以SmCl3·6H2O和Na2S2O3·5H2O为原料,采用电沉积法在单晶硅(100)和玻璃基板制备了SmS光学薄膜.采用XRD、AFM和紫外可见光分光光度计对薄膜进行了表征.研究了[Sm3+]/[S2O32-]、溶液的pH值对于薄膜的物相的影响.结果表明:在[Sm3+]/[S2O32-]=1:2,控制溶液pH值为4.50以及沉积1h的条件下,可制备出70nm厚单一晶相且表面比较平整的SmS薄膜,薄膜具有(331)方向的取向性.紫外光谱测试表明所制备的SmS薄膜具有290～300nm的紫外吸收特性,薄膜的禁带宽度约为3.6eV.
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