Materials For White Light-emitting Diodes Research Articles

Influence of carbon quantum dots as modifier and SiO2 shell coating as a protecting layer in YAlO3:Cr3+ phosphors for multimodal applications

This study focuses on the synthesis of SiO2-coated carbon dots (CDs) grafted onto YAlO3:Cr3+ (YAP:Cr3+) nanophosphors (NPs) through a combustion method. The CDs enhance the absorption cross-section of Cr3+ ions, significantly boosting the luminescence of YAP:Cr3+ by 19.29-fold. Further improvement is achieved with a SiO2 coating, leading to a 48.73-fold increase in photoluminescence intensity. The NCs are colour tunable, with emissions ranging from pinkish-red to blue, depending on the concentration of CDs and the excitation wavelength. These properties make them suitable for diverse applications, such as ratio metric fluorescence sensors for detecting Fe3+ ions within the 0–350 µM range, with high sensitivity (0.2 µM) and a low detection limit (4.93 μM). Additionally, they serve as material for white light-emitting diodes (W-LEDs), achieving CIE coordinates of (0.31, 0.30) and a rendering index of 94. The NCs also function as an optical thermometer with a sensitivity of 0.31 % K−1 at 320 K, making them ideal for temperature sensing applications. Moreover, their stability and dual-emissive nature make them highly effective in latent fingerprints (LFPs) detection, enabling high-resolution, level III fingerprint analysis. The dual emission properties of CDs and Cr3+ ions position these NCs as multifunctional materials, suitable for optical sensing, lighting, and security applications.

Solvent mediated synthesis of multicolor narrow bandwidth emissive carbon quantum dots and their potential in white light emitting diodes

The development of efficient and environmentally sustainable materials for white light-emitting diodes (WLEDs) is of paramount importance in the field of lighting technology. In this study, we present a solvent-modulated synthesis approach for the fabrication of multicolor narrow-bandwidth emissive carbon quantum dots (CQDs) as a promising solution for constructing WLEDs. The synthesis method involves the controlled reaction of organic precursors in different solvent environments, leading to the formation of CQDs with distinct emission wavelengths with a relatively small full width at half maximum, ranging from 28 to 42 nm. Moreover, these synthesized multicolor CQDs demonstrate a remarkably high fluorescence quantum yield of up to 65%, indicating their potential for constructing efficient WLED when incorporated in polymer matrix and coated on the surface of blue light-emitting diode (LED).

Intramolecular-Catalyzed Vitrimers with White-Light Emission for Light-Emitting Diode Encapsulation.

Currently available encapsulating materials for white light-emitting diodes (WLEDs) have certain limitations, such as the toxicity of phosphors and the non-recyclable nature of the encapsulating materials. In this study, relatively promising encapsulating materials with two significant advantages have been developed. First, chips can be directly encapsulated without phosphors using luminescent encapsulating materials. Second, the encapsulating materials can be reprocessed for recycling via intramolecular catalysis. To this end, blue-light emitting vitrimers (BEVs) have been prepared by the reaction of epoxy resin with amines and are found to exhibit strong blue emission and fast stress relaxation via internal catalysis. To obtain white-light emission, a well-designed yellow component, perylenetetracarboxylic dianhydride, is grafted into the BEVs to generate white-light emitting vitrimers (WEVs). A rare synergy of blue and yellow light emission affords white-light emission. When the WEV is used as an encapsulating adhesive for 365-nm LED chips without inorganic phosphors, stable white light with CIE coordination (0.30, 0.32) is successfully achieved, indicating a promising future for WLED encapsulation. This article is protected by copyright. All rights reserved.

Realizing multicolor tunable photoluminescence in La2MgTiO6: Tb3+, Eu3+ phosphors via energy transfer and application for white light-emitting diodes

The achievement of multiple emission color phosphors has a significant importance in screen display, lighting devices, and multicolor imaging, but it still faces formidable challenges. In this work, double perovskite La2MgTiO6: Tb3+, Eu3+ phosphors with tunable emissions are designed and successfully synthesized. The obtained phosphors can emit intense green (Tb3+), red (Eu3+), and yellow emissions (Tb3+/Eu3+) via varying the co-doping concentration of Tb3+ and Eu3+. The CIE coordinates exhibit an excellent linear behavior in La2MgTiO6: Tb3+, Eu3+, revealing the possibility of linear adjustment of multiple emission colors. Detailed material characterization demonstrates that the multicolor tunable emission originates from energy transfer between Tb3+ and Eu3+. The decay dynamics analysis suggests that the multipole interaction between Tb3+ and Eu3+ is quadrupole-quadrupole interaction. A white light-emitting diode device with color rendering index of 84.7, correlated color temperature of 4684 K, and CIE coordinate of (0.3472, 0.3083) is fabricated by combining La2MgTiO6: Tb3+, Eu3+ yellow phosphor and BaMgAl10O17: Eu2+ blue phosphor. Our results reveal that La2MgTiO6: Tb3+, Eu3+ phosphors are promising luminescent materials in white light-emitting diodes.

