采用溶胶凝胶法制备ZnO∶Al,Sm阻挡层薄膜,并用X射线衍射仪(XRD)、能谱仪(EDS)、红外光谱(FTIR)、荧光光谱(PL)、紫外可见光谱(UV-Vis)和扫描电子显微镜(SEM)等对阻挡层薄膜进行了表征,探讨了Al、Sm掺杂量对阻挡层薄膜性能的影响.结果表明:当Al的掺杂摩尔分数为1%、Sm的掺杂摩尔分数为3%时,所制备的阻挡层荧光强度最高,可将部分紫外光下转换为588 nm的可见光,拓宽了光谱响应范围;基于ZnO∶1%Al,3%Sm阻挡层的海胆棘壳色素敏化的纳米TiO2太阳能电池的开路电压为0.73 V,短路电流密度为0.68 mA/cm2,转换效率达0.33%,效率比基于ZnO阻挡层的电池提高了约136%.“,”Al and/or Sm doped ZnO block films were prepared by sol-gel method, and characterized by XRD, EDS, FTIR, PL, UV-Vis and SEM to investigate the effects of Al and Sm doping content on the performance.When the doping mole fraction of Al is 1%, and that of Sm is 3%, the photoluminescence intensity of the block film is the highest.The film can down-convert part of ultraviolet light to visible light of 588 nm, which widens the spectra response range.By using ZnO∶Al,Sm down-conversion film and TiO2 (P25) porous absorbing layer, after sensitized by the pigment ethanol solution of spines of sea urchin, the short-circuit current density and open-circuit voltage of the dye sensitized solar cell (DSSC) are 0.68 mA/cm2 and 0.73 V, respectively.And the DSSC achieves the power conversion efficiency of 0.33%, which is increased by 136% compared to the DSSC based on ZnO block layer.