Abstract In this work, an environmentally friendly and novel oxide‐based mechanoluminescent material, Sr 3 Al 2 O 6 : Eu 3+ , which can serve as the alternative for widely used but hazardous transition metal–doped sulfides is reported. This oxide could exhibit highly efficient photoluminescence, even more mechanoluminescence embedded into polydimethylsiloxane matrix under mechanical stimulation. The emitting color of resultant /polydimethylsiloxane elastomer composites be further manipulated...

Abstract 2D perovskites demonstrate higher moisture stability, oxygen content, thermal and a significantly lower ion migration/phase transition occurrence in comparison to 3D perovskite. These advantages imply huge potential for perovskite commercial applications the photovoltaic field. However, horizontal arrangement of organic layer severely hinders transport carriers, thus, power conversion efficiency solar cells (PSCs) is than that 3D. Controlling crystallization orientation achieve...

In order to explore a new family of phosphate phosphors, the synthesis and crystal structure novel family, Ca19M2(PO4)14 (M = Mg, Zn, Mn), were investigated. Eu3+ doped Ca19Mg2(PO4)14 red phosphor was also successfully synthesized with objective application in ultraviolet-based light-emitting diodes (LEDs) field emission displays (FEDs). The characteristic photoluminescence properties studied detail by excitation (PLE), (PL) spectra decay times. Ca19Mg2(PO4)14:0.06Eu3+ offers higher...

A series of Mg2-xAl4Si5O18:xDy(3+) (0 ≤x≤ 0.18) samples were synthesized, for the first time, by a solid state method both in reducing atmosphere and air. XRD, diffuse reflectance spectra, excitation emission decay times thermal quenching used to investigate structure, photoluminescence, energy transfer properties. The results show that Mg2Al4Si5O18:Dy(3+) can efficiently absorb UV light emit violet-blue range 400 500 nm from oxygen vacancies host as well blue (∼480 nm) yellow (∼576 f-f...

The development of luminescent materials for anticounterfeiting and encryption is great importance. Herein, we develop a multistimuli-responsive material, Na2CaGe2O6:Pb2+/Er3+, use it to print images. photoluminescence upconversion luminescence these images show different patterns colors under stimuli. photostimulated (PSL) the printed causes dynamic changes in appearance accordingly applied multimodal on banknotes. PSL also virtual war scenario demonstrate that PSL-encrypted information...

Anticounterfeiting is a highly required technique to protect the product and consumer rights in modern society. The conventional luminescent anticounterfeiting based on downconversion luminescence excited by an ultraviolet light, which easy be faked. In this work, we realized six modes niobate-based structure (LiNbO3:RE3+, RE3+ = Pr3+, Tm3+, Er3+, Yb3+), photostimulated of LiNbO3:Pr3+, upconversion color evolution LiNbO3:Er3+ were first presented. Based above LiNbO3:RE3+, multilevel devices...

Abstract Zero‐dimensional Cs 3 Cu 2 Cl 5 exhibits intriguing optical properties, which can meet the basic requirements of ideal scintillator application. Here, green emitter nanosheets are successfully synthesized, and by doping with 2% potassium (K + ), their photoluminescence quantum yield (70.23% to 81.39%), radioluminescence intensity, stability improved. Further experimental theoretical studies point out that: (1) K brings neighboring [Cu ] 3− dimers groups closer, leading lattice...

In this Study, Mg2+ and Ba2+ act to enhance the maximum emission of Sr2.97SiO5:0.03Eu2+ significantly redshift band orange-red region in Sr2.97–x–yMgxBaySiO5:0.03Eu2+. Size mismatch between host doped cations tunes photoluminescence spectra shift systematically. A slight blue when increasing amount occurs Sr2.97–xEu0.03MgxSiO5 lattices, a rapid red is codoped Sr2.57–yEu0.03Mg0.4BaySiO5 lattices. The were tuned from 585 601 nm by changing concentration Ba2+. Accordingly, we propose underlying...

Abstract Two‐dimensional (2D) Ruddlesden–Popper (RP) CsPbI 3 perovskite possesses superior phase stability by introducing steric hindrance. However, due to the quantum and dielectric confinement effect, 2D structures usually exhibit large exciton binding energy, charge tunneling barrier across organic interlayer is difficult eliminate, resulting in poor transport performance. Here, a multiple‐ring aromatic ammonium, 1‐naphthylamine (1‐NA) spacer developed for RP solar cell (PSC). Theoretical...

Europium-doped apatite Ca10(SiO4)3(SO4)3F2 (CSSF) has been successfully synthesized by solid state reaction. The crystal structure of CSSF:0.006Eu2+ is refined the Maud refinement method. Optical properties prepared samples are found to depend on rare-earth metal–oxygen distances and lattice iconicity. excitation spectra CSSF:Eu2+ phosphors centered at 350 nm covered range from 250 450 nm. Under excitation, emission show a blue (centered 420 nm) green 525 band, respectively. Meanwhile,...

GABr post-treatment was applied to optimize the CsPbI₃PSCs, which resulted in a greatly enhanced PCE from 16.58% 18.02%.

This review discusses the latest progress in improving performance and stability of CsPbI₃PSCs based on metastable phase.

Abstract Organic–inorganic hybrid metal halides are widely used in X‐ray detection and imaging due to their high absorption efficiency, ease of synthesis, efficient luminescence. However, the issue lead toxicity remains a concern. In this study, non‐toxic, 0D 2,2′‐(Ethylenedioxy)bis(ethylamine) manganese (II) bromide (EDBEMnBr 4 ) is synthesized using simple mechanical grinding method solution that exhibits intense green emission at ≈525 nm. Moreover, change structure under influence...

A series of single-composition color-tunable phosphors Ca5La5(SiO4)3(PO4)3O2: Ce3+,Mn2+(CLSPO:Ce3+,Mn2+) are synthesized by solid-state reaction, and their luminescence properties investigated. The obtained exhibit high absorption strong excitation bands in the wavelength range 260–400 nm, matching well with dominant emission band a UV light-emitting-diode (LED) chip. energy transfer from Ce3+ to Mn2+ ions CLSPO:Ce3+,Mn2+ has been studied demonstrated be resonant type via dipole-quadrupole...

A new Ca2La8(GeO4)6O2 (CLGO) compound has been synthesized via solid-state reaction process for the first time. The crystal structure of CLGO was refined and determined by Maud Program. photoluminescence spectra (PL), cathodoluminescence (CL), lifetimes as well temperature dependence CLGO:RE3+ (RE3+=Eu3+, Tb3+, Dy3+, Sm3+, Tm3+) were investigated in detail. Under excitation ultraviolet, show red, green, yellow, orange, violet emission, respectively.

A single phase emission-tunable Sr₇La₃[(PO₄)_2.5(SiO₄)₃(BO₄)_0.5](BO₂):Ce³⁺,Mn²⁺ phosphor was synthesized and the photoluminescence, energy-transfer mechanism thermal properties were investigated.

We successfully tailor the properties of a well-known commercial lamp with Zn₂SiO₄:Mn²⁺ phosphor as novel, highly efficient, long-lasting green by using co-doping method.

The formation mechanism of the all-inorganic halide perovskite (AIHP)-related (<italic>e.g.</italic>, CsPbBr₃, Cs₄PbBr₆, and CsPb₂Br₅) nanocrystals have been studied, which is helpful to realize rational design AIHP-related nanocrystals.