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Properties of white organic electroluminescent devices based on a new organic metal complex with quantum well structure

Liu Xu-Guang Meng Wei-Xin Hao Yu-Ying Xu Hui-Xia Wang Hua Xu Bing-She

Properties of white organic electroluminescent devices based on a new organic metal complex with quantum well structure

Liu Xu-Guang, Meng Wei-Xin, Hao Yu-Ying, Xu Hui-Xia, Wang Hua, Xu Bing-She
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  • A series of white organic electroluminescent devices with a quantum well structure were fabricated based on a new type of organic metal complex bis(2-(4-trifluoromethyl-2-hydroxyphenyl) benzothiazolate) zinc (Zn(4-TfmBTZ)2) by electroplex at NPB/Zn(4-TfmBTZ)2 interface. The results show that the introduction of the hetero-junction quantum well structure can increase effectively the efficiency of electroplex emission, color rendering index(CRI),and the color coordination stability. The optimized device ITO/NPB (60 nm)/Zn(4-TfmBTZ)2(3.0 nm)/NPB (4.0 nm)i> /Zn(4-TfmBTZ)2(30 nm) /Alq3 (30 nm)/LiF(1.5 nm)/Al(150 nm) is obtained with color coordinates of (0.324, 0.337), the highest CRI of 92.5, a maximal brightness of 2013 cd/m2, and a maximal efficiency of 1.03 cd/A,. This device shows very high color stability when the driving voltage is varied from 10 V to 14 V.
    • Funds:
    [1]

    Reineke S, Lindner F, Schwartz G, Seidler N, Walzer K, Lüssem B, Leo L 2009 Nature 459 234

    [2]

    Sun Y, Giebink N C, Kanno H, Ma B, Thompson M E, Forrest S R 2006 Nature 440 908

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    Wang Q, Ding J, Ma D, Cheng Y, Wang L, Wang F 2009 Adv. Mater. 21 2397

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    Wu X M, Hua Y L, Yin S G, Zhang G H, Hui J L, Zhang L J, Wang Y, 2008 Acta Phys. Sin. 57 1150 (in Chinese)[吴晓明、华玉林、 印寿根、 张国辉、 惠娟利、 张丽娟、 王 宇2008 物理学报 57 1150]

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    Wang B Z, Zhang A Q, Wu H B, Yang W, Wen S S 2010 Acta Phys. Sin. 59 4240 (in Chinese)[王保争、张安琪、吴宏滨、杨 伟、文尚胜2010物理学报 59 4240]

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    Cocchi M, Kalinowski J, Murphy L, Williams J A G, Fattori V 2010 Org. Electron. 11 388

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    Kalinowski J, Cocchi M, Virgili D, Fattori V, Williams J A G 2007 Adv. Mater. 19 4000

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    Chen S F, Wu Z J, Zhao Y, Li C N, Hou J Y, Liu S Y 2005 Org. Electron. 6 111

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    Zhu J Z, Li W L, Han L L, Chu B, Zhang G, Yang D F, Chen Y R, Su Z S, Wang J B, Wu S H, Tsuboi T 2009 Opt. Lett. 34 2946

    [10]

    Yang S, Jiang M 2009 Chem. Phys. Lett. 484 54

    [11]

    Zhu H, Xu Z, Zhang F, Zhao S, Wang Z,Song D2009 Synth. Met. 159 2458

    [12]

    Finlayson C E, Kim J S, Liddell M J, Friend R H, Jung S H, Grimsdale A C, Müllen K 2008 J. Chem. Phys. 128 044703

    [13]

    Yang C C, Hsu C J, Chou P T, Cheng H C, Su Y O, Leung M K 2010 J. Phys. Chem. B 114 756

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    Yang S, Zhang X, Hou Y, Deng Z, Xu X 2007 J. Appl. Phys. 101 096101

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    Hao Y Y, Meng W X, Xu H X, Wang H, Liu X G, Xu B S 2010 Org. Electron. 12 136

    [18]

    Song S F, Zhao D W, Xu Z, Xu X R 2007 Acta Phys. Sin. 56 3499 (in Chinese) [宋淑芳、 赵德威、 徐 征、 徐叙瑢 2007 物理学报 56 3499]

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    Fujita S, Nakazawa T, Asano M 2000 Jpn. J. Appl. Phys. 39 5301

  • [1]

    Reineke S, Lindner F, Schwartz G, Seidler N, Walzer K, Lüssem B, Leo L 2009 Nature 459 234