Facile synthesis, novel structure, and tunable luminescence properties of K6Bi13(PO4)15:Dy3+,Eu3+ phosphors for ultraviolet converted white light-emitting diodes

A variety of novel Dy3+/Eu3+ mono- and co-doped K6Bi13(PO4)15 (KBPO) luminescent materials have been fabricated by a simple solid-state method for the first time. Both experimental studies and theoretical calculations verify that the K6Bi13(PO4)15 crystals are suitable to be utilized as host materials for the lanthanide activator ions. The XRD, EDS, and XPS results reveal that the Dy3+ and Eu3+ have been effectively incorporated into the KBPO host matrix and do not damage the structure of KBPO. The Dy3+ or Eu3+ mono-doped phosphors display the characteristic spectral patterns of the activator ions upon UV excitation whereas an energy transfer between Dy3+ and Eu3+ occurs which helps to obtain the tunable luminescence of the KBPO:Dy3+,Eu3+ phosphors. The emission colors of the KBPO:Dy3+,Eu3+ regularly shift from green-blue, through white, and finally toward yellow and orange-red by varying the activator doping concentrations under a fixed excitation wavelength. Interestingly, the single-phase white light emitting phosphors with CIE chromaticity coordinates of (0.3122, 0.3106) and (0.3602, 0.3246) are obtained by doping appropriate concentrations of Dy3+ and Eu3+, which match well with the standard white light illuminate of (0.333, 0.333). Moreover, the annealing conditions are optimized and the luminescent mechanisms and temperature-dependent luminescence performance are systematically investigated. Finally, the WLEDs device prepared by KBPO:Dy3+,Eu3+ phosphor and UV chip displays a dazzling white light with favorable CIE (Commission Internationale de I'Eclairage 1931 chromaticity) coordinates, color rendering index (Ra), correlated color temperature (CCT), and thermal stability, which provides direct evidence that the as-prepared inorganic luminescent materials may have prospects as an eminent single-phase white light emitting materials for white light-emitting diodes (WLEDs) and optoelectronic devices.

Influence of dysprosium oxide on physical and optical characteristics of zinc boro-tellurite glasses for optoelectronic device application

Glasses with compositions [(50-X) TeO2 − 20 B2O3 − 30 ZnO − x Dy2O3] where X = 0, 1, 2, 3, 4 and 5 mol% were synthesized by melt quenching method. X-ray diffraction (XRD) measurements confirmed the amorphous nature of the as-prepared glasses. UV–Vis absorption and PL spectroscopy studied the optical properties of the glass samples. High absorption of glass samples observed up to 3 mol% of Dy2O3, and then increasing the concentration of Dy2O3 reduces the absorption. The increasing concentration of Dy2O3 formed the glass sample containing 4 and 5 mol% Dy2O3 acts as a UV band-cutting filter. CIE achromatic color coordinates and CCT results for visible transitions confirm the ability of the glass samples under study as potential materials for white light-emitting diodes and laser application. The studies suggest that these materials are suitable for optoelectronic application.

Deep blue, cyan, orange-red, and white multicolor emissions generated by Bi3+/Eu3+ activated KBaYSi2O7 luminescent materials for white light-emitting diodes

