380-nm Excitation Research Articles

Bioengineered dual fluorescent carbon nano dots from Indian long pepper leaves for multifaceted environmental and health utilities.

In this article, we present the synthesis of Piper longum leaves-derived ethanolic carbon dots (PLECDs) using the most simplistic environmentally friendly solvothermal carbonization method. The PLECDs fluoresced pink color with maximum emission at 670nm at 397nm excitation. Additionally, the dried PLECDs dissolved in water showed green fluorescence with higher emission at 452nm at 370nm excitation. The UV spectra showed peaks in the UV region (271.25nm and 320.79nm) and a noticeable tail in the visible region, signifying the efficient synthesis of nano-sized carbon particles and the Mie scattering effect. Various functional groups (-OH, -N-H, -C-H, -C = C, -C-N, and -C-O) were identified using Fourier transform infrared spectroscopy (FTIR). Its nanocrystalline property was revealed by the sharp peaks in the X-ray diffraction (XRD). High-resolution transmission electron microscopy (HRTEM) photomicrograph displayed a roughly spherical structure with a mean size of 2.835nm. The energy dispersive X-ray (EDAX) and X-ray photoelectron spectroscopy (XPS) revealed the elemental abundance of C, O, and N. The high-performance thin-layer chromatography (HPTLC) fingerprint of PLECDs showed an altered pattern than its precursor (Piper longum leaves ethanolic extract or PLLEE). The PLECDs sensed Cu2+ selectively with a limit of detection (LOD) and limit of quantification (LOQ) of 0.063μM and 0.193μM, respectively. It showed excellent cytotoxicity toward MDA-MB-231 (human breast cancer), SiHa (human cervical carcinoma), and B16F10 (murine melanoma) cell lines with excellent in vitro bioimaging outcomes. It also has free radical scavenging activity. The PLECDs also showed outstanding bacterial biocompatibility, pH-dependent fluorescence stability, photostability, physicochemical stability, and thermal stability.

Ho3+-Induced ZnO: Structural, Electron Density Distribution and Antibacterial Activity for Biomedical Application.

The current investigation focused on the synthesis and characterization of Zn1-xHoxO (X = 0, 0.02, 0.04, 0.06, and 0.08) materials. The rare-earth Ho3+-doped ZnO materials have been prepared using a chemical precipitation process. The phase pure hexagonal structured ZnO crystal system has been observed by powder X-ray diffraction (XRD) characterization. The detailed structural analysis of prepared materials has been investigated by the Rietveld refinement method. The surface morphology and elemental composition of the prepared materials have been characterized using scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDAX). The presence of vibrational links associated with various functional groups has been displayed by FTIR spectroscopy. The energy gap of synthesized materials has been studied using UV-Vis spectroscopy. To study the luminescence activity of produced materials, photoluminescence (PL) analysis has been utilized. The light-green emission at around 507nm has been obtained by synthesized materials under 380-nm excitation. In addition, the electron density distribution has been accomplished in synthesized materials. At 6% of Ho3+, substituted ZnO exposes the maximum covalent and ionic nature between Zn-O bond along with horizontal and vertical axis, respectively. Moreover, the antibacterial activity of synthesized materials has been done through Proteus vulgaris and Enterococcus faecalis. Following that the destruction of human red blood cells has been examined by hemolysis investigation. All experimental results suggested that the 6% of Ho3+ dopant is the optimized level of ZnO host lattice. The present work paves a promising path to get efficient material for biomedical applications.

Photoluminescence analysis of Er3+-ions Doped P2O5-Gd2O3/GdF3-BaO-ZnO glass systems

We develop two Er3+-ions-doped Phosphate glass systems, 69 P2O5-10Gd2O3-10BaO-10ZnO-1Er2O3 and 69 P2O5-10GdF3-10BaO-10ZnO-1Er2O3, labeled as ZBaFEr and ZBaOEr, respectively, by the melt-quenching technique and study systematically their physical, optical, and luminescence properties such as densities, refractive indexes, ultraviolet-visible near-infrared (UV-Vis-NIR) absorption, photoluminescence spectra in Vis-NIR region, CIE coordinates and lifetime. The absorption spectra revealed the Er3+ peaks at 378, 405, 451, 489, 522, 652, 803, 978, and 1537 nm, attributed to the transition from 4I15/2 level to 4G11/2, 2G9/2, 4F5/2, 4F7/2, 2H11/2, 4F9/2, 4I9/2, 4I11/2 and 4I13/2 levels, respectively. We find that at 380-nm excitation, the emission peak at 1543 nm in the near-infra-red (NIR) region has a higher intensity for ZBaFEr than for the ZBaOEr. Furthermore, we employ the Judd-Ofelt (JO) and McCumber theory to study the stimulated emission cross-section for 4I13/2→4 I15/2 transitions of Er3+ ion. We find the bandwidth-quality [FWHM x σemi(λ)] to be 249 and 274 for ZBaOEr and ZBaFEr, respectively. The NIR-emission for both glasses covers the S-, C- and L-band of low-less-communication-window. The present results suggest that these glasses can be potentially used in optical amplifiers and tunable lasers.

