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In situ synthesis of high-efficiency CsPbBr3/CsPb2Br5 composite nanocrystals in aqueous solution of microemulsion.
- Source :
- Green Chemistry; 8/21/2020, Vol. 22 Issue 16, p5257-5261, 5p
- Publication Year :
- 2020
-
Abstract
- Here, we present the microemulsion method using sodium dodecylbenzenesulfonate and hydrofluoric acid for the in situ synthesis of brightly luminescent CsPbBr<subscript>3</subscript>/CsPb<subscript>2</subscript>Br<subscript>5</subscript> composite nanocrystals (NCs) in aqueous solution. The obtained CsPbBr<subscript>3</subscript>/CsPb<subscript>2</subscript>Br<subscript>5</subscript> composite NCs exhibit a photoluminescence quantum yield of 77.0% and a full width at half maximum of 16.0 nm. And solid-state back-lighting devices were fabricated by combining CsPbBr<subscript>3</subscript>/CsPb<subscript>2</subscript>Br<subscript>5</subscript> composite NCs and red-emitting K<subscript>2</subscript>SiF<subscript>6</subscript>:Mn<superscript>4+</superscript> phosphors with blue light. The as-fabricated device exhibits a wide color gamut of about 95.8% of the Rec. 2020. This work provides a green, low-cost, and in situ water-phase route to synthesize high-quality cesium lead halide NCs for their practical applications in solid-state back-lighting devices. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14639262
- Volume :
- 22
- Issue :
- 16
- Database :
- Complementary Index
- Journal :
- Green Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 145173758
- Full Text :
- https://doi.org/10.1039/d0gc02059a