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基于碳纳米管的良好导电性、激子传输性能和量子点聚合物复合材料高的光电转换性能, 采用原位缩合法制备了聚合物聚(2-甲氧基-5-辛氧基)-对苯乙炔(MOPPV)功能化碳纳米管(SWNT)-PbSe量子点复合材料, 通过对复合材料的X射线衍射、透射电子显微镜和紫外可见吸收光谱研究, 发现MOPPV, SWNT与PbSe量子点可以有效地复合, 且SWNT与MOPPV形成网状结构; PbSe量子点尺寸为5.75 nm, 其可均匀地分散在MOPPV-SWNT基体中形成包覆或镶嵌结构, 并发生了光诱导电荷转移.通过对复合材料的光电性能研究发现, 当MOPPV, SWNT, PbSe三者的质量比为1: 0.3 : 1 时其光电性能最好, 开路电压为0.556 V, 短路电流为2.133 mA, 填充因子为34.48%, 转换效率为0.452%, 与聚合物MOPPV-PbSe量子点复合材料材料相比, 光电性能提高了2–3倍.According to single-walled carbon nanotube good conductivity, baryon transmission performance, and high photoelectric conversion performance of quantum dot composite material, in this letter, we use in situ condensation method to prepare polymer/poly (2-methoxy, 5-oc-toxy)-1, 4-phenylenevinylene (MOPPV)-single walled carbon nanotubes/PbSe quantum dot composites and use X-ray diffraction, transmission electron microscope, UV-vis absorption spectroscopy to study their characteristics. The results indicate that MOPPV, SWNT and PbSe quantum dots can be effectively combined, especially the SWNT and MOPPV form a network structure in MOPPV matrix, and PbSe quantum dots, each with an average size of 5.75 nm, can be dispersed to form a coating or mosaic structure in the polymer substrate of MOPPV-SWNT, producing the light induced charge transfer phenomenon. The study of composite photoelectric performance shows that when the polymer MOPPV, SWNT, PbSe have their mass ratio of 1: 0.3: 1, the composite photoelectric performance is best: open circuit voltage is 0.556 V, short circuit current is 2.133 mA, fill factor is 34.48%, conversion efficiency is 0.452%. Compared with the polymer MOPPV-PbSe quantum dots composite materials, the optoelectronic properties are increased by 2-3 times.
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Keywords:
- quantum dot /
- carbon nanotubes /
- composite materials /
- power conversion effiency
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[1] Declerck P, Houbertz R, Jakopic G 2008 Mater. Res. Soc. Symposium Proc. 1007 15
[2] Ren J, Zheng J B, Zhao J L 2007 Acta Phys. Sin. 56 2868 (in Chinese) [任驹, 郑建邦, 赵建林 2007 56 2868]
[3] Jiang B Y, Zheng J B, Wang C F, Hao J, Cao C D 2012 Acta Phys. Sin. 61 138801 (in Chinese) [姜冰一, 郑建邦, 王春锋, 郝娟, 曹崇德 2012 61 138801]
[4] Peng Y C, Fu G S 2009 Chin. J. Mater. Res. 23 449
[5] Zhao Y, Xiong S Z, Zhang X D 2010 Acta Phys. Sin. 39 314 (in Chinese) [赵颖, 熊绍珍, 张晓丹 2010 39 314]
[6] Kymakis E, Amaratunga G A J 2002 Appl. Phys. Lett. 80 112
[7] Pradhan B, Batabyal S K, Pal A J 2006 Appl. Phys. Lett. 88 093106
[8] Yun D Q, Feng W, Wu H C, Li B M, Liu X Z, Yi W H, Qiang J F, Gao S, Yan S L 2008 Synthetic Met. 158 977
[9] Feng Y Y, Yun D Q, Zhang X Q, Feng W 2010 Appl. Phys. Lett. 96 093301
[10] Vigolo B, Mamane V, Valsaque F, Le T N H, Thabit J, Ghanbaja J, Aranda L, Fort Y, McRae E 2009 Carbon 47 411
[11] Lamela H, Ehsan D, Frédéric G, Mohan B K, Jean L C 2011 Proc. SPIE 81010G 7
[12] Kang P, Liu R B, Wang S, Zhang Q M 2011 Mater. Rev. 135 1019
[13] Trukhanov V A, Bruevich V V, Yu D P 2011 Phys. Rev. B 84 205318
[14] Du Z, Zhang N, Wang J H 2008 Chem. J. Chin. Univ. 29 902 [杜卓, 张娜, 王建华 2008 高等学校化学学报 29 902]
[15] Chen W B, Yang W F, Zou H J, Tang J X, Deng L F, Li P T 2011 Acta Phys. Sin. 60 117107 (in Chinese) [陈卫兵, 杨伟丰, 邹豪杰, 汤建新, 邓林锋, 黎沛涛 2011 60 117107]
[16] Hou C Q, Zheng J B, Yang M Y 2008 Acta Photo. Sin. 37 224
[17] Huang H Z 2003 Nanmaterial Analysis (1st Ed.) (Beijing: Chemical Industry Press) p243
[18] Hao Z H, Hu Z Y, Zhang J J, Hao Q Y, Zhao Y 2011 Acta Phys. Sin. 60 117106 (in Chinese) [郝志红, 胡子阳, 张建军, 郝秋艳, 赵颖 2011 60 117106]
[19] Liu R X, Zhang L N, Li X Y 2012 Sci. China 42 810 [刘任晓, 张丽娜, 李学毅 2012 中国科学 42 810]
[20] Feng W, Gao Z K 2008 Acta Phys. Sin. 57 2567 (in Chinese) [封伟, 高中扩 2008 57 2567]
[21] Christoph J B, Sean E S, Christoph W N S S 2001 Appl. Phys. Lett. 80 1288
[22] Liu Z, Zhao Z F, Guo H M, Wang Y Q 2012 Acta Phys. Sin. 61 217303 (in Chinese) [刘柱, 赵志飞, 郭浩民, 王玉琦 2012 60 217303]
[23] Einosuke K, Seiki K, Akira O, Shinji A, Shinya M 2008 Appl. Phys. Lett. 92 173307
[24] Voicu P, Gabriel B, Mark C H, Andrew G N, Alex Z 2008 Phys. Rev. B 78 205321
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