A variety of Bi3+ and/or Eu3+ doped KBaYSi2O7 phosphors with deep blue, cyan, orange-red, and white light multicolor emissions have been fabricated by a Pechini sol-gel (PSG) method. The KBaYSi2O7:Bi3+ phosphors exhibit an intense cyan emission or a unique narrow deep blue emission when excited by different wavelengths, which may bridge the cyan gap or act as a promising deep blue phosphor for white light-emitting diodes (WLEDs). The tunable multicolor emissions can be achieved by changing the Bi3+ doping concentrations. The Bi3+/Eu3+ co-doped KBaYSi2O7 phosphors display intrinsic emissions of Bi3+ and Eu3+ and an energy transfer process between Bi3+ and Eu3+ can be detected. The luminescence colors of KBaYSi2O7:Bi3+,Eu3+ regularly shift from blue, through cold and warm white, finally toward orange-red by adjusting the relative doping concentrations of Bi3+ and Eu3+. The single-phase white light-emitting material can be generated in both cold and warm white regions by simply varying the Eu3+ doping concentrations. Furthermore, three kinds of WLEDs devices are fabricated by KBaYSi2O7:Bi3+ or KBaYSi2O7:Bi3+,Eu3+ phosphors, which can exhibit dazzling white light emissions with eminent CIE coordinates, correlated color temperature, and color rendering index. The result offers direct evidence that the as-synthesized phosphors may be potentially applied in WLEDs and solid-state lighting.

Mn4+ activated dodec-fluoride red phosphor Na3Li3In2F12:Mn4+ with excellent waterproof stability for WLEDs

Mn4+ activated fluoride red phosphors, as candidate red materials in white light-emitting diodes (WLEDs), have received widespread attention. However, the poor water stability limits their application. Herein, a novel dodec-fluoride red phosphor Na3Li3In2F12:Mn4+ with good waterproof stability was successfully synthesized by solvothermal method. The crystal structure, optical property, micro-morphology, element composition, waterproof property and thermal behavior of Na3Li3In2F12:Mn4+ phosphor were analyzed. Under the 468 nm blue light excitation, the Na3Li3In2F12:Mn4+ phosphor has narrow emission bands in the area of 590–680 nm. Compared with commercial red phosphor K2SiF6:Mn4+, the Na3Li3In2F12:Mn4+ phosphor possesses better waterproof stability. When soaked in water for 360 min, the PL intensity of the Na3Li3In2F12:Mn4+ phosphor remains at initial 80%. Finally, warm WLEDs with CRI of 87 and CCT of 3386 K have been fabricated using blue InGaN chip, YAG:Ce3+ yellow phosphor and Na3Li3In2F12:Mn4+ red phosphor.

Luminous LaAlO3 :Dy3+ perovskite nanomaterials: Synthesis, structural, and luminescence characteristics for white light-emitting diodes.

A single-phase perovskite LaAlO3 :Dy3+ phosphor was synthesized using a gel-combustion method at 600°C utilization with hexamethylenetetramine as a fuel. Further calcination of the samples was carried out (800 and 1000°C) to investigate the resultant effect on the crystalline and luminescence behaviour. The crystal structure had a cubic unit cell (space group Pm3̅m) and was examined using the Rietveld refinement and X-ray diffraction data. Additionally, Debye-Scherrer and Williamson-Hall equations were applied to determine other structural features. The particle size and morphology of phosphors were evaluated using transmission electron microscopy. Diffraction measurements were supported by the various metal-oxygen vibration modes studied with the help of Fourier transform infrared spectroscopy. Energy-dispersive X-ray analysis verified the chemical composition of synthesized sample. Luminescence spectra of the LaAlO3 :Dy3+ phosphors exhibited intense bands for 4 F9/2 →6 H15/2 (482 nm, bluish region) and 4 F9/2 →6 H13/2 (574 nm, yellowish region) transitions. Commission Internationale de L'Eclairage and correlated colour temperature data confirmed the cool-white emission of the samples under ultraviolet light excitation. The interesting and advantageous luminescence characteristics of LaAlO3 :Dy3+ phosphors make them potential materials for white light-emitting diodes.

Orange-emitting bimetallic nanoclusters combined with cyan-emitting Fe@TAOH as white light-emitting materials

White-light-emitting diodes (WLEDs) possess many merits, such as high efficiency and stability. Developing cost-effective, environmentally friendly, high-performance luminophores to achieve high-quality, full-spectrum, white lighting is of great importance to the construction and progress of WLEDs. In this work, solid-state, highly luminescent orange-emitting nanoclusters (MgCl2-Lys-Ag/Au NCs) were prepared via the salt-induced precipitation of Lys-Ag/Au NCs from solution, which showed a high absolute quantum yield of 44.5%. A cyan-emitting metal-organic framework (MOF)-like nanomaterial (named Fe@TAOH) was also prepared by the self-assembly of the coordination compound of Fe3+ and TAOH acted upon by H3PO4via H-bonding and π-π stacking interactions, which showed an emission peak at 485 nm and an absolute quantum yield of 21.7%. The potential application of the two facile-synthesis, low toxicity, and highly luminescent materials in WLEDs was investigated. The WLEDs was constructed by coating powdered Fe@TAOH and MgCl2-Lys-Ag/Au NCs samples on commercial GaN LED chip with 365 nm emissions, and it exhibited acceptable white light characteristics with a CIE color coordinates and a color rendering index (CRI) of (0.28, 0.34) and 79.6, respectively, implying good prospects in the field of WLEDs.

