1 research outputs found
Pseudohalogen Ammonium Salt-Assisted Syntheses of Large-Sized Indium Phosphide Quantum Dots with Near-Infrared Photoluminescence
The development of indium phosphide (InP)-based quantum
dots (QDs)
with a near-infrared (NIR) emission area still lags behind the visible
wavelength region and remains problematic. This study describes a
one-step in situ pseudohalogen ammonium salt-assisted
approach to generate NIR-emitted InP-based QDs with high photoluminescence
quantum yields (PLQYs). The coexistence of NH4+ and PF6– ions from NH4PF6 may in situ synchronously etch and passivate
the surface oxides and impede the creation of traps under the whole
growth process of InP QDs. Experimental findings demonstrated that
the in situ pseudohalogen ammonium salt-assisted
syntheses technique may feature emission at a full width at half-maximum
(fwhm) peak as fine as ∼45 nm and broaden the emission range
to around ∼780 nm. A two-step approach for ZnS shells was developed
to further improve the PLQY of NIR-emitted InP QDs. Furthermore, the
constructed high-power intrinsically stretchable NIR color-conversion
film employing the InP-based QDs/polymer composites presented excellent
luminescence conversion ability and stretchability