PbS/CdS纳米晶共敏化ZnO纳米线太阳能电池的性能研究

Properties of PbS/CdS Nanocrystalline Co-sensitized ZnO Nanowires Solar Cells

以Zn(Ac)2·2H2O为原料在强碱性条件下合成一维结构的ZnO纳米线,SEM结果表明合成的纳米线尺寸、形貌、长径比均一;并以油胺为单一溶剂采用热注射法制备了形貌、尺寸均匀的PbS纳米晶;构建PbS纳米晶敏化ZnO纳米线基太阳能电池,同时为了改善电池的光电转换效率并构建了PbS/CdS纳米晶共敏化电池,并测试了电池的光电流密度-光电压(J-V)曲线以及Nyquist曲线图,结果表明PbS/CdS纳米晶共敏化电池性能明显优于单纯的PbS纳米晶敏化ZnO纳米线太阳能电池。

One-dimensional ZnO nanowires were synthesized from Zn（Ac） 2 ＂ 2H20 as precursor in strong alkaline condition. SEM results showed that the size, shape and aspect ratio of synthesized nanowires are uniformed; PbS nanocrystallines were prepared by hot injection morphology, using oleylamine as the single solvent. Then PbS nanocrystallines sensitized ZnO nanowire solar cells were assembled; PbS/CdS co-sensitized ZnO solar cells were built to improve the photoelectric conversion efficiency. Photocurrent density-photovohage （J-V） curves and the Nyquist dots were tested. The results showed that the performance of PbS/CdS nanocrystallines co-sensitized ZnO nanowires solar cells are better than that of the pure PbS nanocrystallines sensitized ZnO nanowire solar ceils.