| 光谱学与光谱分析 |
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| Properties of Phosphorescent Organic Light-Emitting Diodes with Different Doping Order on Light Emitting Layer |
| ZHANG Wei, ZHANG Fang-hui*, HUANG Jin |
| School of Electric and Information Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China |
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Abstract Utilizing GIr1(green) and R-4B(red) phosphorescent dye, organic light-emitting diodes with different doping orders on red and green light-emitting layers were fabricated. The authors investigated the luminescent properties of devices combined with the effect of electron (TCTA) and hole (BCP) blocking layer. The results showed that the great impacts on spectrum, light efficiency, luminance and luminescent color were produced based on different doping order, and the authros also found the strong emission peak at the interface of the BCP and CBP layer. With the use of the red and green doping type, 0.527 mA·cm-2, 104 cd·m-2, 19.75 cd·A-1 and (0.371 7，0.576 8) could be reached, respectively. The reasons were that on the one hand, because of large difference between energy levels of host material CBP and doping material GIr1, R-4B, and charge trapping and hopping via dopants were the main mechanism of change; on the other hand, for the different energy levels between dopants and blocking layers, the doping sequence could affect barrier distribution, and then affect the electric field distribution.
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Received: 2012-12-29
Accepted: 2013-03-20
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Corresponding Authors:
ZHANG Fang-hui
E-mail: zhangfanghui@sust.edu.cn
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[1] Shuming C, Hoi-Sing K. Org. Electron., 2012, 13(1): 31.
[2] Ines R M, Sebastian S, Bjrn L, et al. Org. Electron., 2012, 12(2): 341.
[3] Yang S H, Hong B C, Huang S F. Appl. Phys. Lett., 2009, 105(11): 113105.
[4] CHEN Jin-xin, HUANG Xiao-wen(陈金鑫，黄孝文). Organic Electroluminescent Material and Devices(OLED有机电致发光材料与器件). Beijing: Tsinghua University Press(北京：清华大学出版社), 2011. 1.
[5] Xiao J, Wang X X, Zhu H, et al. Appl. Phys. Lett., 2012, 101(1): 013301.
[6] Soon O J, Kyoung S Y, Chul W J, et al. Thin Solid Films, 2010, 518(14): 3716.
[7] Xia C Y, Wang X M, Lin J, et al. Synthetic Metals, 2009, 159(3): 194.
[8] Florian L, Manuel B, Philipp V G, et al. Appl. Phys. Lett., 2011, 98(17): 173304.
[9] Sung H K, Kyoung S Y, Jun Y L et al. Journal of Luminescence, 2009, 129(4): 389.
[10] Sung H K, Jyongsik J, Jun Y L. Appl. Phys. Lett., 2007, 91(12): 123509.
[11] Zhao F C, Zhang Z Q, Liu Y P, et al. Org. Electron., 2012, 13(6): 1049.
[12] Kroger M, Hamwi S, Meyer J, et al. Appl. Phys. Lett., 2009, 95(12): 123301.
[13] Chang W S, Jin H Y, Kun Y L. Org. Electron., 2012, 13(2): 341. |
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