Rapid and convenient crystallization of quantum dot CsPbBr3 inside a phosphate glass matrix

In Situ Growth of High-Quality CsPbBr3 Quantum Dots with Unusual Morphology inside a Transparent Glass with a Heterogeneous Crystallization Environment for Wide Gamut Displays

“…Such a symmetrical emission band is also a critical factor that allows for getting a wide color gamut to improve existing display technologies. The emission peaks of colloidal CsPbBr 3 QDs and CsPbBr 3 QDs@glass samples reported in most works of literature are located at 515 nm with an FWHM of 22 nm, ,− while the peak emission of CsPbBr 3 QDs@glass obtained in this work is located at 526 nm; such an obvious red-shift in peak emission is mainly induced by the large size of the CsPbBr 3 QDs stemming from the quantum confinement effect. Both UV–vis absorption and PLE spectra indicate that the CsPbBr 3 QDs@glass sample can be effectively excited by the blue LED chips (Figure b).…”

“…To further probe the microstructure of the CsPbBr 3 QDs@glass, high-resolution TEM (HR-TEM) characterization accompanied by FFT analysis was performed and is shown in Figure . Generally, the morphology of CsPbBr 3 QDs precipitated inside glasses shows a near-spherical shape, which is obviously different from the cubic morphology of conventional colloidal CsPbBr 3 QDs synthesized through the wet-chemical method reported in the previous literature. ,− A possible reason is the confinement role of inorganic oxide glass in the in situ crystallized/grown CsPbBr 3 QDs. As mentioned above, if the interstices of the glass framework are large enough, the cuboid shape morphology and large size of CsPbBr 3 QDs could also be freely grown up in the glass.…”

Facile Preparation of CsPbBr3 Nanocrystals/Ethylene Vinyl Acetate Copolymer Composite Films with Long Term Stability and Flexibility for X‐ray Imaging

“…The corresponding characterization of the CsPbBr 3 NCs is carried out as shown in Figure 1. From the Xray diffraction(XRD)pattern in Figure 1a, the main peaks are observed at 2θ = 15.2, 21.6, 30.7, 37.8, and 43.9°, indicating the lattice planes of (100), ( 110), ( 200), (211), and (220), which correspond to ICSD 97852, [29,30] all peaks demonstrate that the as-grown CsPbBr 3 NCs are cubic, which is consistent with the TEM image. The PL emission spectra of the bare CsPbBr 3 NCs was then characterized under ultraviolet (UV) lamp with wave length of 365 nm, as shown in Figure 1b, the center of the PL spectra located at about 527 nm with the full width at half maxima (FWHM) of 21 nm, the maximum of absorption peak appears at 460 nm, which matches well with the previously literatures, [31][32][33] and indicate a band-edge emission mechanism which result in a short average transient PL decay time (τ avg ) of 14.19 ns for the CsPbBr 3 , see in Figure S3.…”

Zinc Borosilicate Glass-Stabilized CsPbX3 (X = Cl, Br, I) Perovskite Quantum Dots for Photoluminescence Lighting and Display Applications

“…Nevertheless, it is still unable to meet the application of LED devices in a complex environment. Kaewkhao et al fabricated CsPbBr 3 QDs glass with high stability via the modified glass melting and quenching technique . Huang et al proposed a strategy in which the high quantum efficiency of CsPbX 3 QDs was obtained because fluoride was introduced in halogenated borosilicate glass to destroy the tight glass network .…”

“…Kaewkhao et al fabricated CsPbBr 3 QDs glass with high stability via the modified glass melting and quenching technique. 38 Huang et al proposed a strategy in which the high quantum efficiency of CsPbX 3 QDs was obtained because fluoride was introduced in halogenated borosilicate glass to destroy the tight glass network. 39 The white-light-emitting diode (W-LED) device was assembled with a colorful CsPbX 3 QDs glass, exhibiting excellent luminous performance.…”