聚乙烯亚胺对ZnO纳米线阵列膜的形貌和光电性能的影响

Effect of polyethylenimine on morphology and photovoltaic property of ZnO nanowire array films

摘要: 采用X射线衍射仪、投射电镜仪和扫描电镜仪等测试手段,系统地研究了不同聚乙烯亚胺(PEI)浓度对ZnO纳米线阵列膜的形貌、线密度和尺寸的影响及ZnO纳米线阵列膜的光电性能.研究结果表明,在PEI浓度从3.2 mmol·L^-1变化到9.3 mmol·L^-1所制备的所有ZnO纳米线阵列膜中,使用7.3 mmol·L^-1PEI浓度合成的ZnO纳米线阵列膜,制成染料敏化太阳能电池后获得0.66%的最高的光电转换效率.

Abstract: The effect of polyethylenimine(PEI) concentration on the morphology,wire density and size of ZnO nanowire arrays was systematically studied by X-ray diffraction(XRD),transmission electron microscopy(TEM) and scanning electron microscope(SEM).The photovoltaic properties of ZnO nanowire array films were also investigated.It is demonstrated that,for a ZnO nanowire array film obtained from 7.3 mmol·L^-1 PEI,an energy conversion efficiency of about 0.66% was obtained,which is the highest for ZnO nanowire array films prepared with different PEI concentrations from 3.2 mmol·L^-1 to 9.3 mmol·L^-1.