Modification of CdX (X=S, Se) on TiO2 Nanotubular Array Film and Its Photoelectric Performance in Photogenerated Cathodic Protection and Sensitized Solar Cells
二氧化钛(TiO2)是一种重要的无机半导体功能材料，已被广泛应用于太阳能转换等领域。但由于TiO2禁带宽度较宽(3.2eV)，仅能被能量较高的紫外光激发，且光生电子-空穴对快速复合，导致其对太阳光的利用效率较低。通过在TiO2表面复合窄禁带半导体材料，利用半导体能级的交叠，可有效地扩展光响应范围，同时抑制光生电子-空穴对的复合，提高量子产率。 本论文首先在钛金属表面制备高度有序的TiO2纳米管阵列，并以此为基底沉积窄禁带的半导体材料(CdS、CdSe)，制备CdX(X=S，Se)@TiO2复合光阳极。利用扫描电子显微镜、透射电子显微镜、X-射线电子能谱、紫外-可见-近红外分光光度计等对制得的...Titanium dioxide (TiO2) has been proved to be one of the most important semiconductors in various attractive applications based on solar light conversion. However, the fast recombination rate of photogenerated electron-hole pairs in the pure TiO2 and the wide bandgap (3.2 eV) severely hinder its industrial applications. Surface modification of TiO2 with narrow bandgap semiconductors is a promising...学位：理学硕士院系专业：化学化工学院化学系_物理化学(含化学物理)学号：2052008115171
