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High-Efficiency White Organic Light-Emitting Devices Based on Multiple Quantum-Well Structure |
DUAN Yu;HOU Jing-Ying;WU Zhi-Jun;CHENG Gang;ZHAO Yi;LIU Shi-Yong |
National Laboratory of Integrated Optoelectronics, Jilin University, Changchun 130023
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Cite this article: |
DUAN Yu, HOU Jing-Ying, WU Zhi-Jun et al 2004 Chin. Phys. Lett. 21 534-536 |
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Abstract We report the white organic-light devices (WOLEDs) employing a multiple quantum-well (MQW) structure, which consist of alternate layers of 4,48-bis(2,28-diphenylvinyl)-1,18-biphenyl (DPVBi) and (DPVBi:rubrene) as the potential barrier and the potential well, respectively. The results demonstrate that the MQW structure can prominently increase the performance of WOLEDs; the double quantum well device exhibits the efficiency up to 5.4 cd/A, and yields a peak luminance of 14206 cd/m2. It is also interesting to find that the MQW structure can enhance the colour stability of WOLEDs at different voltages.
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Keywords:
73.61.Ph
78.60.Fi
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Published: 01 March 2004
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