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Effects of Gd3+ modifications on the photoelectrochemical properties of TiO2-based dye-sensitized solar cells
- Source :
- Journal of Nanoparticle Research. 19
- Publication Year :
- 2017
- Publisher :
- Springer Science and Business Media LLC, 2017.
-
Abstract
- In this paper, TiO2 particles (~30 nm) modified with Gd2O3-coating layer (~2 nm) for dye-sensitized solar cells (DSSCs) were fabricated via the hydrothermal method. Among the solar cells based on the Gd3+-doped TiO2 photoanodes, the optimal conversion efficiency was obtained from the 0.025Gd3+-modified TiO2-based cell, with a 17.7% improvement in the efficiency as compared to the unmodified one (7.18%). This enhancement was probably due to the improved UV radiation harvesting via a down-conversion luminescence process by Gd3+ ions, enhancement of visible light absorption and improved dye loading capacity. In addition, after Gd modification, a thin coating could be formed on the TiO2 nanoparticles, which worked as an energy barrier and resulted in a lower charge recombination.
- Subjects :
- Materials science
Bioengineering
02 engineering and technology
engineering.material
010402 general chemistry
01 natural sciences
Hydrothermal circulation
Ion
Coating
General Materials Science
Absorption (electromagnetic radiation)
business.industry
Energy conversion efficiency
General Chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
Atomic and Molecular Physics, and Optics
0104 chemical sciences
Dye-sensitized solar cell
Chemical engineering
Modeling and Simulation
engineering
Optoelectronics
0210 nano-technology
Luminescence
business
Visible spectrum
Subjects
Details
- ISSN :
- 1572896X and 13880764
- Volume :
- 19
- Database :
- OpenAIRE
- Journal :
- Journal of Nanoparticle Research
- Accession number :
- edsair.doi...........8cfacea8b6f31925713bd6dae53375d6