Abstract
Nd3+-sensitized quenching-shield sandwich-structured upconversion nanoparticles are reported, which exhibit highly efficient upconversion photoluminescence under excitation by an 800 nm continuous-wave laser. The transition-layer structure is essential to bridge energy transfer from the sensitizer to the activator and simultaneously block energy back-transfer from the activator to the sensitizer. These 800 nm-excited upconversion nanoparticles are a key step toward the development of upconversion nanophosphors for biological applications.
Original language | English (US) |
---|---|
Pages (from-to) | 2831-2837 |
Number of pages | 7 |
Journal | Advanced Materials |
Volume | 26 |
Issue number | 18 |
DOIs | |
State | Published - May 14 2014 |
Keywords
- excitation
- quenching effects
- quenching-shield sandwich structures
- transition layers
- upconversion
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering