School of Chemical Engineering and Technology, Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin), Tianjin University, Tianjin 300072, China.
Department of Physics, School of Science, Tianjin University, Tianjin 300072, China.
J Colloid Interface Sci. 2018 Mar 1;513:693-699. doi: 10.1016/j.jcis.2017.11.066. Epub 2017 Nov 22.
In this work, TiO nanorod arrays (TiO-NAs) were modified by CuInS quantum dots (CuInS QDs) on the surface of the nanorods. The resultant TiO-CuInS nanorod arrays (TiO-CuInS-NAs) were characterized by UV/Vis spectroscopy, transmission electronic microscopy (TEM), and X-ray diffraction (XRD). The TiO-CuInS-NAs were applied as scaffold for the preparation of organic-inorganic hybrid perovskite solar cells. In comparison with the solar cell devices based on TIO-NAs, a significant improvement in the power conversion efficiency had been achieved and the highest efficiency was obtained as 11.7% (under 100 mW/cm) through the optimization of the growth time of QDs on nanorods. The improvement of the device performance could be attributed to the assistance of CuInS QDs in the light harvesting as well as the facilitation of the electron injection from the perovskite to the TiO scaffold.
在这项工作中，TiO 纳米棒阵列（TiO-NAs）通过 CuInS 量子点（CuInS QDs）在纳米棒表面进行修饰。通过紫外可见光谱、透射电子显微镜（TEM）和 X 射线衍射（XRD）对所得 TiO-CuInS 纳米棒阵列（TiO-CuInS-NAs）进行了表征。TiO-CuInS-NAs 被用作制备有机-无机杂化钙钛矿太阳能电池的支架。与基于 TiO-NAs 的太阳能电池器件相比，通过优化量子点在纳米棒上的生长时间，实现了功率转换效率的显著提高，最高效率达到 11.7%（在 100mW/cm 下）。器件性能的提高可以归因于 CuInS 量子点在光收集方面的辅助以及促进了从钙钛矿到 TiO 支架的电子注入。
