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Preparation of highly luminescent BaSO4 protected CdTe quantum dots as conversion materials for excellent color-rendering white LEDs.
- Source :
- Journal of Materials Chemistry C; 2015, Vol. 3 Issue 12, p2831-2836, 6p
- Publication Year :
- 2015
-
Abstract
- The incorporation of colloidal CdTe quantum dots into an inorganic matrix, BaSO<subscript>4</subscript>, through a handy and rapid co-precipitation method is demonstrated for the first time. Owing to the protection of the BaSO<subscript>4</subscript> matrix, the resulting composites show stronger luminescence, longer fluorescent lifetime, and higher photo- and thermal stability as well as being more anti-acid compared to the parental CdTe QDs. Moreover, the composites hold several advantages for industrial applications. White light-emitting diodes (WLEDs) utilizing the composites as a red color conversion layer are fabricated, and produce bright white light with high color-rendering properties including a CIE coordinate of (0.34, 0.33), an R<subscript>a</subscript> of 88, and a T<subscript>c</subscript> of 5112 K at 20 mA, suggesting their great potential application in a solid-state lighting system with high color-rendering properties. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20507526
- Volume :
- 3
- Issue :
- 12
- Database :
- Complementary Index
- Journal :
- Journal of Materials Chemistry C
- Publication Type :
- Academic Journal
- Accession number :
- 101598947
- Full Text :
- https://doi.org/10.1039/c4tc02806f