A ratiometric fluorometric ciprofloxacin assay based on the use of riboflavin and carbon dots.

Carbon dots (CDs) were hydrothermally synthesized from selenious yeast. They were further coupled with riboflavin to form a dually emitting probe for ciprofloxacin (CIP). Under 370nm excitation, the probe displays dual (blue and green) emissions with peaks at 443 and 510nm. When CIP is added, the blue fluorescence of the CDs is enhanced while the green fluorescence remains unaffected. The ratio of the relative fluorescence intensities at 443 and 510nm increases linearly in the 0.5-200μM CIP concentration range. The fluorescent probe is selective and has a 0.13μM detection limit. Satisfactory recoveries (97.9-101.1%) were received when the probe was used to quantify CIP in spiked water and human serum samples. Graphical abstractBlue-emissive carbon dots were prepared from selenious yeast via a hydrothermal method, and then coupled with riboflavin as a ratiometric fluorometric probe for ciprofloxacin determination.

A carbon dot-based ratiometric fluorometric and colorimetric method for determination of ascorbic acid and of the activity of ascorbic acid oxidase.

A dual-mode method was developed for the determination of ascorbic acid (AA) and of ascorbic acid oxidase (AA-Ox) activity. It combines the advantages of ratiometric fluorometry and colorimetry. The assay is based on the oxidation of o-phenylenediamine (OPDA) by permanganate (KMnO4). A yellow substance (referred to as oxOPDA) with an absorption peak at 425nm is rapidly produced in the presence of the oxidant. oxOPDA reduces the blue fluorescence of carbon dots (C-dots) peaking at 450nm (upon 380-nm excitation), and a new emission peak is found at 565nm. If AA is pesent, it consumes acertain fraction of KMnO4, so that less OPDA will be oxidized. This is accompanied by a decrease in the intensity of the fluorescence at 565nm and an increase in the intensity at 450nm. In parallel, the color of the solution changes from yellow to colorless. The determination of the activity of ascorbic acid oxidase (AA-Ox) is performed as follows: AA is oxidized by AA-Ox. This causes the fluorescence and colors to change in the opposite directions compared with AA detection. The ratio of fluorescences (I565/I450) becomes larger if the color the solution turns from colorless to yellow. Thus, the fluorescence intensity ratio (I565/I450) and colorimetric "bare-eye" readout can be used for determination of both the concentration of AA and the activity of AA-Ox. The fluorometric assay for AA has a linear range that extends from 0.6 to 40μM, and the colorimetric assay from 0.2 to 70μM. The respective data for AA-Ox activity are 0.04 ~ 5mU·mL-1 and 0.04 ~ 8mU·mL-1, respectively. The limits of detection for AA are 9 and 40nM, and the LODs for AA-Ox activity are 0.017 and 0.012mU·mL-1. Graphical abstract Schematic presentation of the assay. Permanganate (KMnO4) rapidly oxidizes ortho-phenylenediamine oxide to form a product (oxOPDA) having a yellow fluorescence peaking at 565 nm. The yellow color of oxOPDA can be detected visually. It also reduces the intensity of the blue fluorescence of carbon dots (C-dots) peaking at 450 nm. Ascorbic acid (AA) can consume permanganate, and this results less oxidation of OPDA. Ascorbic acid oxidase (AA-Ox) catalyzes the oxidization of AA by oxygen, and this - in turn - causes the changes in absorbance and fluorescence to change in the opposite directions.

