ZnO纳米团簇与CdSe纳米棒复合膜的光电化学性能研究

摘要

用水热法合成了粒径均匀、分散良好的花状ZnO纳米团簇和CdSe纳米棒.讨论了ITO/ZnO/CdSe复合膜电极光电性能的影响因素,对比研究了ITO/ZnO纳米团簇及ITO/CdSe纳米棒膜电极的光电化学性能,实验表明:复合膜电极拓展了在长波方向的光吸收,提高了光电转换效率;当ZnO与CdSe复合摩尔比为1∶3时,ITO/ZnO/CdSe纳米复合膜电极在本实验中得到最高光电转换效率(IPCE)25.27%,远远高于单一ITO/ZnO花状纳米团簇膜电极和ITO/CdSe纳米棒膜电极.%ZnO nanocomplex and CdSe nanorods were prepared with hydrothermal method and characterized by the XRD, SEM techniques. The photoelectrochemical properties of the ZnO nanocomplex and ZnO nanocom-plex/CdSe nanorods composite film electrodes were investigated. The mechanism of photoelectric conversion for the composite film electrode was discussed. The photoelectrochemical results showed that the maximum value of incident photon to current conversion of efficiency (IPCE) of ZnO/CdSe composite film electrode reached 25.27% at 0.6V, when the molar ratio between ZnO nanocomplex and CdSe nanorods was 1 : 3.