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Ultrastrong Absorption Meets Ultraweak Absorption: Unraveling the Energy-Dissipative Routes for Dye-Sensitized Upconversion Luminescence
- Source :
- Journal of Physical Chemistry Letters, 9(16), 4625-4631. American Chemical Society
- Publication Year :
- 2018
- Publisher :
- American Chemical Society, 2018.
-
Abstract
- Dye sensitization is becoming a new dimension to highly improve the upconversion luminescence (UCL) of lanthanide-doped upconversion nanoparticles (UCNPs). However, there is still a lack of general understanding of the dye–UCNPs interactions, especially the confused large mismatch between the inputs and outputs. By taking dye-sensitized NaYF4:Yb/Er@NaYF4:Nd UCNPs as a model system, we not only revealed the in-depth energy-dissipative process for dye-sensitized UCL but also confirmed the first ever experimental observation of the energy back transfer (EBT) in the dye-sensitized UCL. Furthermore, this energy-dissipative EBT restricted the optimal ratio of dyes to UCNP. By unearthing all of the energy loss behind the EBT, energy transfer, and energy migration processes, this paper sheds light on the further design of effective dye-sensitized nanosystems for UCL or even downconversion luminescence.
- Subjects :
- Energy loss
Materials science
business.industry
Energy transfer
Upconversion luminescence
Model system
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
7. Clean energy
01 natural sciences
0104 chemical sciences
Dissipative system
Optoelectronics
General Materials Science
Physical and Theoretical Chemistry
0210 nano-technology
business
Luminescence
Absorption (electromagnetic radiation)
Energy (signal processing)
Subjects
Details
- Language :
- English
- ISSN :
- 19487185
- Volume :
- 9
- Issue :
- 16
- Database :
- OpenAIRE
- Journal :
- The Journal of Physical Chemistry Letters
- Accession number :
- edsair.doi.dedup.....151f297dfa1e837f5809eb5cdc543ded