不同醋酸锌浓度下的ZnO薄膜的结构和性能

利用溶胶-凝胶浸渍提拉法在导电玻璃(ITO)基板上制备了氧化锌(ZnO)薄膜。利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、电化学阻抗谱(EIS)等对ZnO薄膜的结构、形貌、以及光电性能进行了分析。结果表明,随着醋酸锌浓度的增加,薄膜由短柱状最终转化为无规则定位生长的聚集球形颗粒结构。随着醋酸锌浓度的升高,薄膜的结晶强度不断增加,薄膜的光电转化效率进一步增加。当醋酸锌浓度为0.9mol/L时,薄膜的光电转化效率为4.5%。

THE STRUCTURE AND PROPERTIES OF ZnO FILMS PREPARED AT VARIOUS ZINC ACETATE CONCENTRATION

zinc oxide(ZnO) films were prepared by the sol-dipping coating method in conductive glass(ITO) substrates.The effect of the zinc acetate concentration on the structure,morphology,electrical properties of the films were investigated by X-ray diffraction(XRD),field emission scanning electron microscope(SEM),Electrochemical impedance spectra(EIS).The results showed that the films transformed stout prismatic into aggregated spherical particle by irregular oriented growth.With increasing deposition temperature,the crystallinity improved,the proportion of zinc acetate concentration increased and Incident photon-to-current conversion efficiency(IPCE) decreased.When zinc acetate concentration is 0.9mol/L,solar-to-electricity conversion efficiency(□) is 4.5%.