Optimized Performances of Thick Film Organic Lighting-Emitting Diodes

  • Received Date: May 26, 2008
  • Published Date: November 30, 2008
  • The performance of organic light-emitting diodes (OLEDs) with thick film is optimized. The alternative vanadium oxide (V2O5) and N,N'-di(naphthalene-1-yl)-N,N'-diphenyl-benzidine (NPB) layers are used to enhance holes in the emissive region, and 4,7-dipheny-1,10-phenanthroline (Bphen) doped 8-tris-hydroxyquinoline aluminium (Alq3) is used to enhance electrons in the emissive region, thus ITO/V2O5 (8nm)/NPB (52nm)/V2O5 (8nm)/NPB (52nm)/Alq3 (30 and 45nm)/Alq3:Bphen (30wt%, 30 and 45nm)/LiF (1nm)/Al (120nm) devices are fabricated. The thick-film devices show the turn-on voltage of about 3V and the maximal power efficiency of 4.5lm/W, which is 1.46 times higher than the conventional thin-film OLEDs.
  • Article Text

  • [1] Walzer K, Maennig B, Pfeiffer M and Leo K 2007 Chem.Rev. 107 1233
    [2] Zhu X L, Sun J X, Peng H J, Meng Z G, Wong M and Kwoka H S2005 Appl. Phys. Lett. 87 153508-1
    [3] Chen T-H, Liou Y, Wu T J and Chen J Y 2005 Appl.Phys. Lett. 87 243510-1
    [4] Reynolds K J, Barker J A, Greenham N C, Friend R H andFrey G L 2002 J. Appl. Phys. 92 7556
    [5] Hung L S, Tang C W and Mason M G 1997 Appl. Phys.Lett. 70 152
    [6] Huang J S, Li G, Wu E, Xu Q F and Yang Y 2006 Adv.Mater. 18 114
    [7] Huang J S, Pfeiffer M, Werner A, Blochwitz J, Leo K andLiu Y S 2002 Appl. Phys. Lett. 80 139
    [8] Zhou X, Pfeiffer M, Huang J S, Blochwitz-Nimoth J, Qin DS, Werner A and Drechsel J 2002 Appl. Phys. Lett. 81 922
    [9] Matsumoto T, Nakada T, Endo J, Mori K, Kawamura N, Yokoi Aand Kido J 2003 SID 03 DIGEST 27.5L p 979
    [10] Wang F X, Qiao X F, Xiong T and Ma D G 2008 Org.Electron. (in press)
  • Related Articles

    [1]LIANG Shi-Xiong, WU Zhao-Xin, ZHAO Xuan-Ke, HOU Xun. Escaped and Trapped Emission of Organic Light-Emitting Diodes [J]. Chin. Phys. Lett., 2012, 29(2): 024209. doi: 10.1088/0256-307X/29/2/024209
    [2]YANG Gang, ZHANG Di, WANG Jun, JIANG Quan, ZHONG Jian, YUJun-Sheng, ZHU Feng-Zhi, LUO Kai-Jun, XIE Yun, XU Ling-Ling. Nondoped Electrophosphorescent Organic Light-Emitting Diodes Based on Platinum Complexes [J]. Chin. Phys. Lett., 2009, 26(7): 077804. doi: 10.1088/0256-307X/26/7/077804
    [3]YU Shun-Yang, YI Ming-Dong, MA Dong-Ge. Fabrication of an Integrated Pixel with an Organic Light-Emitting Diode Driven by Copper Phthalocyanine Organic Thin Film Transistors [J]. Chin. Phys. Lett., 2008, 25(2): 755-757.
    [4]LI Hong-Jian, ZHU Ru-Hui, LI Xue-Yong, YANG Bing-Chu. An Electroluminescence Delay Time Model of Bilayer Organic Light-Emitting Diodes [J]. Chin. Phys. Lett., 2007, 24(8): 2394-2397.
    [5]WANG Jing, SONG Rui-Li, LIU Chun-Ling, JIANG Wen-Long, CHEN Shu-Fen, ZHAO Yi, HOU Jing-Ying, LIU Shi-Yong. Improved Performances for Organic Light-Emitting Diodes Based on Al2O3-Treated Indium--Tin Oxide Anode [J]. Chin. Phys. Lett., 2006, 23(11): 3094-3096.
    [6]XIE Jing, ZHANG De-Qiang, WANG Li-Duo, DUAN Lian, QIAO Juan, QIU Yong. Improved Performance of Organic Light-Emitting Diodes with MgF2 as the Anode Buffer Layer [J]. Chin. Phys. Lett., 2006, 23(4): 928-931.
    [7]WU Zhao-Xin, WANG Li-Duo, QIU Yong. Optical Interference Effects by Metal Cathode in Organic Light-Emitting Diodes [J]. Chin. Phys. Lett., 2004, 21(7): 1370-1373.
    [8]CHANG Chun, WANG Li-Duo, LI Yang, DUAN Lian, QIU Yong. Flexible Substrates with Polyimide Buffer Layers for Organic Light-Emitting Diodes [J]. Chin. Phys. Lett., 2004, 21(4): 744-746.
    [9]HU Yuan-Chuan, DONG Gui-Fang, WANG Li-Duo, LIANG Yan, QIU Yong. Organic Light-Emitting Diodes Driven by Organic Transistors [J]. Chin. Phys. Lett., 2004, 21(4): 723-725.
    [10]ZHANG Zhi-Ming, ZHANG Rui-Feng, WU Fang, MA Yu-Guang, LI Guo-Wen, TIAN Wen-Jing, SHEN Jia-Cong. Organic Light-Emitting Diodes Based on New Oxadiazole and Pyrazoline Derivatives [J]. Chin. Phys. Lett., 2000, 17(6): 454-456.

Catalog

    Article views (0) PDF downloads (1175) Cited by()

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return