Luminescence and energy transfer of a color tunable Tb3+ and Eu3+ co-doped Mg0.5Ti2(PO4)3 phosphor

The Mg0.5-x-yTi2(PO4)3:xTb3+, yEu3+ phosphors were synthesized by solid-state reaction method. The photoluminescence excitation spectra and the luminescence emission spectra of Tb3+/Eu3+ single doped and co-doped Mg0.5Ti2(PO4)3 phosphors have been measured. The energy transfer from Tb3+ to Eu3+ was proved by emission spectra, excitation spectra and decay curves. The emission colors of Mg0.5-x-yTi2(PO4)3:xTb3+, yEu3+ phosphors under 380nm excitation are located at purple areas, purplish areas, pink areas and reddish orange areas. The results of color coordinates show that the color-tunable luminescence can be realized by adjusting the concentrations of Tb3+ and Eu3+ ions. The experiment presents that single-component Mg0.5-x-yTi2(PO4)3:xTb3+, yEu3+ phosphors are promising for application in the luminescence.

Enhanced photoluminescence of the Ca0.8 Zn0.2 TiO3 :0.05% Pr3+ phosphor by optimized hydrothermal conditions.

The red-emitting phosphor Ca0.8 Zn0.2 TiO3 :Pr3+ was synthesized using an ethylene glycol (EG)-assisted hydrothermal method. The effects of additional amounts of and order of adding EG, plus hydrothermal temperature, time, and pH on the composition, morphology and optical properties of the titanate phosphors were studied. The crystalline phases of the titanate phosphors were confirmed to be constituted of a series of co-existing CaTiO3 , Zn2 TiO4 and Ca2 Zn4 Ti16 O38 compounds in various proportions that were visualized using an X-ray diffractometer (XRD). The optical properties of the phosphors were studied using photoluminescence spectra and UV-visible spectroscopy. The results show that the impurities Zn2 TiO4 :Pr3+ and Ca2 Zn4 Ti16 O38 :Pr3+ significantly contributed to the enhancement of an absorption band around 380nm. The optimum Ca0.8 Zn0.2 TiO3 :Pr3+ phosphor consisting of appropriate amounts of CaTiO3 , Ca2 Zn4 Ti16 O38 and Zn2 TiO4 in three phases was achieved by controlling the hydrothermal conditions, and the obtained red phosphor exhibited the highest red emission (1 D2 →3 H4 transition of Pr3+ ) with an ideal chromaticity coordinate located at (x=0.667, y=0.332) under 380nm excitation.

Synthesis and photoluminescence properties of oxynitride phosphors M0.98Si2O2N2: [formula omitted] (M=Ba, Sr, Ca) using the cellulose assisted liquid phase precursor process

Oxynitride phosphors M0.98Si2O2N2: Eu0.022+ (M=Ba, Sr, Ca) for white LEDs were synthesized at 1300, 1400, and 1500°C by using the partially cellulose assisted liquid phase precursor (PLPP) process and compared with solid state reaction (SSR) process. MSi2O2N2 (M=Ba, Sr, Ca) crystal structure was obtained from M0.98Si2O2N2: Eu0.022+ phosphor fired at 1400°C using the PLPP process. However these phosphors were not synthesized through the SSR process at same temperature. M0.98Si2O2N2: Eu0.022+ (M=Ba, Sr, Ca) phosphors from PLPP produced a blue color emission at 487nm (380nm excitation), a green color emission at 528nm (374nm excitation), and a yellow color emission at 538nm (371nm excitation). M0.98Si2O2N2: Eu0.022+ phosphors from PLPP had higher luminescence and crystallinity compared with those obtained from the SSR process. The prepared phosphors were analyzed by X-ray diffraction (XRD), photoluminescence (PL) and field-emission scanning electron microscopy (FE-SEM).

Photoluminescence behaviour of Gd2SiO5 phosphor

The present paper reports the preparation of Gd2SiO5 phosphor by using solid state reaction method. The prepared phosphor was characterized by using X-ray diffraction method, and scanning electron microscopic (SEM) analysis. The prepared phosphor has particle size in nanometer range. In optical behaviour, the photoluminescence behaviour was studied on well crystallized Gd2SiO5 prepared by solid state reaction method. The prepared phosphor gives emission in visible region under 254nm excitation.

