Modulating the local structure of glass to promote in situ precipitation of perovskite CsPbBr₃ quantum dots by introducing a network modifier

Abstract

All-inorganic CsPbBr3 perovskite quantum dots (QDs) with high quantum efficiency (QE) and exceptional color purity show great potential in the field of wide-color-gamut backlit displays. However, their fragile stability is...

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

“…Based on our previous studies, − the less rigid glass network and relatively large interstitial spaces are critical to obtaining the bigger size of CsPbBr 3 QD particles in glass. In addition, a high boron-containing glass system is considered one of the most suitable precursor glass for favoring the formation of CsPbBr 3 QDs due to its microheterogeneity in a certain composition range.…”

Exploring CsPbX3 (X = Cl, Br, I) Perovskite Nanocrystals in Amorphous Oxide Glasses: Innovations in Fabrication and Applications

“…[129] CaF 2 Promoting the NCs' precipitation and growth. [130] types of NCs can be precipitated in the ion-exchanged layer. Noble metal ions introduced into glasses through ion exchange are promising choices to control the spatial precipitation of semiconductor NCs in the surface layer of glasses.…”

“…Changing the molar ratio of glass components helps to make the glass structure with lower melting temperature, promoting precipitation of PeNCs with higher PLQE. [31,44,130] Modification in perovskite-related components…”

Perovskite quantum‐dots glasses with excellent stability and optical properties for laser projection

“…All inorganic PQDs have become the focus of researchers in the field of optoelectronics because of their excellent optical properties such as high quantum yield (up to 90%), narrow half‐height width, tunable luminescence in the full spectral range of visible light, as well as the characteristics of surface defect tolerance and no complex surface passivation 7–9 . However, PQDs composed of ionic bonds are extremely unstable and are easily affected by water, oxygen, high temperature, and ultraviolet light in the air, resulting in fluorescence quenching and performance degradation 10–13 . Based on the atomic‐scale instability mechanism of the internal crystal lattice of perovskite and the theory of thermodynamic defect level, a strategy of substituting Pb 2+ with Sb 3+ was designed to enhance the stability by inhibiting ion migration through heterovalent ion substitution 14 .…”

“…[7][8][9] However, PQDs composed of ionic bonds are extremely unstable and are easily affected by water, oxygen, high temperature, and ultraviolet light in the air, resulting in fluorescence quenching and performance degradation. [10][11][12][13] Based on the atomic-scale instability mechanism of the internal crystal lattice of perovskite and the theory of thermodynamic defect level, a strategy of substituting Pb 2+ with Sb 3+ was designed to enhance the stability by inhibiting ion migration through heterovalent ion substitution. 14 In summary, the phosphor wheel prepared by composite phosphor ceramics and PQDs embedded glasses produces an extremely wide-color-gamut under blue-LD.…”