School of Applied Chemical Engineering, Chonnam National University, Gwangju, 500-757, South Korea.
Dalton Trans. 2013 Dec 28;42(48):16961-7. doi: 10.1039/c3dt51287h. Epub 2013 Oct 4.
In the present article, vertically aligned ZnO nanorod arrays were synthesized by an aqueous chemical growth (ACG) route on a fluoride doped tin oxide (FTO) coated glass substrate. These nanorods were further sensitized with cadmium sulfide (CdS) quantum dots (QDs) by a successive ionic layer adsorption and reaction (SILAR) technique. The synthesized CdS coated ZnO nanorods were characterized for their structural and morphological properties with X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS) and field emission scanning electron microscopy (FESEM). Finally, prepared CdS coated 1D ZnO photoelectrodes were tested for their photoelectrochemical performance. Our results show that the sample deposited after 40 SILAR cycles shows 5.61 mA cm(-2) short current density (JSC) with η = 1.61% power conversion efficiency.
本文采用水热合成法在掺氟氧化锡（FTO）玻璃衬底上制备了垂直排列的氧化锌纳米棒阵列，然后通过连续离子层吸附反应（SILAR）技术将硫化镉（CdS）量子点敏化到纳米棒上。用 X 射线衍射（XRD）、高分辨率透射电子显微镜（HRTEM）、X 射线光电子能谱（XPS）和场发射扫描电子显微镜（FESEM）对合成的 CdS 修饰 ZnO 纳米棒的结构和形貌特性进行了表征。最后，对制备的 CdS 修饰一维 ZnO 光电管进行了光电化学性能测试。结果表明，经过 40 次 SILAR 循环沉积的样品具有 5.61 mA cm(-2)的短路电流密度（JSC），光电转换效率为 1.61%。
