AI Article Synopsis
- A new multifunctional composite photoanode is created using TiO hollow spheres, Au nanoparticles, and upconversion nanoparticles, which enhances efficiency in dye-sensitized solar cells.
- This innovative design achieves a record power conversion efficiency of 14.13%, showcasing its potential for commercial applications in solar technology.
- The efficiency improvement is attributed to the synergistic effects of light scattering from TiO hollow spheres, near-infrared to visible light conversion by UCNPs, and the surface plasmon resonance of Au nanoparticles, with high stability evidenced by maintaining 95.33% efficiency after 180 hours.
Article Abstract
We report a new strategy to fabricate a multifunctional composite photoanode containing TiO hollow spheres (TiO -HSs), Au nanoparticles (AuNPs) and novel NaYF : Yb,Er@NaLuF : Eu@SiO upconversion nanoparticles (UCNPs). The AuNPs are grown on the photoanode film including TiO -HSs and UCNPs by a simple in situ plasmonic treatment. As a result, an impressive power conversion efficiency of 14.13 % is obtained, which is a record for N719 dye-based dye-sensitized solar cells, demonstrating great potential for the solar cells toward commercialization. This obvious enhancement is ascribed to a collaborative mechanism of the TiO -HSs exhibiting excellent light-scattering ability, of the UCNPs converting near-infrared photons into visible photons and of the AuNPs presenting outstanding surface plasmon resonance effect. Notably, a steady-state experiment further reveals that the champion cell exhibits 95.33 % retainment in efficiency even after 180 h of measurements, showing good device stability.
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| http://dx.doi.org/10.1002/anie.202302753 | DOI Listing |
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