Electroplex light emission based on BCP and a novel star-shaped hexafluorenylbenzene

Tao Ma; Junsheng Yu; Shuangling Lou; Yadong Jiang; Qing Zhang

doi:10.1117/12.831022

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21 May 2009 Electroplex light emission based on BCP and a novel star-shaped hexafluorenylbenzene

Tao Ma, Junsheng Yu, Shuangling Lou, Yadong Jiang, Qing Zhang

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Proceedings Volume 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 728239 (2009) https://doi.org/10.1117/12.831022
Event: AOMATT 2008 - 4th International Symposium on Advanced Optical Manufacturing, 2008, Chengdu, Chengdu, China

Abstract

Organic light emitting diode (OLEDs) are fabricated using a novel star-shaped hexafluorenylbenzene with a simple structure of indium-tin-oxide (ITO)/1,2,3,4,5,6-hexakis(9,9-diethyl-9H-fluoren-2-yl)benzene (HKEthFLYPh):N, N'-bis-(1-naphthyl)-N,N'-diphenyl-(1,1'-biphenyl)-4,4'-diamine (NPB)/2,9-dimenthyl-4,7-diphenyl-1,10-phenanthroline (BCP)/tris(8-hydroxyquinoline) aluminum (Alq₃)/Mg:Ag by spin coating method. The electroluminescent properties of the device are characterized. The results show that there is a new peak at 600 nm, which is no appearance in PL spectra. This new emission is proposed to be electroplex that occurred at the solid-state interface between HKEthFLYPh and BCP in addition to the exciton emission from NPB. The Commissions Internationale De L'Eclairage (CIE) coordinates of the device are (x=0.33, y=0.29) at 10 V, which obviously belongs to white light emission.

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Tao Ma, Junsheng Yu, Shuangling Lou, Yadong Jiang, and Qing Zhang "Electroplex light emission based on BCP and a novel star-shaped hexafluorenylbenzene", Proc. SPIE 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 728239 (21 May 2009); https://doi.org/10.1117/12.831022

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