首先在氟掺杂的氧化锡导电玻璃（FTO）上水热生长一层TiO₂纳米棒阵列薄膜，然后通过旋涂法旋涂ZnO籽晶层后水热法生长ZnO纳米棒得到TiO₂/ZnO纳米棒阵列薄膜。通过XRD、SEM、PL、UV-Vis和电化学工作站等对单层TiO₂纳米棒和TiO₂/ZnO纳米棒的结构、表面形貌、荧光性能、光吸收强度以及光电化学性质进行表征。结果表明，随着水热生长ZnO时间的增长，ZnO纳米棒密度增加；ZnO纳米棒的生长时间不同使其荧光强度不同，TiO₂/ZnO纳米棒的荧光强度与单层TiO₂纳米棒相比有着微小的减弱，没有明显的衍射峰；TiO₂/ZnO纳米棒复合材料比单层TiO₂的光吸收强度高，提高其光学性能，但是吸光区域都在紫外光区域；在标准模拟太阳光照射下，TiO_2/ZnO纳米棒的光电流为0.002 mA，单层TiO₂纳米棒的光电流为0.006 mA，复合薄膜的电流有着明显的变化。

Hydrothermal method is used to prepare single-layer TiO₂ nanorods and TiO₂/ZnO double-layer electron transport materials.Firstly,a layer of TiO₂ nanorod array film is hydrothermally grown on fluorine-doped tin oxide conductive glass (FTO),then ZnO seed layer is spin-coated by spin coating method,and ZnO nanorods are hydrothermally grown to obtain TiO₂/ZnO nanorod array film.The structure,surface morphology,fluorescence properties,light absorption intensity,and photoelectrochemical properties of single-layer TiO₂ nanorods and TiO₂/ZnO nanorods are studied and characterized by X-ray diffraction,scanning electron microscopy,fluorophotometer,UV-Vis spectrophotometer and electrochemical workstation.The results show that the density of ZnO nanorods increases with the prolonging of ZnO hydrothermal growth time.Different growth time leads to different fluorescence intensity of ZnO nanorods.The fluorescence intensity of TiO₂/ZnO nanorods is slightly smaller than that of single-layer TiO₂ nanorods,but there is not an obvious diffraction peak.TiO₂/ZnO nanorod composite exhibits higher light absorption intensity than single-layer TiO₂,representing an improved optical property.However,the absorption region of TiO₂/ZnO nanorod composite locates at ultraviolet region.TiO₂/ZnO nanorods can generate a 0.002 mA of photocurrent under the irradiation of 100 mW/cm in standard simulated sunlight (AM1.5 G)².Single-layer TiO₂ nanorods can generate a 0.006 mA of photocurrent under the same irradiation.

竹笛(1994-),女,硕士研究生,主要从事新能源方向研究,838067358@qq.com