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Facile room-temperature synthesis of highly airāstable and moisture-resistant CsPbX3/SiO2 nanocomposites for tunable white light-emitting diodes.
- Source :
-
Materials Science in Semiconductor Processing . Dec2021, Vol. 136, pN.PAG-N.PAG. 1p. - Publication Year :
- 2021
-
Abstract
- All inorganic perovskite quantum dots (PQDs) and perovskite CsPbX 3 /SiO 2 nanocomposites (PNCs) have shown their potentials for optical and lighting applications. We demonstrate a one-step approach to synthesize PQDs and PNCs more simply and effectively at room temperature in the open air. The resulting PNCs can show a narrow emission in the PL spectra and high stability under ambient conditions. In particular, both green CsPbBr 3 /SiO 2 and red CsPbI 3-x Br x /SiO 2 PNCs can be obtained by employing this easy and low-cost method. Even, the SiO 2 protection can also effectively prevent the halide exchange reaction between green and red PNCs, meaning the capability for white light applications. The resulting white light-emitting diodes (WLEDs) based on the green and red PNCs coated on the blue LED have a white Commission Internationale del' Enclairage (CIE) coordinates of (0.375, 0.362) and a low correlated color temperature (CCT) of 4054 K. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13698001
- Volume :
- 136
- Database :
- Academic Search Index
- Journal :
- Materials Science in Semiconductor Processing
- Publication Type :
- Academic Journal
- Accession number :
- 152794497
- Full Text :
- https://doi.org/10.1016/j.mssp.2021.106158