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This paper studies the influence of poly [2-methoxy-5-(2-ethylhexyloxy)-1, 4-phenylenevinylene] (MEH-PPV) on solution-processable functionalized graphene oxide (SPFGO) composite film-based organic light emitting Diode (OLED) and organic photovoltaic (OPV) performance for different SPFGO concentrations. There is a strong quenching of photoluminescence when MEH-PPV is doped with SPFGO, which means there is a strong transfer of electron and energy between MEH-PPV and SPFGO. Doping SPFGO in MEH-PPV can improve the performance of OLED at low concentration, and the performance will be the best when the concentration of SPFGO is 0.2%; however, the performance of OPV remains unchanged. The performance of OPV could be improved by high doping concentration of SPFGO, the performance will be the best when the concentration of SPFGO reaches 15%, and there is a quenching in the electroluminescence (EL) of OLED. As shown in the statistics of the experiment, SPFGO can increase the injectivity of carriers, and when the SPFGO is of low concentration, it can increase the luminous intensity of OLED and reduce the threshold voltage. SPFGO can act as an electron acceptor, and when the concentration of SPFGO is high, the exciton dissociation at MEH-PPV/SPFGO interface can be improved, and the performance of OPV can be also improved. Therefore, the concentration of SPFGO should be the main factor in adjusting the performance of OLED and OPV separately.
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[16] Xu Z H, Wu Y, Hu B 2005 Appl. Phys. Lett. 87 263118
[17] Berson S, Bettignies R de, Bailly S, Guillerez S, Jousselme B 2007 Adv. Funct. Mater. 17 3363
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[19] Hao Z H, Hu Z Y, Zhang J J, Hao Q Y, Zhao Y 2011 Acta Phys. Sin. 60 11716 (in Chinese) [郝志红, 胡子阳, 张建军, 郝秋艳, 赵颖 2011 60 11716]
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[1] Friend R H, Gymer R W, Holmes A B, Burroughes J H, Marks R N, Taliani C 1999 Nature 397 121
[2] Yu H Z, Peng J B, Zhao X M 2008 Acta Phys. Sin. 57 3898 (in Chinese) [於黄忠, 彭俊彪, 周晓明 2008 57 3898]
[3] Madhava Rao M V, Su Y K, Huang T S, Chen Y C 2010 Nano-Micro Lett. 2 242
[4] Ebbesen T W, Lezec H J, Hiura H, Bennett J W, Ghaemi H F, Thio T 1996 Nature (London) 382 54
[5] Liu Z F, Liu Q, Huang Y, Ma Y F, Yin S G, Zhang X Y, Sun W, Chen Y S 2008 Adv. Mater. 20 3924
[6] Halls J J M, Walsh C A, Greenham N C, Marseglia E A, Friend R H, Moratti S C, Holmes A B 1995 Nature (London) 376 498
[7] Bolotina K I, Sikesb K J, Jianga Z, Klimac M, Fudenberg G, Hone J, Kim P, Stormer H L 2008 Solid State Commun. 146 351
[8] Yang Z, Gao R G, Hu N T, Chai J, Cheng Y W, Zhang L Y, Wei H, Eric Siu-Wai Kong, Zhang Y F 2012 Nano. Micro Lett. 4 1
[9] Hong Z R, Huang Z H, Zeng X T 2006 Chem. Phys. Lett. 425 62
[10] Wang X, Zhi L, Mullen K 2008 Nano Lett. 8 323
[11] Hummers W S, Offeman R E 1958 J. Am. Chem. Soc. 80 1339
[12] Novoselov K S, Geim A K, Morozov S V, Jiang D, Katsnelson M I, Grigorieva I V, Dubonos S V, Firsov A A 2005 Nature 438 197
[13] Stankovich S, Dikin D A, Dommett G H B, Kohlhaas K M, Zimney E J, Stach E A, Piner R D, Nguyen S T, Ruoff R S 2006 Nature 442 282
[14] Dini D, Barthel M, Schneider T, Ottmar M, Verma S, Hanack M 2003 Solid State Ionics. 165 289
[15] Kyu W L, Lee S P, Choi H, Kyu H M, Jae W J, Kweon H, Cheol E J 2007 Appl. Phys. Lett. 91 023110
[16] Xu Z H, Wu Y, Hu B 2005 Appl. Phys. Lett. 87 263118
[17] Berson S, Bettignies R de, Bailly S, Guillerez S, Jousselme B 2007 Adv. Funct. Mater. 17 3363
[18] Ibrahim M A, Roth H K, Zhokhavets U, Gobsch G, Sensfuss S 2005 Sol. Energy Mate. Sol. Cells. 85 13
[19] Hao Z H, Hu Z Y, Zhang J J, Hao Q Y, Zhao Y 2011 Acta Phys. Sin. 60 11716 (in Chinese) [郝志红, 胡子阳, 张建军, 郝秋艳, 赵颖 2011 60 11716]
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