CAJ | 학술논문

采用阴极恒电位沉积法, 在介孔TiO_2薄膜上制备了介孔TiO_2/CdS薄膜光电极, 用XRD, SEM, Raman, SPS和UV-Vis等多种手段对薄膜电极进行了表征. 结果表明, CdS成功沉积到介孔TiO_2的表面和孔道内, 形成了异质结结构. 通过光电流作用谱考察了该复合体薄膜电极的光电性能, 结果表明, 与单纯的介孔TiO_2薄膜相比, 其光电转换效率显著提高, 这是由于CdS具有吸收可见光的特性以及CdS与介孔TiO_2形成异质结从而使得光生载流子更容易分离的结果.
채용음겁항전위침적법, 재개공TiO_2박막상제비료개공TiO_2/CdS박막광전겁, 용XRD, SEM, Raman, SPS화UV-Vis등다충수단대박막전겁진행료표정. 결과표명, CdS성공침적도개공TiO_2적표면화공도내, 형성료이질결결구. 통과광전류작용보고찰료해복합체박막전겁적광전성능, 결과표명, 여단순적개공TiO_2박막상비, 기광전전환효솔현저제고, 저시유우CdS구유흡수가견광적특성이급CdS여개공TiO_2형성이질결종이사득광생재류자경용역분리적결과.
Mesoporous TiO_2/CdS thin film photoelectrode was successfully prepared by electrodeposition CdS nanoparticles on mesoporous TiO_2 thin film. The products were characterized by XRD, SEM, Raman, SPS and UV-Visible spectra. The results revealed that CdS nanoparticles were successfully deposited on the surface and in the hole of mesoporous TiO_2 thin film. The photoelectric property of these films were investigated by photocurrent action spectra. The results show that the composite films exhibited enhance photoelectric conversion efficiency compared with mesoporous TiO_2 thin films. This may be attributed to the character of CdS and the formation of mesoporous TiO_2/CdS heterojunction.