Red-emitting manganese-doped aluminum nitride phosphor

We report high efficiency luminescence with a manganese-doped aluminum nitride red-emitting phosphor under 254nm excitation, as well as its excellent lumen maintenance in fluorescent lamp conditions, making it a candidate replacement for the widely deployed europium-doped yttria red phosphor. Solid-state reaction of aluminum nitride powders with manganese metal at 1900°C, 10atmN2 in a reducing environment results in nitrogen deficiency, as revealed diffuse reflectance spectra. When these powders are subsequently annealed in flowing nitrogen at 1650°C, higher nitrogen content is recovered, resulting in white powders. Silicon was added to samples as an oxygen getter to improve emission efficiency. NEXAFS spectra and DFT calculations indicate that the Mn dopant is divalent. From DFT calculations, the UV absorption band is proposed to be due to an aluminum vacancy coupled with oxygen impurity dopants, and Mn2+ is assumed to be closely associated with this site. In contrast with some previous reports, we find that the highest quantum efficiency with 254nm excitation (Q.E.=0.86±0.14) is obtained in aluminum nitride with a low manganese doping level of 0.06mol.%. The principal Mn2+ decay of 1.25ms is assigned to non-interacting Mn sites, while additional components in the microsecond range appear with higher Mn doping, consistent with Mn clustering and resultant exchange coupling. Slower components are present in samples with low Mn doping, as well as strong afterglow, assigned to trapping on shallow traps followed by detrapping and subsequent trapping on Mn.

The investigation on the relationship between the R/O ratio of Eu3+ in orthophosphates and the excitation wavelengths

Orthophosphates doped with Eu3+ were widely investigated for their excellent photoluminescence properties for lighting and displays applications. In this work, we successfully synthesized orthophosphates K3La1−x(PO4)2:xEu3+ (x=0.03, 0.06, 0.09), K3Gd1−y(PO4)2:yEu3+ (y=0.03, 0.06, 0.09), Gd1−mPO4:mEu3+ (m=0.03, 0.06, 0.09) and studied their excitation and emission spectra. The obtained emission spectra of K3La1−x(PO4)2:xEu3+ (x=0.03, 0.06, 0.09) showed that the integrated intensity ratios of 5D0→7F2/5D0→7F1 of Eu3+ were similar under 393nm and 147nm excitation, and higher than that under 254nm excitation. The similar phenomena were observed in K3Gd1−y(PO4)2:yEu3+ (y=0.03, 0.06, 0.09) and Gd1−mPO4:mEu3+ (m=0.03, 0.06, 0.09). We interpreted this phenomenon based on the theory of energy transfer.

CoFe2O4 nano-particles functionalized with 8-hydroxyquinoline for dispersive solid-phase micro-extraction and direct fluorometric monitoring of aluminum in human serum and water samples

A simple dispersive solid-phase micro-extraction method based on CoFe2O4 nano-particles (NPs) functionalized with 8-hydroxyquinoline (8-HQ) with the aid of sodium dodecyl sulfate (SDS) was developed for separation of Al(III) ions from aqueous solutions. Al(III) ions are separated at pH 7 via complex formation with 8-HQ using the functionalized CoFe2O4 nano-particles sol solution as a dispersed solid-phase extractor. The separated analyte is directly quantified by a spectrofluorometric method at 370nm excitation and 506nm emission wavelengths. A comparison of the fluorescence of Al(III)–8-HQ complex in bulk solution and that of Al(III) ion interacted with 8-HQ/SDS/CoFe2O4 NPs revealed a nearly 5-fold improvement in intensity. The experimental factors influencing the separation and in situ monitoring of the analyte were optimized. Under these conditions, the calibration graph was linear in the range of 0.1–300ngmL−1 with a correlation coefficient of 0.9986. The limit of detection and limit of quantification were 0.03ngmL−1 and 0.10ngmL−1, respectively. The inter-day and intra-day relative standard deviations for six replicate determinations of 150ngmL−1 Al(III) ion were 2.8% and 1.7%, respectively. The method was successfully applied to direct determine Al(III) ion in various human serum and water samples.

Photoluminescent and photocatalytic properties of bismuth doped strontium aluminates blended with titanium dioxide

Bismuth co-doped long persistent phosphor (LPP) powders were obtained by a combustion synthesis technique followed by a post-annealing under carbon atmosphere. Bismuth content was varied from 1.0 to 15.0mol%. X-ray diffraction analysis revealed that the powders show mainly a mixture of three phases: the SrAl2O4, the SrAl14O25 and the Sr2Al6O11 crystalline phases. Photocatalyst composites were obtained by wet mixing of TiO2 anatase and LPP powders followed by annealing in air at 450°C. Photoluminescence measured spectra under 380nm excitation show a tunable emission from green (510nm) to greenish-blue (463nm) in which peak wavelength localization is related to the Bi content. Photoluminescence intensity decreases as Bi content increases. Degradation of methylene blue solutions, irradiated by UV light (254nm), was monitored by the decrease of its 650nm absorption peak in regular periods. The best photocatalytic activity is observed when in the composite blend a 2.0mol% of Bi content was used, and complete methylene degradation is reached after 210min. These photocatalyst composite powders are potential candidates to clean-up wastewater applications, and might be potential candidates for photocatalytic hydrogen generation in aqueous solutions.

