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采用脱氯化氢的方法合成了聚(2-甲氧基-5-十二烷氧基)对苯乙炔(PMODOPV)。利用热蒸发法在铜基片上制备氧化锌纳米线,以此为负极直接旋涂聚合物溶液,制备结构为氧化铟锡(ITO)/聚乙撑二氧噻吩-聚(苯乙烯磺酸盐)(PEDOT∶PSS)/PMODOPV/ZnO/Cu的光伏器件。考察了器件的光伏特性以及纳米线的加入对光伏器件的影响。研究发现,加入ZnO纳米线制备的器件具有高的开路电压和短路电流,在标准AM1.5太阳光模拟灯照射下(1000W/cm^2),器件的短路电流达到了5.37×10^-3A/cm^2,开路电压达到了1.01V,功率转换效率相应地达到了1.37%,其中功率转换效率与没有掺杂氧化锌纳米线的PMODOPV器件相比有明显提高。文中在氧化锌纳米线上旋涂PMODOPV获得活性层,从其膜表面的SEM图中可以看出,氧化锌纳米线类似网状的交织在聚合物的膜层中,纳米线与聚合物实现了微观尺度的结合。

Poly(2-methoxyl-5-dodecoxyl p-phenyl vinylene)(PMODOPV) was prepared by dehydrochlorination process with p-methoxylphenol and p-diphenol as raw materials.The zinc oxide nanowires,which were formed on the Cu substrates,were used directly as negative electrode materials for photovoltaic devices.As the active layer,the dissolved PMOCOPV was spin-coated on the nanowires.The photovoltaic devices were made with the structure of indium tin oxide(ITO)/poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)(PEDOT∶PSS)/PMOCOPV/ZnO/Cu.The solar power conversion efficiency of PMODOPV/ZnO nanowires device is 1.37%,the short-circuit current density(Jsc) and open-circuit voltage(Voc) are 5.37×10^-3 A/cm^2,1.01V respectively.SEM images of ZnO nanowires overlaid of PMODOPV indicate that ZnO nanowires are coated by polymer,and a micrometer-scale combination is achieved.

参考文献

[1] Beek WJE;Wienk MM;Kemerink M;Yang XN;Janssen RAJ .Hybrid zinc oxide conjugated polymer bulk heterojunction solar cells[J].The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical,2005(19):9505-9516.
[2] Baoquan Sun;Eike Marx;NeiL C. Greenham .Photovoltaic Devices Using Blends of Branched CdSe Nanoparticles and Conjugated Polymers[J].Nano letters,2003(7):961-963.
[3] 张小舟,蹇锡高,卢新坤.含有不同烷氧基侧链的聚对苯乙炔(PPV)衍生物的合成与性能表征[J].材料科学与工程学报,2010(04):518-523.
[4] Heo YW;Norton DP;Tien LC;Kwon Y;Kang BS;Ren F;Pearton SJ;LaRoche JR .ZnO nanowire growth and devices[J].Materials Science & Engineering, R. Reports: A Review Journal,2004(1/2):1-47.
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