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Broad luminescence tuning in Mn2+-doped Rb2Zn3(P2O7)2via doping level control based on multiple synergies.
- Source :
- CrystEngComm; 8/21/2022, Vol. 24 Issue 31, p5622-5629, 8p
- Publication Year :
- 2022
-
Abstract
- Here we constructed a series of novel non-centrosymmetric structure phosphors [Rb<subscript>2</subscript>Zn<subscript>3</subscript>(P<subscript>2</subscript>O<subscript>7</subscript>)<subscript>2</subscript>:Mn<superscript>2+</superscript>] by a high-temperature solid-state reaction. The multiband emission can be designed by Mn<superscript>2+</superscript> preferentially occupying three types of crystallographic sites in Rb<subscript>2</subscript>Zn<subscript>3</subscript>(P<subscript>2</subscript>O<subscript>7</subscript>)<subscript>2</subscript>:Mn<superscript>2+</superscript>. The emission color could be continuously tuned from yellow-green to orange-red via multiple synergies among crystallographic site engineering, energy transfer, and Mn–Mn dimmers alone through the dopant concentration. These color-tunable phosphors have good thermal stability (I<subscript>150 °C</subscript>/I<subscript>25 °C</subscript> = 91%). The as-prepared pc-WLED has a low corresponding color temperature (CCT = 4820 K) and a high color rendering index (Ra = 90.4) with CIE color coordinates of (0.351, 0.358). These results show that emission-tunable Rb<subscript>2</subscript>Zn<subscript>3</subscript>(P<subscript>2</subscript>O<subscript>7</subscript>)<subscript>2</subscript>:xMn<superscript>2+</superscript> phosphors are potential candidates for application in n-UV-based pc-WLED devices. This study offers a new insight for wide-range tuning of PL properties by using crystallographic site engineering through changing the doping level in Mn-activated phosphors. [ABSTRACT FROM AUTHOR]
- Subjects :
- LUMINESCENCE
RUBIDIUM
COLOR temperature
ENERGY transfer
PHOSPHORS
THERMAL stability
Subjects
Details
- Language :
- English
- ISSN :
- 14668033
- Volume :
- 24
- Issue :
- 31
- Database :
- Complementary Index
- Journal :
- CrystEngComm
- Publication Type :
- Academic Journal
- Accession number :
- 158570807
- Full Text :
- https://doi.org/10.1039/d2ce00719c