Luminescence properties and energy transfer of Ba2Mg(PO4)2:Eu2+, Mn2+ phosphor synthesized by co-precipitation method

The Ba2Mg(PO4)2:Eu2+, Mn2+ phosphor is synthesized by a co-precipitation method. Crystal phase, morphology, excitation and emission spectra of sample phosphors are analyzed by XRD, SEM and FL, respectively. The results indicate particles synthesized by a co-precipitation method have a smaller size in diameter than that synthesized by conventional solid-state reaction method. Emission spectra of BMP:Eu2+, Mn2+ phosphor show a broad blue and a broad yellow emission bands with two peaks at about 456nm and 575nm under 380nm excitation. An overlap between Eu2+ emission band and Mn2+ excitation band proves the existence of energy transfer from Eu2+ to Mn2+. Emitting color of the BMP:Eu2+, Mn2+ phosphor could be tuned by adjusting relative contents of Eu2+ and Mn2+ owing to energy transfer formula. Therefore, BMP:Eu2+, Mn2+ may be considered as a potential candidate for phosphor for near-UV white LED.

Synthesis and photoluminescence of Ca<sub>3</sub>Si<sub>3</sub>O<sub>8</sub>F<sub>2</sub>: Ce<sup>4+</sup>, Eu<sup>3+</sup>, T<sup>b3+</sup> phosphor

Ce4+, Eu3+, Tb3+ co-doped Ca3Si3O8F2 phosphor was synthesized via solid state reaction method using CaF2, CaCO3 and SiO2 as raw materials for the host and Eu2O3, CeO2, and Tb4O7 as activators. The luminescent properties of the phosphor was analysed by spectrofluorophotometer at room temperature. The effect of excitation wavelengths on the luminescent properties of the phosphor i.e. under near-ultraviolet (nUV) and visible excitations was investigated. The emission peaks of Ce4+, Eu3+, Tb3+ co-doped Ca3Si3O8F2 phosphor lays at 480(blue band), 550(green band) and 611nm (red band) under 380nm excitation wavelength, attributed to the Ce4+ ion, Tb3+ ion and Eu3+ ions respectively. The results reveal that the phosphor emits white light upon nUV (380nm) / visible (465nm) illumination, and a red light upon 395nm / 535nm illumination. RE ions doped Ca3Si3O8F2 is a promising white light phosphor for LEDs. The emission colours can be seen using Commission international de l

Photoluminescence and thermoluminescence behavior of Gd doped Y2O3 phosphor

The present paper reports the synthesis and characterization photoluminescence and thermoluminescence studies of Gd3+ doped Y2O3 phosphors. The effect of variable concentration of europium on photoluminescence (PL) and thermoluminescence (TL) behavior are also studied. The samples were prepared by solid state synthesis technique which is suitable for large scale production of phosphors. The starting materials used for sample preparation are ZrO2 and Gd2O3 and CaF2 used as a flux. The prepared sample was characterized by X-ray diffraction technique (XRD). The surface morphology of prepared phosphor was determined by field emission gun scanning electron microscopy (FEGSEM) technique. The diffraction pattern was measured by transmission electron microscopy (TEM) with selected area diffraction pattern. All prepared phosphor with variable concentration of Gd3+ (0.2–2mol%) was studied by photoluminescence analysis it is found that the excitation spectra of prepared phosphor shows broad excitation centered at 249 and 254nm with few shoulder weak peaks at 275, 308 and 315nm. The excitation spectra with variable concentration of Gd3+ show strong peaks at 613nm for 254nm excitation. For 275nm excitation strong peaks found at 468, 567, 578 and 608nm. For recording TL glow curve every time 2mg phosphor was irradiated by UV 254nm source and fixed the heating rate at 6.7°Cs−1. Sample shows well resolved peak at 97°C for 2mol% of Gd3+. Trapping parameters are calculated for every recorded glow curve.

