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In this paper, ZnO nanoparticle film is synthesized by using a sol-gel method. Then ITO/ZnO nanoparticles/MEH-PPV/LiF/Al heterostructure devices are fabricated. Next, the emission spectra and electrical properties of the devices are measured for different thickness of the ZnO nanoparticle films. Under DC bias, ultraviolet (UV) electroluminescence (EL) from ZnO band edge emission is observed. When the voltage is higher than 12 V, the UV electroluminescence at 390 nm from ZnO band edge emission can be observed clearly. The EL mechanisms are discussed in terms of carrier tunneling process.
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Keywords:
- ZnO nanoparticles /
- organic inorganic hybrid /
- electroluminescence
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[33] [34] Yang Q, Liu Y, Pan C F, Chen J, Wen X N, Wang Z L 2013 Nano Lett. 13 607
[35] [36] Wang D W, Zhao S L, Xu Z, Kong C, Gong W 2011 Org. Electron. 12 92
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[42] [43] [44] Hung L S, Tang C W, Mason M G 1997 Appl. Phys. Lett. 70 152
[45] Jabbour G E, Kawabe Y, Shaheen S E 1997 Appl. Phys. Lett. 71 1762
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[1] Yang P, Yan H, Mao S, Russo R, Johnson J, Saykally R, Morris N, Pham J, He R, Choi H J 2002 Adv. Funct. Mater. 12 323
[2] [3] [4] Sung J A, Gyu C Y 2007 Appl. Phys. Lett. 91 123109
[5] Zhou H J, Wissinger M, Fallert J, Hauschild R, Stelzl F, Klingshim C, Kalt H 2007 Appl. Phys. Lett. 91 181112
[6] [7] ÖzgürÜ, Alivov Ya I, Liu C, Teke A, Reshchikov M A, Doan S, Avrutin V, Cho S J, Morkoç H 2005 J. Appl. Phys. 98 041301
[8] [9] [10] Gao H X, Hu R, Yang Y T 2012 Chin. Phys. Lett. 29 017305
[11] [12] Das S N, Choi J H, Kar J P, Lee T I, Myoung J M 2010 Mater. Chem. Phys. 121 472
[13] Yuan N Y, Li J H, Fan L M, Wang X Q, Xie J S 2006 Acta Phys. Sin. 55 3581 (in Chinese) [袁宁一, 李金华, 范利宁, 王秀琴, 谢建生 2006 物理学报 55 3581]
[14] [15] [16] Sun J C, Zhao J Z, Liang H W, Bian J M, Hu L Z, Zhang H Q, Liang X P, Liu W F, and Du G T 2007 Appl. Phys. Lett. 90 121128
[17] [18] Goh E S M, Yang H Y, Han Z J, Chen T P, Ostrikov K 2012 Appl. Phys. Lett. 101 263506
[19] Zhang Q B, Guo H H, Feng Z F, Lin L L, Zhou J Z, Lin Z H 2010 Electrochim. Acta. 55 4889
[20] [21] Yang C, Wang X P, Wang L J, Pan X F, Li S K, Jing L W 2013 Chin. Phys. B 22 088101
[22] [23] [24] Guo H H, Zhou Z J, Lin Z H 2008 Electrochem. Commun. 10 146
[25] [26] Zaman S, Zainelabdin A, Amin G, Nur O, Willander M 2012 J. Appl. Phys. 112 064324
[27] [28] Sun X W, Huang J Z, Wang J X, Xu Z 2008 Nano Lett. 8 1219
[29] [30] Tu M L, Su Y K, Wu S S, Guo T F, Wen T C, Huang C Y 2011 Synth. Met. 161 450
[31] [32] Zhao S L, Kan P Z, Xu Z, Kong C, Wang D W, Yan Y, Wang Y S 2010 Org. Electron. 11 789
[33] [34] Yang Q, Liu Y, Pan C F, Chen J, Wen X N, Wang Z L 2013 Nano Lett. 13 607
[35] [36] Wang D W, Zhao S L, Xu Z, Kong C, Gong W 2011 Org. Electron. 12 92
[37] [38] Zhao S L, Wang Y S, Gao S, Yang Y F, Xu Z 2013 Chin. Phys. Lett. 30 037302
[39] [40] Parker I D 1994 J. Appl. Phys. 75 1656
[41] Amorim C A, Cavallari M R, Santos G, Fonseca F J, Andrade A M, Mergulhão S 2012 J. Non-Cryst. Solids. 358 484
[42] [43] [44] Hung L S, Tang C W, Mason M G 1997 Appl. Phys. Lett. 70 152
[45] Jabbour G E, Kawabe Y, Shaheen S E 1997 Appl. Phys. Lett. 71 1762
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