Ba3Y2B6O15:Ce3+—A High Symmetry, Narrow-Emitting Blue Phosphor for Wide-Gamut White Lighting
| Autor: | Shruti Hariyani, Jakoah Brgoch, Anna C. Duke |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Photoluminescence business.industry General Chemical Engineering chemistry.chemical_element Quantum yield Phosphor 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Chip 01 natural sciences 0104 chemical sciences Gamut chemistry Materials Chemistry Optoelectronics 0210 nano-technology business Boron Excitation Visible spectrum |
| Zdroj: | Chemistry of Materials. 30:2668-2675 |
| ISSN: | 1520-5002 0897-4756 |
| DOI: | 10.1021/acs.chemmater.8b00111 |
| Popis: | The production of white light based on a near-UV LED chip requires incorporating three inorganic phosphors that emit in the blue, green, and red portions of the visible spectrum. Using a near-UV LED has the advantage of generating a light with excellent color quality, but due to the large Stokes’ shift between the LED excitation and the multiple phosphor emissions, these devices can suffer from a low overall efficiency. To minimize this inherent energy loss, the three phosphors employed to convert the LED emission must be very efficient, as measured by the internal photoluminescent quantum yield (Φ). In this work, we report the synthesis of a cubic borate, Ba3Y2B6O15, which when substituted with Ce3+ becomes an efficient blue phosphor. This compound can be prepared using a multistep high temperature solid state synthesis with the ensuing photoluminescent measurements revealing a broad excitation band (300–415 nm) making this phosphor compatible with a 365 or 400 nm LED chip. Ba3Y2B6O15:Ce3+ luminesces bri... |
| Databáze: | OpenAIRE |
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