    [2]

    Sun Y, Giebink N C, Kanno H, Ma B, Thompson M E, Forrest S R 2006 Nature 440 908

    [3]

    Wang Q, Ding J, Ma D, Cheng Y, Wang L, Wang F 2009 Adv. Mater. 21 2397

    [4]

    Wu X M, Hua Y L, Yin S G, Zhang G H, Hui J L, Zhang L J, Wang Y, 2008 Acta Phys. Sin. 57 1150 (in Chinese)[吴晓明、华玉林、 印寿根、 张国辉、 惠娟利、 张丽娟、 王 宇2008 物理学报 57 1150]

    [5]

    Wang B Z, Zhang A Q, Wu H B, Yang W, Wen S S 2010 Acta Phys. Sin. 59 4240 (in Chinese)[王保争、张安琪、吴宏滨、杨 伟、文尚胜2010物理学报 59 4240]

    [6]

    Cocchi M, Kalinowski J, Murphy L, Williams J A G, Fattori V 2010 Org. Electron. 11 388

    [7]

    Kalinowski J, Cocchi M, Virgili D, Fattori V, Williams J A G 2007 Adv. Mater. 19 4000

    [8]

    Chen S F, Wu Z J, Zhao Y, Li C N, Hou J Y, Liu S Y 2005 Org. Electron. 6 111

    [9]

    Zhu J Z, Li W L, Han L L, Chu B, Zhang G, Yang D F, Chen Y R, Su Z S, Wang J B, Wu S H, Tsuboi T 2009 Opt. Lett. 34 2946

    [10]

    Yang S, Jiang M 2009 Chem. Phys. Lett. 484 54

    [11]

    Zhu H, Xu Z, Zhang F, Zhao S, Wang Z,Song D2009 Synth. Met. 159 2458

    [12]

    Finlayson C E, Kim J S, Liddell M J, Friend R H, Jung S H, Grimsdale A C, Müllen K 2008 J. Chem. Phys. 128 044703

    [13]

    Yang C C, Hsu C J, Chou P T, Cheng H C, Su Y O, Leung M K 2010 J. Phys. Chem. B 114 756

    [14]

    Yang S, Zhang X, Hou Y, Deng Z, Xu X 2007 J. Appl. Phys. 101 096101

    [15]

    Zhang W, Yu J S, Huang J, Jiang Y D, Zhang Q, Cao K L 2010 Chin. Phys. B 19 047802

    [16]

    Xu B S, Xu H X, Fang X H, Chen L Q, Wang H, Hao Y Y2009 China Patent 200910073701.7

    [17]

    Hao Y Y, Meng W X, Xu H X, Wang H, Liu X G, Xu B S 2010 Org. Electron. 12 136

    [18]

    Song S F, Zhao D W, Xu Z, Xu X R 2007 Acta Phys. Sin. 56 3499 (in Chinese) [宋淑芳、 赵德威、 徐 征、 徐叙瑢 2007 物理学报 56 3499]

    [19]

    Fujita S, Nakazawa T, Asano M 2000 Jpn. J. Appl. Phys. 39 5301

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  • Received Date:  21 December 2010
  • Accepted Date:  04 January 2011
  • Published Online:  15 September 2011

Properties of white organic electroluminescent devices based on a new organic metal complex with quantum well structure

  • 1. (1)College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China; (2)Department of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, China; (3)Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Taiyuan 030024, China

Abstract: A series of white organic electroluminescent devices with a quantum well structure were fabricated based on a new type of organic metal complex bis(2-(4-trifluoromethyl-2-hydroxyphenyl) benzothiazolate) zinc (Zn(4-TfmBTZ)2) by electroplex at NPB/Zn(4-TfmBTZ)2 interface. The results show that the introduction of the hetero-junction quantum well structure can increase effectively the efficiency of electroplex emission, color rendering index(CRI),and the color coordination stability. The optimized device ITO/NPB (60 nm)/Zn(4-TfmBTZ)2(3.0 nm)/NPB (4.0 nm)i> /Zn(4-TfmBTZ)2(30 nm) /Alq3 (30 nm)/LiF(1.5 nm)/Al(150 nm) is obtained with color coordinates of (0.324, 0.337), the highest CRI of 92.5, a maximal brightness of 2013 cd/m2, and a maximal efficiency of 1.03 cd/A,. This device shows very high color stability when the driving voltage is varied from 10 V to 14 V.

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