One-step preparation of blue-emitting CsPbBr3 quantum dots loaded on natural mineral halloysite nanotube

All-inorganic cesium lead halide perovskite quantum dots (QDs) have attracted widespread attention due to unique photoelectric properties. However, blue-emitting (CsPbClxBr3−x, 0 < x ≤ 3) QDs have poor stability and low photoluminescence quantum yields (PLQY), which limits its application in perovskite based light-emitting diodes (LEDs). The chlorine-free CsPbBr3 QDs have fewer crystal defects and a more stable crystal structure. Here, we prepared CsPbBr3 QDs with adjustable photoluminescence (PL) (489–519 nm) by controlling the reaction temperature and composited it with natural mineral halloysite (Hal) nanotubes. The as-prepared CsPbBr3@Hal (100 °C) have high PL intensity, bright blue emission and enhanced stability. Under an open ambient condition, the CsPbBr3@Hal (100 °C) can still maintain 92.4% of original PL intensity after 60 days of storage. In addition, after 280 h of continuous irradiation with 365 nm UV lamp, its PL intensity still maintained 71%. Finally, a white LED (WLED) fabricated by incorporating the CsPbBr3@Hal (100 °C) and commercial red CaAlSiN3: Eu2+ phosphor on the 395 nm InGaN blue-violet chip showed the CIE chromaticity coordinates of (0.3358, 0.3331). This work provides a new way for the synthesis and application of blue-emitting CsPbBr3 perovskite materials in WLEDs and display devices.

Temperature-modulated porous gadolinium micro-networks with hyperchrome-enhanced fluorescence effect

Porous gadolinium micro-networks with hyperchrome-enhanced fluorescence effect are prepared for white light-emitting diodes and highly-efficient peroxidase-like catalyst. • Gd-MNs with hyperchrome-enhanced fluorescence are prepared by a facile one-pot hydrothermal method. • Porous Gd-MNs with tunable porosity can be obtained by controlling the reaction temperature. • Porous Gd-MNs as the carrier can be well used for white light-emitting diodes and peroxidase-like catalyst. Porous and luminescent functional materials having well-controlled morphology are crucial in the field of adsorption, catalysis, and drug release. Herein, we propose the mechanism of hyperchrome-enhanced fluorescence (HEF) for the synthesis of highly fluorescent gadolinium micro-networks (Gd-MNs) via a facile one-pot hydrothermal treatment of almost non-luminescent Gd 3+ ions / citric acid (Gd 3+ /CA) complexes. It is found that after high-temperature polymerization, a strong π-π* transition occurs in the Gd-MNs, which significantly enhances the absorption of light. So, our proposed HEF effect as a new photoactivation strategy can efficiently improve the fluorescence (FL) emission of optical materials by creating a large π-conjugated structure. Surprisingly, the FL of Gd-MNs is 152 times higher compared to that of Gd 3+ /CA complexes. In particular, porous Gd-MNs (P-Gd-MNs) having tunable porosity can be obtained by changing the reaction temperature, as the formation of the porous structure is strongly dependent on the release of H 2 O molecules, coordinated with Gd 3+ ions. Because of their porous structure and good FL properties, P-Gd-MNs is an ideal material for white light-emitting diodes (WLEDs) with adjustable correlation color temperature, by embedding fluorescent carbon dots into their pores. Besides, P-Gd-MNs can also be transformed into a peroxidase-like catalyst by directly reducing the Cu 2+ ions of the porous surface. Moreover, Cu coated P-Gd-MNs can also be used for catalysing the degradation of rhodamine 6G dye with a degradation efficiency of about 100%. Hence, the facile synthesis of P-Gd-MNs opens new avenues for its potential applications in WLEDs fabrication and biocatalysis.

