碳模板法制备ZnO粉及其光电性能

Preparation of ZnO Powders by Carbon Template Method and Its Photoelectric Performance

以ZnSO_4·7H_2O和C_6H_(12)O_6为原料,采用碳模板水热法制备了ZnO粉。通过变化工艺因素获得了ZnO微球、ZnO纳米颗粒和ZnO纳米片三种不同形貌的ZnO粉,并将不同形貌的ZnO粉作为光阳极组装成染料敏化太阳能电池。主要研究了Zn/C摩尔比和水热温度对ZnO粉形貌和电池性能的影响。采用扫描电子显微镜对ZnO粉进行了表征,采用电化学工作站对电池的电化学性能进行了分析,并测试了电池的I-V曲线和IPCE曲线。结果表明:Zn/C摩尔比2:1,水热温度180℃、水热时间4 h制备的ZnO粉应用于染料敏化太阳能电池,其光电效率为1.91%。

ZnO powders were prepared with metal salts and glucose as raw materials by a hydrothermal method. ZnO microspheres, ZnO nanoparticles and ZnO nanosheets were obtained. The obtained ZnO powders were assembled into dye sensitized solar cells. The effects of zinc/c mole ratio and hydrothermal synthesis temperature on the performances of ZnO powders and cells were studied. SEM and TEM were used to characterize the ZnO microstructure. I-V curves, IPCE spectra and EIS of the cells were given. The cell obtained at the zinc/c mole ratio of 6：1, the hydrothermal synthesis temperature of 180 °C and after the reaction time of 4 h exhibits the photoelectric conversion of 1.91%.