CsPbX3 (X= Cl, Br, I) perovskite quantum dots embedded glasses: recent advances and perspectives

Improving the Luminescence, Hardness and Thermal Stability of Silicate Glass for White LED by Precipitation of Ba2YNbO6 Crystals

Polychromatic tunable luminescence of Eu3+ doped CsPbBr3 quantum dot glass ceramic induced by mechanical crystallization

CsPbI3 perovskite quantum dots (QDs) doped borosilicate glass was prepared by the process of melt-quenching and subsequent annealing. With the introduction of ZnO to the parent glass as the glass network intermediate, the optical properties of the resultant samples are dramatically enhanced. Both the photoluminescence (PL) intensity and photoluminescence quantum yield (PLQY) shows a strong dependence on ZnO concentration as ZnO is found to facilitate the precipitated of the QDs by reducing the connectivity of three-dimensional glass network built from SiO4 tetrahedrons. The tunable visible-band PL emission of the CsPbI3 QD-doped glass could find potential applications in white LEDs and lasers. 

Effect of ZnO on the crystallization and photoluminescence of CsPbI
 3
 perovskite quantum dots in borosilicate glasses

Energy transfer mechanism and new ratiometric thermometry strategy by the blue and yellow emissions of Dy

Available tunability of energy up-conversion in rare-earth (RE) ion doped nanomaterials has drawn great attention recently in the field of high-sensitive optical temperature transducer, but the intrinsically sharp fluorescence thermal-quenching and low energy transfer efficiency certainly limit further development. In this work, CsPbBr3 perovskite quantum dots (PQDs) was prepared by the melt-quenching method, simultaneously doping with Dy3+ in borosilicate glass, aiming to explore the thermochromic property. The novel phenomenon herein is that emerged bimodal emissions come from a luminescent active center of CsPbBr3 and a temperature-passivated RE Dy3+ ion, synergistically contributed to the remarkable relative sensitivities (2.631% K − 1). Interestingly, temperature-depended polychromatic luminescence among the PQDs embedded glass has been fully demonstrated as pumped by 365 nm ultraviolet light. Precise control of luminescent centers and color gamut is expected to design a temperature-sensitive material based on PQDs for promising optical applications.

Ke Wei

Papers

Temperature-dependent color-tunable luminescence in CsPbBr3: Dy3+ glass ceramic