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Warm white light-emitting diodes using organic–inorganic halide perovskite materials coated YAG:Ce3+ phosphors.
- Source :
-
Ceramics International . Mar2018, Vol. 44 Issue 4, p3868-3872. 5p. - Publication Year :
- 2018
-
Abstract
- This work reports warm white light-emitting diodes (WLEDs) using organic–inorganic halide perovskite materials coated YAG:Ce 3+ phosphors by a liquid phase synthesis method. The perovskite MAPbBr 3−x I x -coated YAG:Ce 3+ phosphors have more red light contribution than YAG:Ce 3+ phosphors without the perovskite coating. The chromaticity coordinate of white LED with YAG:Ce 3+ remote phosphor is (x = 0.3134, y = 0.3497) 6359. However, those of MAPbBr 2.5 I 0.5 and MAPbBr 2.0 I 1.0 -coated YAG:Ce 3+ remote phosphor shift to (x = 0.4220, y = 0.3725) 2908 and (x = 0.4067, y = 0.4028) 3525, respectively. The colors of perovskite-coated samples are more red and warm. Therefore, the perovskite-coated YAG:Ce 3+ method is useful for warm WLED. [ABSTRACT FROM AUTHOR]
- Subjects :
- *LIGHT emitting diodes
*PEROVSKITE spectra
*HALIDES
*PHOSPHORS
*YAG lasers
Subjects
Details
- Language :
- English
- ISSN :
- 02728842
- Volume :
- 44
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Ceramics International
- Publication Type :
- Academic Journal
- Accession number :
- 127238344
- Full Text :
- https://doi.org/10.1016/j.ceramint.2017.11.176