Themed collection Photoluminescence of lanthanide-doped phosphor materials

This review provides a historical overview of the role of lanthanide luminescence in scientific advancements that have enabled past, current, and future commercial technologies.

Rare earth doped self-activated phosphors show multimodal behavior applicable in color tunability, spectral converters and security ink.

In this study, we synthesized and characterized Eu³⁺-doped Na₃Ba₂LaNb₁₀O₃₀ phosphors for white LEDs using a high-temperature solid-state method, revealing strong red emissions and high luminescence efficiency.

This paper investigates the synthesis and luminescence characteristics of Tm³⁺/Tb³⁺/Eu³⁺ co-doped Sr₄Nb₂O₉ (SNB) phosphors as potential candidates for white light-emitting diodes (WLEDs).

Contour of emission intensity variation in LAO:Eu/Mn phosphor with change in excitation wavelength.

In the present work, Eu²⁺/Dy³⁺ ions doped/co-doped into persistent SrAl₂O₄ microparticles have been developed and utilized for fingermarks detections.

A series of SrZrO₃:xHo³⁺ (x = 0.01, 0.03, 0.05, 0.07, 0.09, and 0.11 mol) perovskite phosphors have been synthesized by using the sol–gel technique.

The solid-state reaction method was utilised to create a down-conversion phosphor in an air environment in CaY₂O₄:Eu³⁺ nanocrystalline material.

Addition of Fe²⁺ to a solution of ferrozine and Er³⁺-doped upconverting nanoparticles induces a clear yellow to purple colour change, and excitation at 980 nm causes a decrease in the intensity of the green upconversion visible emission band.

The studied phosphor LiAl(PO₃)₄: x mol% Tb³⁺, y mol% Eu³⁺, z mol% R⁺ (R = Na, K) shows excellent photoluminescence properties with efficient energy transfer from Tb³⁺ to Eu³⁺, enhancement in intensity using charge compensation and show the photochromic nature.

Mechanoluminescence set up for ML measurements using dynamic compressive load.

Dy³⁺ doped Li₃Ba₂Gd₃(WO₄)₈ quaternary tungstate with greenish-yellow emission under 445 nm shows blue excitation for application in wLEDs.

The upconversion (UC) emission spectra recorded by using 980 nm laser of the prepared phosphors. The excitation wavelength shows intense blue colour. The anti-counterfeit application of the prepared sample demonstrated.

In recent decades, several nanocomposites developed by chemical synthetic routes, have been demonstrated as efficient photocatalysts for the photodegradation of hazardous organic dyes.

Enhancement in emission intensity of Sm³⁺ ion in the presence of smaller and larger ionic radii ions and the emitted orange-red color used in LED applications.

Alkaline earth selenate nanoparticles like SrSeO₄ and SrSeO₄:Eu³⁺ could be synthesized for the first time using a micro emulsion method combined with an in situ-sintering step.

In this work, Er³⁺/Yb³⁺ doped Gd₂O₃ phosphor samples were synthesized through a combustion method and then characterized through X-ray diffraction and FE-SEM techniques.

Thermally stable and colour tunable photoluminescent features of bi-activated (Dy³⁺/Eu³⁺) NCMS phosphor to utilize in versatile optoelectronic devices.

This study employed that the green-emitting Er³⁺-Yb³⁺:NaZr₂(PO₄)₃, NASICON phosphors are very much promising in optical thermometry applications.

We report a comprehensive study of the structural, morphological, and optical properties, and UC-based ratiometric temperature sensing behavior of (α) cubic and (β) hexagonal phases of NaYF₄:Yb³⁺/Er³⁺ nanoparticles.

Tm³⁺/Yb³⁺ codoped LaVO₄ and GdVO₄ phosphors are successfully synthesized using solid state reaction methods and then upconversion emission studies are performed.

Incorporation of Mn⁴⁺ in the Ho³⁺/Yb³⁺:SnWO₄ phosphors modifies the green emission from Ho³⁺ to broadband on increasing pump power upon 980 nm excitation.

