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White LED based on CsPbBr3 nanocrystal phosphors via a facile two-step solution synthesis route.
- Source :
-
Materials Research Bulletin . Aug2018, Vol. 104, p48-52. 5p. - Publication Year :
- 2018
-
Abstract
- All-inorganic CsPbBr 3 perovskite nanocrystals with mean size of ∼300 nm were synthesized via a facile two-step solution synthesis route. High-resolution transmission electron microscopy and X-ray diffraction characterizations confirm the as-prepared CsPbBr 3 nanoparticles are single-crystals with good crystallinity, although a CsPb 2 Br 5 impure phase also exists in the final product. Power-/temperature-dependent and time-resolved photoluminescence measurements reveal the notable and stable excitonic emission feature of these CsPbBr 3 nanocrystals. As a proof-of-concept demonstration, a LED with p-GaN/n-ZnO heterojunction as blue-violet excitation chip and CsPbBr 3 nanocrystals as green phosphors, was fabricated and a white electroluminescence was achieved from this perovskite nanocrystals decorated LED. [ABSTRACT FROM AUTHOR]
- Subjects :
- *NANOCRYSTALS
*PHOSPHORS
*LIGHT emitting diodes
*PEROVSKITE
*PHOTOLUMINESCENCE
Subjects
Details
- Language :
- English
- ISSN :
- 00255408
- Volume :
- 104
- Database :
- Academic Search Index
- Journal :
- Materials Research Bulletin
- Publication Type :
- Academic Journal
- Accession number :
- 129403788
- Full Text :
- https://doi.org/10.1016/j.materresbull.2018.03.055