Organic single-quantum-well electroluminescent device |
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Authors: | Huang Jingsong Xie Zhiyuan Yang Kaixia Li Chuannan Liu Shiyong Wu Fang Tian Wenjing Shen Jiacong |
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Institution: | (1) National Lab of Integrated Optoelectronics, Jilin University, Changchun, 130023, People's Republic of China;(2) Key Lab of Supramolecular Structure and Spectroscopy, Jilin University, Changchun, 130023, People's Republic of China |
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Abstract: | A new kind of single-quantum-well electroluminescent (EL) device consists of a hole transport N,N-Bis(3-methyphenyl)-N,N-diphenylbenzidine(TPD) layer, and electron transport 8-(quinolinolate)-aluminum(Alq) layer and a light emitting layer of Alq doped with 5,6,11,12-tetraphenylnaphthacene (rubrene) has been fabricated by the multisource-type high-vaccum organic molecular deposition. The dopant rubrene is as a potential well, and the undoped Alq layer is as a barrier layer. The EL spectra shows the spectral narrowing and the emission peak energy blue-shift, and the efficiency and luminance of the device have been significantly improved. The experimental phenomena is explained as the result of recombination of carriers from the quantized energy state. |
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Keywords: | electroluminescence organic quantum-well |
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