Improvement of Efficiency and Brightness of Red Organic Light-Emitting Devices Using Double-Quantum-Well Configuration

Chin. Phys. Lett.

2004, Vol. 21

Issue (3): 556-558 DOI:

Original Articles

Improvement of Efficiency and Brightness of Red Organic Light-Emitting Devices Using Double-Quantum-Well Configuration

MI Rui;CHENG Gang;ZHAO Yi;XIE Wen-Fa;HOU Jing-Ying;DING Tao;LIU Shi-Yong

National Laboratory of Integrated Optical Electronics, Jilin University, Changchun 130023 Department of Materials Science, Jilin University, Changchun 130023

Cite this article:

MI Rui, CHENG Gang, ZHAO Yi et al 2004 Chin. Phys. Lett. 21 556-558

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Abstract We present red double-quantum-well organic light-emitting devices (DQW-OLEDs), in which N,N-bis-(1-naphthyl)-N,N'-diphenyl-1,1'-biphenyo-4,4'-diamine (NPB) is used as potential barriers and hole transport layer, 4-(dicyanome-thylene)-2-t-butyl-6-(1,1,7,7-thtramethyljulolidyl-9-enyl)-4H-pyran (DCJTB) doped tris (8-hydroxyquinoline) aluminium (Alq₃) as potential wells and emitter, undoped Alq₃ as electron transport layer, respectively. The turn-on voltage is about 4 V. The maximum brightness and electroluminescent (EL) efficiency of the DQW device can reach 5916 cd m^-2 at 16 V and 2.85 cd A^-1 at 7 V, respectively. In addition, the EL efficiency of the DQW device is relatively independent of the drive voltage in the range from 5 V to 16 V.

Keywords: 78.60.Fi 78.66.Qn 85.60.Jb

Published: 01 March 2004

PACS:	78.60.Fi	(Electroluminescence)
	78.66.Qn	(Polymers; organic compounds)
	85.60.Jb	(Light-emitting devices)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2004/V21/I3/0556

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	MI Rui
	CHENG Gang
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	XIE Wen-Fa
	HOU Jing-Ying
	DING Tao
	LIU Shi-Yong

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