Novel double-layered photoanodes based on porous-hollow TiO2 microspheres and La(OH)3:Yb3+/Er3+ for highly efficient dye-sensitized solar cells

作者：Hu, Zhen; Zhao, Li^*; Guo, Haiyong; Wang, Shimin^*; Li, Wenlu; Yang, Xiaojie; Dong, Binghai; Wan, Li

来源：Journal of Materials Science: Materials in Electronics , 2019, 30(1): 212-220.

DOI：10.1007/s10854-018-0283-7

• UP-CONVERSION LUMINESCENCE
• ENHANCED PERFORMANCE
• PHOTOVOLTAIC PERFORMANCE
• OXIDATIVE-DEGRADATION
• PHOTOELECTRODE
• SCATTERING
• SPHERES
• ER3+
• FILM

A novel composite double-layer film was developed using TiO2/La(OH)(3):Yb3+/Er3+ nanoparticles (P25/UC) and porous-hollow TiO2 microspheres (PHTS) for highly efficient dye-sensitized solar cells (DSSCs). P25/UC was used as the first layer and coated onto fluorine-doped tin oxide glass substrate to create a good contact and upconversion effect. The P25/UC layer can absorb and convert infrared light into visible red and green light, increasing light utilization. PHTS has a large size and a high specific surface area, was deposited onto the surface of the P25/UC film to improve the light scattering performance and dye adsorption of solar cells. The P25/UC composite double-layer film (P25/UC+PHTS) achieved the highest short-circuit current density of 20.33mA/cm(2) and photoelectron conversion efficiency of 8.89% due to the synergistic effect of the upconversion layers and light-scattering layers, which increased by 51.26% and 38.04% compared with that of the pure P25 film photoelectrode.

• 出版日期2019-1
• 单位湖北大学