Synthesis, photoluminescence and Li+ concentration effect on new reddish phosphor Li2Sr2Al(PO4)3:Sm3+ for white LEDs

A series of Sm3+ doped Li2Sr2AlP3O12 reddish phosphors has been synthesized by traditional solid-state reaction method. The emission spectrum of Li2Sr2AlP3O12:Sm3+ phosphor is composed of four sharp emission bands at 561, 596, 643 and 705 nm, respectively. We investigated the influence of Sm3+ and Li+ concentration on the luminescent properties of phosphors, among which Li1.98Sr1.96AlP3O12:0.04Sm3+ shows the strongest emission. The phosphors exhibit luminescence quenching as Sm3+ concentration is more than 0.04 mol%, which is due to dipole–dipole interaction between neighbouring Sm3+ ions. Li ions can not only enhance the emission intensity but also extend the luminescence lifetime, which is probably attributed to the suitable Li+ contents that reduce the crystal defects of phosphors. In addition, Sm3+ doped Li2Sr2AlP3O12 phosphor with the chromaticity coordinate (0.59, 0.41) can be demonstrated as a potential reddish luminescence material for white light-emitting diodes.

Room-temperature one-pot synthesis of highly stable SiO2-coated Mn-doped all-inorganic perovskite CsPb0.7Mn0.3Br0.75Cl2.25 quantum dots for bright white light-emitting diodes

In this paper, we report a simple one-pot strategy to synthesize highly stable SiO2-coated orange-yellow CsPb0.7Mn0.3Br0.75Cl2.25 quantum dots with strong orange-yellow photoluminescence. The microstructure characterization indicates that the CsPb0.7Mn0.3Br0.75Cl2.25 quantum dots were effectively encapsulated by the SiO2. The SiO2-coated CsPb0.7Mn0.3Br0.75Cl2.25 quantum dots show higher humidity stability and thermal stability than the CsPb0.7Mn0.3Br0.75Cl2.25 quantum dots without SiO2 coating. The white light-emitting diodes (WLEDs) were obtained by coating orange-yellow CsPb0.7Mn0.3Br0.75Cl2.25@SiO2 and blue CsPbBrCl2@SiO2 quantum dots on the ultraviolet gallium nitride light-emitting diode chip. The as-prepared white light-emitting diodes show bright white light emission with a color coordinate of (0.3347, 0.2825), color rendering index of 82 and correlated color temperature of 5329 K. The results provide a simple method to fabricate stable orange-yellow luminescent material for white light-emitting diodes.

Luminescence properties of Eu3+ activated Y2MoO6 powders calcined at different temperatures

In the last decade, an immense progress has been made in white LEDs, mainly due to the development of red-emitting phosphors. In this paper, we report on the synthesis of Eu3+ activated Y2MoO6 by a self-initiated and self-sustained method. The obtained powder was calcined at various temperatures in the 600-1400?C range and examined by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and photoluminescence spectroscopy (PL). The results revealed that all powders are single phase Y2MoO6:Eu3+, with particle size in the nanorange at lower treatment temperatures (600 and 800?C) and in the microrange at higher calcination temperatures (1000-1400?C). The obtained powders are promising materials for white light-emitting diodes as they can efficiently absorb energy in 324-425 nm region (near-UV to blue light region) and emit at 611 nm in the red region of the spectrum, while exhibiting high thermal and chemical stability.

High perovskite-to-manganese energy transfer efficiency in single-component white-emitting Mn-doped halide perovskite quantum dots

Taking advantages of negligible reabsorption and no phase separation, single-component white-emitting phosphors are believed as new promising color conversion materials for white light-emitting diodes. As a potential candidate, Mn-doped lead halide perovskites are studied intensively, but rare works can realize pure white emission with a single component due to the challenge for realizing sufficient energy transfer efficiency from perovskite to Mn at the desirable emission wavelengths. In this work, we reported the synthesis of single-component white light halide perovskite quantum dots (QDs) by doping Mn into the host of CsPb(Cl/Br)3@CsPb(Cl/Br)x core–amorphous shell (CAS). The small size of zero-dimensional core in CAS structure has a strong quantum confinement effect, which can enhance the energy transfer efficiency from halide perovskite to Mn impurity dramatically. Our result shows 19.3 times higher energy transfer efficiency for Mn-doped CAS than that of ordinary Mn-doped CsPb(Cl/Br)3 nanocubes. As a result, as-prepared Mn-doped CAS QDs give rise to a white light emission with Commission Internationale de l’Eclairage (CIE) color coordinates of (0.37, 0.33). After blending with polystyrene (PS), Mn-doped CAS QDs can be used as a single-component color conversion material for assembling white light LEDs.