Change in colour after annealing at different temperatures: (a and d): NaLi₂PO₄:Cu(II) and NaLi₂PO₄:Cu(I) in air, (b and e) NaLi₂PO₄:Cu(II) and NaLi₂PO₄:Cu(I) in 10% H₂, (c and f) NaLi₂PO₄:Cu(II) and NaLi₂PO₄:Cu(I) in CO/CO₂, respectively.

The Eu³⁺/Mg²⁺/Ca²⁺ doped and co-doped ZnGa₂O₄ phosphors give blue and red emissions, which are enhanced via Mg²⁺/Ca²⁺ doping. They also show better color tunability and thermal stability.

This research paper reports the synthesis and luminescence study of an Eu³⁺ activated SrY₂O₄ phosphor prepared by a modified solid-state reaction method with varying concentrations of Eu³⁺ ions (0.1–2.5 mol%).

Copper aluminate nanoparticles synthesized by solution combustion method using urea as a fuel and tulsi extract as a reducing agent for display applications.

Chromium-doped calcium aluminozincate phosphor with a distinct amount of chromium was prepared via the sol–gel technique.

Dy³⁺ and Eu³⁺ ions are utilized to manipulate traps and confirm the correlation between ML and traps in a SrGa₂O₄:Tb³⁺ phosphor with adjustable ML color, which presents a new approach to achieve multicolor ML and information security.

Security application of Er³⁺/Yb³⁺ doped NaGd(WO₄)₂ phosphor upon 980 nm excitation and absolute and relative sensitivity of Er³⁺/Yb³⁺ doped NaGd(WO₄)₂ phosphor and PIG.

Synthesized nano-composites are green emissive phosphors that have high band gaps (∼5.5–5.8 eV) and are found to be suitable for photonic and latent finger printing (LFP) applications.

We demonstrate an enhancement in the upconversion (UC) emission and temperature sensing property of a CaMoO₄:Er/Yb phosphor via distortion of the local symmetry environments.

In the present communication, ZrTiO₄ nanoparticles (NPs) are synthesized by the solution combustion method using urea (ZTOU) and oxalyl dihydrazide (ODH) (ZTODH) as fuel and calcined at 700 °C.

Here, we report a series of white-emitting Ba(La_2−xDy_x)ZnO₅ (x = 0–7 mol%) phosphors synthesized via a high-temperature solid-state reaction.

Deoxyglucose conjugated nanoparticles with persistent luminescence have shown theragnostic potential.

The Ho³⁺/Yb³⁺ doped Y₂O₃ phosphor samples were synthesized through a combustion method and then were annealed at 800 °C, 1000 °C, and 1200 °C.

Luminescence properties of Li₂MgGeO₄:Ln³⁺ (Ln = Pr, Tm) depend significantly on the excitation wavelengths. Several emission bands are observed, which can be assigned to ceramic matrix and characteristic transitions of Pr³⁺ and Tm³⁺ ions.

A novel white light emitting dysprosium doped Na₃Ba₂LaNb₁₀O₃₀ phosphor, having a good internal quantum yield were synthesized.

In this work, a CaYF₅:Ho³⁺/Yb³⁺ upconversion phosphor was synthesized and its structural, morphological, and optical properties were studied. Apart from these studies, latent fingerprint detection and security ink applications were also demonstrated using this phosphor.

Cool green light emanating monoclinic Y_4−xAl₂O₉:xTb³⁺ (x = 1–5 mol%) nanophosphors have been fabricated through gel-combustion method.

A material's luminosity characteristics, which in turn dictate its applicability, are critically influenced by its structure.

Luminescence properties of CaF₂:Tb³⁺ nanoparticles were studied in order to investigate the effect of CaF₂ native defects on the photoluminescence dynamics of Tb³⁺ ions.

The Eu³⁺, Cr³⁺ co-doped LaVO₄ phosphor gives red (614 nm) and NIR (700 nm) emissions due to Eu³⁺ and Cr³⁺ ions, respectively. The decrease in PL intensity of the Eu³⁺ doped LaVO₄ phosphor is due to energy transfer from Eu³⁺ to Cr³⁺ ions.

Ho³⁺-doped YVO₄ phosphors were successfully prepared via a sol–gel process in which citric acid was used as a chelating agent.

Exploiting the unique characteristics of various materials to create novel hybrid materials opens up innovative possibilities for cutting-edge applications across numerous fields.