERDAM 
13 
2 
4126-4133 
English 
WOS:000514837800049 
Three biscoumarin dyes bridged by polycyclic aromatic bridges (anthracen, pyrene and dibenzo[g,p]chrysene) were prepared as the emissive materials for the application of organic light-emitting devices. The relationship between their structures, photophysical properties, electrochemical properties and performances of organic light-emitting devices are described. The multilayered doped devices with a configuration of ITO/NPB (20 nm)/TBADN: biscoumarin compound (x wt%, 30 nm)/TPBi (30 nm)/Liq (2 nm)/Al (100 nm) have been successfully fabricated by vacuum-deposition method. All the devices showed green emission with high electroluminescent efficiencies. Especially, the device based on the compound containing pyrene as a bridge group at 7% doping concentration showed the best performance with a maximum brightness of 10552 cd/m(2), maximum luminous efficiency of 5.39 cd/A and maximum external quantum efficiency (EQE) of 2.35%. (C) 2019 The Authors. Published by Elsevier B.V. on behalf of King Saud University. 
Biscoumarin derivative; Dibenzo[g,p]chrysene; Electroluminescence; Photoluminescence; Polycyclic aromatic bridge