Learning from natural mineral structures is an efficient way to develop potential host lattices for applications in phosphor converted (pc)LEDs. A narrow-band blue-emitting silicate phosphor, RbNa (Li SiO ) :Eu (RNLSO:Eu ), was derived from the UCr C -type mineral model. The broad excitation spectrum (320-440 nm) indicates this phosphor can be well matched with the near ultraviolet (n-UV) LED chip. Owing to the UCr C -type highly condensed and rigid framework, RNLSO:Eu exhibits an extremely small Stokes shift and an unprecedented ultra-narrow (full-width at half-maximum, FWHM=22.4 nm) blue emission band (λ =471 nm) as well as excellent thermal stability (96 %@150 °C of the initial integrated intensity at 25 °C). The color gamut of the as-fabricated (pc)LEDs is 75 % NTSC for the application in liquid crystal displays from the prototype design of an n-UV LED chip and the narrow-band RNLSO:Eu (blue), β-SiAlON:Eu (green), and K SiF :Mn (red) components as RGB emitters.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/anie.201807087 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Learning from a Mineral Structure toward an Ultra-Narrow-Band Blue-Emitting Silicate Phosphor RbNa (Li SiO ) :Eu.
Angew Chem Int Ed Engl
September 2018
The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China.
Learning from natural mineral structures is an efficient way to develop potential host lattices for applications in phosphor converted (pc)LEDs. A narrow-band blue-emitting silicate phosphor, RbNa (Li SiO ) :Eu (RNLSO:Eu ), was derived from the UCr C -type mineral model. The broad excitation spectrum (320-440 nm) indicates this phosphor can be well matched with the near ultraviolet (n-UV) LED chip.
View Article and Find Full Text PDFOptimizing Blue Persistent Luminescence in (SrBa)MgSiOEu,Dy via Solid Solution for Use in Point-of-Care Diagnostics.
ACS Appl Mater Interfaces
October 2016
Department of Chemistry, University of Houston, Houston, Texas 77204-5003, United States.
Inorganic persistent luminescent phosphors are an excellent class of optical reporters for enabling sensitive point-of-care diagnostics, particularly with smartphone-based biosensing devices in testing formats such as the lateral flow assay (LFA). Here, the development of persistent phosphors for this application is focused on the solid solution (SrBa)MgSiO:Eu,Dy (δ = 0, 0.125, 0.
View Article and Find Full Text PDFA New Blue-Emitting Mg2Al4Si5O18:Ce3+ Phosphor for White Light Emitting Diodes.
J Nanosci Nanotechnol
April 2016
A series of blue-emitting Mg2Al4Si5O18:Ce3+ phosphors were prepared via the conventional high temperature solid-state reaction method. The phase structure, photoluminescence (PL) properties, PL thermal stability, and fluorescence decay curves of the samples were investigated for the first time. Under excitation at 365 nm, the phosphor exhibited a broad band blue emission with peak at 440 nm, which was ascribed to the 4f --> 5d transition of Ce3+, and the color coordinate was (0.
View Article and Find Full Text PDFA blue-emitting Sc silicate phosphor for ultraviolet excited light-emitting diodes.
Phys Chem Chem Phys
November 2015
Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China.
A blue-emitting phosphor BaSc2Si3O10:Eu(2+) was synthesized using the conventional solid-state reaction. The crystallographic occupancy of Eu(2+) in the BaSc2Si3O10 matrix was studied based on the Rietveld refinement results and the photoluminescence properties. BaSc2Si3O10 exhibits blue emission ascribed to (3)T2-(1)A1 and (3)T1-(1)A1 charge transfer of SiO4(4-) excited by 360 nm.
View Article and Find Full Text PDFThe energy transfer and effect of doped Mg2+ in Ca3Sc2Si3O12:Ce3+, Pr3+ phosphor for white LEDs.
Dalton Trans
March 2014
Key Laboratory of Luminescence and Application, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, China.
The energy transfer and luminescence properties in the Ce(3+) and Pr(3+) co-activated Ca3Sc2Si3O12 (CSS) silicate garnet are studied in our work. The addition of Pr(3+) exhibits a red emission around 610 nm in the green phosphor CSS:Ce(3+), but the amount of Pr(3+) incorporated into the phosphor is very limited due to the charge mismatch when Pr(3+) substitutes for Ca(2+) in CSS. In order to promote Pr(3+) incorporation into CSS lattices to enhance the red emission component, the addition of Mg(2+) incorporated into Sc(3+) site is performed to compensate the residual positive charge caused by the substitution of Pr(3+) for Ca(2+) in CSS.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!