具有增强的光捕获和电子收集效率的染料敏化太阳能电池新型光阳极。

Novel Photoanode for Dye-Sensitized Solar Cells with Enhanced Light-Harvesting and Electron-Collection Efficiency.

机构信息

Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences; National Center for Nanoscience and Technology (NCNST) , Beijing 100083, China.

Advanced Materials and Technology Institute, University of Science and Technology Beijing , Beijing 100083, China.

出版信息

ACS Appl Mater Interfaces. 2016 Jun 1;8(21):13418-25. doi: 10.1021/acsami.6b02887. Epub 2016 May 18.

DOI:10.1021/acsami.6b02887

PMID:27169327

Abstract

A novel photoanode structure modified by porous flowerlike CeO2 microspheres as a scattering layer with a thin TiO2 film deposited by atomic layer deposition (ALD) is prepared to achieve a significantly enhanced performance of dye-sensitized solar cells (DSSCs). The light scattering capability of the photoanode with the porous CeO2 microsphere layer is considerably improved. The interconnection of particles and electrical contact between bilayer and conducting substrate is further enhanced by an ALD-deposited TiO2 film, which effectively reduces the electron recombination and facilitates electron transport and thus enhances the charge collection efficiency of DSSCs. As a result, the overall efficiency of the obtained TiO2-CeO2-based cells reaches 9.86%, which is 31% higher than that of the DSSCs with a conventional TiO2 photoanode.

摘要

一种新型的光阳极结构，通过多孔花状 CeO2 微球修饰作为散射层，并采用原子层沉积（ALD）沉积一层薄的 TiO2 薄膜，以实现染料敏化太阳能电池（DSSC）性能的显著提高。具有多孔 CeO2 微球层的光阳极的光散射能力得到了极大的提高。ALD 沉积的 TiO2 薄膜进一步增强了双层和导电基底之间的颗粒连接和电接触，有效减少了电子复合，并促进了电子传输，从而提高了 DSSC 的电荷收集效率。结果，所得到的基于 TiO2-CeO2 的电池的整体效率达到 9.86%，比具有传统 TiO2 光阳极的 DSSC 高 31%。