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- Title
Novel double-layered photoanodes based on porous-hollow TiO<sub>2</sub> microspheres and La(OH)<sub>3</sub>:Yb<sup>3+</sup>/Er<sup>3+</sup> for highly efficient dye-sensitized solar cells.
- Authors
Hu, Zhen; Zhao, Li; Guo, Haiyong; Wang, Shimin; Li, Wenlu; Yang, Xiaojie; Dong, Binghai; Wan, Li
- Abstract
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 20.33 mA/cm2 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.
- Subjects
TITANIUM oxides; DYE-sensitized solar cells; PHOTOELECTRONS; FLUORINE; DOPING agents (Chemistry)
- Publication
Journal of Materials Science: Materials in Electronics, 2019, Vol 30, Issue 1, p212
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-018-0283-7