Critical Review—A Promising Cs3CoCl5 Prototype Phosphor toward the Discovery of Next-Generation LED Phosphor

To improve and identify next-generation solid-state lighting devices, there is an urgent need to discover new and highly efficient phosphor materials. Currently, the preparation of phosphor materials is considered to be an art rather than science and is based on finding crystal structures that can act as hosts for the activator ions. Thus far, there has been no systematic analysis on how to select host structures for given activator ions such that the synthesized phosphor is efficient. In this review, the general strategies for tuning and enhancing the photoluminescence properties of phosphor materials for white light-emitting diodes are discussed with respect to versatile host materials belonging to the Cs3CoCl5 family. Furthermore, we also discuss several important parameters for constructing the sort diagram for selecting efficient host materials.

High color rendering index and stable white light emitting diodes fabricated from lead bromide perovskites

The tunable wavelength and high photoluminescence quantum yield of metal halide perovskite quantum dots (QDs) make them an extraordinary material for white light-emitting diodes (WLEDs). However, when perovskites with different halides are mixed, anion exchange occurs between them, limiting the development of WLEDs based on the perovskite. Meanwhile, the red emitting perovskite containing iodine is not stable, which is also a problem to overcome. In this paper, only bromide perovskites were adopted to fabricate the WLED. Hence, the anion exchange reaction can be avoided during their mixing process. CsPbBr3 nanoplatelets, CsPbBr3 QDs, and Mn-doped PEA2PbBr4 nanosheets were used as the blue, green, and red components of the WLEDs, respectively. All these perovskites preserve high luminance and stability, especially the red emitting component. Thus, the WLED shows high efficiency and excellent stability. By adjusting the amounts of these perovskites, WLEDs with different color temperatures were achieved, and the color rendering index reached up to 94.

Enhancement of NaSrVO4:Dy3+-white-phosphor photoluminescence via La3+ co-doping

In this study, a series of white light-emitting NaSrVO4:Dy3+ phosphors with La3+ co-doping were produced by a combustion method. The configurations of the as-prepared NaSrVO4:Dy3+ and NaSrVO4:Dy3+, La3+ specimens are consistent with the standard phase of NaSrVO4. The impacts of the Dy3+ concentration and La3+ co-doping on the luminescence characteristics of NaSrVO4: Dy3+ phosphors were explored. The specimens excited by near-ultraviolet light displayed emission peaks at 580 (yellow) and 484 nm (blue), which were ascribed to the 4F9/2 → 6H13/2 and 4F9/2 → 6H15/2 transitions of the Dy3+ ions, respectively. The white light was manufactured by these two emissions from the NaSrVO4: Dy3+ phosphor. Photoluminescence studies demonstrated that the La3+ co-doping efficiently improved the luminescence characteristics of the NaSrVO4: Dy3+ phosphor. These results suggest that the NaSr0.9425VO4: 0.05Dy3+, 0.0075La3+ phosphors excited by near-ultraviolet are promising materials for white light-emitting diodes.

Synthesis and luminescence properties of orange–red phosphor Ba2ScNbO6:Sm3+

A series of orange–red light-emitting Sm3+ activated Ba2ScNbO6 (x = 0.03, 0.05, 0.08, 0.10, 0.12, 0.14, and 0.16) phosphors were prepared through a traditional high temperature solid-state method. The properties of the samples were characterized by X-ray diffraction and scanning electron microscope. The emission and excitation spectrum, concentration quenching mechanism, and fluorescence attenuation of the phosphors were also investigated in detail. Upon excitation with near-Ultraviolent (407 nm), the emission spectra are composed of 564 nm, 598 nm and 645 nm emission peaks, corresponding to the different transitions of Sm3+ ions 4G5/2 → 6HJ (J = 5/2, 7/2, and 9/2), respectively. The strongest emission at 598 nm comes from the 4G5/2 → 6H7/2 transition of Sm3+, which produces bright orange–red emission. The optimum doping concentration of Sm3+ ion in Ba2ScNbO6 is 8 mol% and the critical transfer distance (Rc) of Sm3+ was calculated to be 20.97A. The thermal stability of Ba2ScNbO6:Sm3+ phosphor was tested by temperature-dependent emission spectroscopy. In addition, the Commission International deL’Eclairage the chromaticity coordinate of Ba2ScNbO6:0.08Sm3+ phosphor is (0.5435, 0.4514), which located in the orange reddish region. All the results show that the Ba2ScNbO6:xSm3+ phosphors can be used as orange–red light-emitting material for white light-emitting diodes.