Optical and structural properties of lithium sodium borate glasses doped Dy3+ ions

Absorption and emission spectra of lithium sodium borate glass doped with different concentrations of Dy3+ have been reported. The concentration of Dy3+ was varied from 0.3 to 1.3mol%. The amorphous nature of the prepared samples was confirmed by the X-ray Diffraction (XRD). Fourier transforms infrared (FTIR) spectra, and other significant physical properties (energy band gap, density, ion concentration, molar volume, Polaron radius and inter-nuclear distance) have been analyzed in the light of the different oxidation states of the co-dopant ions. The absorption spectrum showed nine peaks with hypersensitive transition corresponding to 6F11/2+6H9/2 at 1256nm. As a result of 380nm excitation wavelength, the luminescence spectra showed two characteristic bands at 479nm and 587nm. These absorption bands were attributed to 6P15/2→6H15/2 and 6P15/2→6H13/2 transitions of trivalent Dy3+ ions. The current study indicates that Dy doped lithium sodium borate glasses are attractive for solid-state laser applications.

Enhanced Photoluminescence of Mn2+ + Tb3+ Ions Doped Peo+pvp Blended Polymer Films

Polymer blended films of PEO+PVP and singly doped and co-doped with Mn2+ and Tb3+ ions have been synthesized by solution casting method. Structural, thermal and optical properties of these films have been carried out. Thermal stability of these films has been investigated based on the measurement of TG-DTA profiles. Raman analysis demonstrates the complex formation of the polymer with the dopant ions. The optical absoption spectra of Mn2+ and Tb3+ seperately doped polymers exhibits characteristic bands in octahedral symmetry. From the emission spectrum, two emission bands at 510nm (green) and 614nm (red) are attributed to the T1 A1, and A1 A1 transition of Mn 2+:PEO+PVP polymer films under 370nm excitation. In Tb3+ doped PEO+PVP polymer samples exhibit green emission at 546 nm (green) due to a transition of (D4 F5) under 370nm excitation. The enhanced red emission at 614nm of Mn 2+ ions is attributed to an effective energy transfer of Tb3+ Mn2+ ions in the co-doped blended polymer film, which has been evidenced from the measurement of luminescence spectra and emission decay dynamics. These polymeric materials are suggested as bright visible colour luminescent materials.

Luminescence studies and EPR investigation of solution combustion derived Eu doped ZnO

ZnO:Eu (0.1mol%) nanopowders have been synthesized by auto ignition based low temperature solution combustion method. Powder X-ray diffraction (PXRD) patterns confirm the nanosized particles which exhibit hexagonal wurtzite structure. The crystallite size estimated from Scherrer’s formula was found to be in the range 35–39nm. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) studies reveal particles are agglomerated with quasi-hexagonal morphology. A blue shift of absorption edge with increase in band gap is observed for Eu doped ZnO samples. Upon 254nm excitation, ZnO:Eu nanopowders show peaks in regions blue (420–484nm), green (528nm) and red (600nm) which corresponds to both Eu2+ and Eu3+ ions. The electron paramagnetic resonance (EPR) spectrum exhibits a broad resonance signal at g=4.195 which is attributed to Eu2+ ions. Further, EPR and thermoluminescence (TL) studies reveal presence of native defects in this phosphor. Using TL glow peaks the trap parameters have been evaluated and discussed.

Cerium-, terbium- and europium-activated CaScAlSiO6 as a full-color emitting phosphor

We reported a single-phased CaScAlSiO6:Ce3+, Tb3+, Eu3+ as a potential full-color emitting phosphor for the application in fluorescent lamps. The CaScAlSiO6:Ce3+, Tb3+, Eu3+ phosphor exhibits three bands under 254nm excitation: one band situated at 380nm is attributed to the 5d→4f transitions of Ce3+ ions, the second band with sharp lines peaked at 542nm is assigned to the 5D4→7FJ transitions of Tb3+ ions, the third band in the orange–red region (580–700nm) is originated from 5D0→7FJ transitions of Eu3+ ions. The Commission Internationale de I’Eclairage (CIE) chromaticity coordinates (0.30, 0.30) and high color rendering index (CRI=88) can be achieved upon excitation of 254nm light. It is suggested that CaScAlSiO6:Ce3+, Tb3+, Eu3+ can serve as a potential single-phased full-color emitting phosphor for phosphor-converted fluorescent lamps.