Abstract
Miscible-order fluoride-phosphate blocky phosphor (FBP), composed with ordered-phase of NaYF4 crystals and unordered phase of tin-fluorophosphate glass, is prepared by a two-step process and luminescent properties of FBPs embedded with different particle sizes of NaYF4 crystals are presented. High-frequency fluorescence from higher metastable 5DJ (J = 1, 2 and 3) energy levels are effectively released in Eu3+ doped fluoride crystals. Taking the blue emission of Sn2+ as the framework, multi-peak emissions from metastable energy levels are controlled to adjust the color coordinates of the FBP to the white-light region, which the color rendering index (CRI) reaches 89. Tunable color FBP with high CRI retains splendid luminescence property of fluoride, providing a potential candidate for the development of white LED.
| Original language | English |
|---|---|
| Article number | 435705 |
| Journal | Nanotechnology |
| Volume | 32 |
| Issue number | 43 |
| DOIs | |
| State | Published - 22 Oct 2021 |
| Externally published | Yes |
Keywords
- Fluoride-phosphate blocky phosphor
- Multi-peak emissions
- White-light-emitting
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