A series of solid solution CaAl12-xGaxO19:Mn4+ phosphors were prepared via a high-temperature solid-state reaction. Their structural properties characterized by X-ray diffraction (XRD) and the luminescence was investigated photoluminescence spectra. The obtained phosphor has strong broad excitation band in range 250-550 nm, which can be easily excited UV, NUV blue light, emission centered at 655 nm between 600 800 due to 2Eg → 4A2g transition Mn4+ ion. PL spectra indicate that intensity...

Novel orange-red-emitting phosphors Ca3M2Ge3O12:Mn2+,Mn4+ (M = Al, Ga) with sufficient red light component were developed, and their lattice occupancy luminescent properties of different color centers have been studied. In Ca3M2Ge3O12:Mn, the abnormal self-reduction Mn4+ to Mn2+ occurs. The doped manganese ion (using MnO2 as Mn source) occupies dodecahedron Ca2+ site forming Mn2+(I) center orange emission, while it octahedral Al3+/Ga3+ Mn2+(II) deep emission. thermal quenching show that...

Gd3Ga5-x-δAlx-y+δO12:yMn solid solutions with improving luminescence properties were prepared via cation substitution and a controllable Mn valence state. The abnormal autoreduction from Mn4+ to Mn2+ ions was observed during the formation of Gd3Ga5-x-δAlx-y+δO12:yMn. doped manganese occupy octahedral Ga3+(1) Al3+(1) sites form luminescent center red emission at 630 nm centers deep light 698 nm, respectively, matching well absorption phytochrome (PR) far-red (PFR). With design concentration...

Dual-emitting and thermochromic manganese ion single doped ZnGa2-yAlyO4 phosphors were prepared by solid-state reaction. The regulation of the valence state luminescent properties, especially thermal stability ions in ZnGa2-yAlyO4, are discussed detail. When excited ultraviolet (UV) light, emission spectra ZnGa2O4:Mn2+,Mn4+ present an ultranarrow green band at 503 nm with a fwhm 22 nm, which derives from Mn2+ formed self-reduction Mn4+, red Mn4+ 669 nm. In addition, ZnGa2-yAlyO4:Mn2+,Mn4+...

Gd 2 GaSbO 7 :Cr 3+ ,Yb phosphors with efficient broadband NIR emission were prepared by a solid-state reaction.

A novel violet-excitable Na 3 YSi 2 O 7 :Eu 2+ green phosphor for a high-quality white LED was developed via salt-flux assistance.

Herein, a novel multifunctional nanoplatform was designed toward multimodality imaging and photothermal therapy (PTT). It found that Bi nanoparticles could grow in situ on the surface of NaYF4:20%Yb,2%Er@NaYF4:40%Yb@NaGdF4 core-shell (labeled as UCNPs). In this structure, UCNPs were mainly employed an upconversion luminescence (UCL) agent, whereas worked effective CT agent. Importantly, dense SiO2 shell to protect from oxidation, it also endowed with excellent hydrophilic ability. The UCL/CT...

A novel Bi³⁺ and Mn²⁺ co-activated Y₃Ga₅O₁₂ single-component white light-emitting phosphor was developed.

Novel NIR phosphors possess broadband absorption in the UV–Vis region and strong emission, matching well with spectral response of C–Si solar cell having a potential application cell.

UV excited, green-emitting Sr₄Gd₃Na₃(PO₄)₆F₂:Ce³⁺,Tb³⁺ phosphors with zero-thermal quenching of Tb³⁺ emission have been obtained and investigated in detail.

A new green light-emitting phosphor with a PLQY of 70% was prepared by doping Cu + into Cs 2 MnCl 4 . The WLED packaged mixing commercial red and blue phosphors :0.1Cu , exhibits high CRI ( R = 93) low CCT (4080 K).

Abstract Non‐invasive theranostics that integrate the advantages of multimodality imaging and therapeutics have great potential in field biomedicine. Herein, a new nanohybrid based on Bi 2 Se 3 ‐conjugated upconversion nanoparticles (UCNPs) has been successfully developed through simple situ growth strategy. Under 808 nm near‐infrared laser irradiation, UCNPs can emit bright visible light, whereas nanomaterial exhibits efficient photothermal conversion capacity. Moreover, as‐synthesized...

In this work, a novel red-emitting oxyfluoride phosphor Na2NbOF5:Mn4+ with an ultra-intense zero-phonon line (ZPL) was successfully synthesized by hydrothermal method. The phase composition and luminescent properties of were studied in detail. photoluminescence excitation spectrum contains two intense bands centered at 369 470 nm, which match well commercial UV blue light-emitting diode (LED) chips. When excited nm light, exhibits red light emission dominated ZPL. Notably, the color purity...

A novel Ce³⁺ → Tb³⁺ Eu³⁺ scheme is introduced into Y₄SiAlO₈N to develop NUV-excitable green and red phosphors.

The design and synthesis of responsive inorganic nanocapsules have attracted intensive research interest in cancer treatment. combination non-invasive diagnosis chemotherapy into a single theranostic nanoplatform is prospective the biomedical field. In this work, polyacrylic acid (PAA)-functionalized porous BiF3:Yb,Er nanocarrier was constructed via straightforward one-pot solvothermal strategy. Compared with undoped BiF3 sub-microspheres, lanthanide ion (Ln3+) doping endowed material...

Novel La₈Ba₂(Si₄P₂O₂₂N₂)O₂:Eu²⁺/Ce³⁺/Tb³⁺ apatite phosphors with tuneable light-emission have been developed.

A novel Eu 2+ activated oxonitridosilicate cyan phosphor for enhancing the color quality of a violet-chip-based white LED was developed.

Single-component white-light luminescent materials are considered an economical and facile choice for phosphor-converted white light-emitting diodes (pc-WLEDs). Here, a new single-component white-light-emitting material Cs2MnCl4:Eu2+ based on the combination of lead-free halide structure rare-earth ion is first reported. Benefiting from smart dilution–sensitization design strategy, light composed dual broad emission originating Eu2+ (blue light, 444 nm, 4f65d1 → 4f7) Mn2+ (yellow 566 4T1g...

A series of novel Eu2+/Ce3+/Tb3+ ion doped La8Ca2(Si4P2O22N2)O2-based apatite structure oxynitride phosphors have been synthesized by a solid-state method. The phase purity has checked X-ray diffraction (XRD) and the Rietveld photoluminescence excitation (PLE) spectra indicate that obtained broad bands in n-UV range, which is favourable property for application as n-UV-WLED phosphors. concentration quenching investigated detail. temperature-dependent luminescence efficiency study shows...

A series of CaAl6Ga6O19:Cr3+,Ln3+ (Ln = Yb, Nd, and Er) novel near-infrared (NIR) emitting phosphors were prepared via a high-temperature solid-state reaction. The luminescence spectra decay lifetimes these samples measured to prove the energy transfer process from Cr3+ Ln3+ ions. can efficiently convert short-wavelength sunlight in near-ultraviolet visible (UV-Vis) regions into emission, which matches higher sensitivity region c-Si solar cells. maximal efficiencies 25.84%, 73.90%, 29.46%,...

Novel Y₃GaO₆:Bi³⁺/Eu³⁺phosphors have been prepared, in which the emission colour of Y₃GaO₆:Bi³⁺can be adjusted from bluish violet to orange red by changing Bi³⁺ion content.