Publications
Detailed Information
Structurally engineered colloidal quantum dot phosphor using TiO2 photonic crystal backbone
Cited 6 time in
Web of Science
Cited 5 time in Scopus
- Authors
- Issue Date
- 2022-12
- Publisher
- Nature Publishing Group
- Citation
- Light: Science and Applications, Vol.11 No.1, p. 318
- Abstract
- Photonic crystal (PhC) phosphor, in which the phosphor material is periodically modulated for an enhancement in color-conversion efficiency via resonant absorption of excitation photons, is a paradigm-shifting structural phosphor platform. Two-dimensional (2D) square-lattice PhC phosphor is currently considered the most advanced platform because of not only its high efficiency, but also its immunity to excitation polarization. In the present study, two major modifications are made to further improve the performance of the 2D PhC phosphor: increasing the refractive index contrast and planarizing the surface. The index contrast is improved by replacing the PhC backbone material with TiO2 whereas the surface planarization is achieved by removing excessive colloidal quantum dots from the surface. In comparison with the reference phosphor, the upgraded PhC phosphor exhibits similar to 59 times enhanced absorption (in simulations) and similar to 7 times enhanced emission (in experiments), both of which are unprecedentedly high. Our results not only brighten the viability and applicability of the PhC phosphor but also spur the phosphor development through structural engineering of phosphor materials.
- ISSN
- 2095-5545
- Files in This Item:
- There are no files associated with this item.
Item View & Download Count
Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.