Emission Spectra Of Phosphors Research Articles

Optical thermometry based on different luminescence thermal responses of matrix and doped ions in CaMoO4: Sm3+ phosphors

In this experiment, Sm3+ doped CaMoO4 phosphors of scheelite structure with body-centered tetragonal phase were acquired via hydrothermal method, and the Sm3+ doping concentrations were 0.05 %, 0.1 %, 0.3 %, respectively. The temperature-dependent emission spectra of phosphors show that as the temperature rose from 303 K to 503 K, the luminescence intensity of MoO42− decreased all the time due to the thermal quenching, while the luminescence intensity of Sm3+ exhibited a new phenomenon of initial increase and then decrease. The reason for the above new situation is the combined effect of the enhanced energy transfer efficiency of MoO42− to Sm3+ with increasing temperature and the thermal quenching effect of Sm3+ luminescence. The FIR of Sm3+ and MoO42− can be utilized to represent the temperature and achieve optical temperature sensing with high relative sensitivity. The maximum relative sensitivity of CaMoO4: 0.3 %Sm3+ phosphor is 6.07 % K−1 at 303 K. In conclusion, CaMoO4: Sm3+ phosphor has great potential for development in temperature-sensitive materials.

Switchable circular polarized phosphorescence enabled by cholesteric assembled nanocelluloses

Circularly polarized room temperature phosphorescence (CP-RTP) has recently attracted great attention and is rapidly developing. To boost its potential applications in imaging, information encryption and optical detectors, high glum-factor and programmable chiroptical performance are needed. Herein, CP-RTP active materials were successfully constructed by infiltrating polycyclic aromatic hydrocarbon (naphthalene and pyrene) doped polymethyl methacrylate in cellulose nanocrystals (CNCs) films. It enabled a tunable glum-factor of up to −0.49 and an afterglow time of up to 8 s. Modulation of the matching degree of the photonic bandgap of CNCs films with the phosphor emission spectra allowed for achieving on-demand intensity, wavelength and handedness of CP-RTP and circularly polarized fluorescent (CP-FL) emission. Furthermore, dynamic tuning of the CP-RTP and CP-FL, including on/off, and positive/negative signal switching, was achieved through oxygen consumption by UV irradiation to reduce the effect of triplet oxygen quenching. The hybrid CNCs film demonstrated structural color, phosphorescence, and CP-RTP response, making it suitable for multiple channel information storage for anti-counterfeiting as a porotype. These findings show a range of prospective photonic applications, including information security, stereoscopic displays, and chiral polarizers.

Long Lasting Persistent Photo-Luminescence Properties of EuxM1-xMgAl10O17(M = Ba, Ca, Sr, Zn) Phosphors

In this work, the EuxM1-xMgAl10O17[M = Ba, Ca. Sr, Zn, and x = 0.05)] phosphors were prepared through a combustion route technique. The complexing reagents namely urea (fuels) were used to synthesis for EuxBa1-xMgAl10O17 (BAM: Eu), EuxCa1-xMgAl10O17 (CAM: Eu), EuxSr1-xMgAl10O17 (SAM:Eu), and EuxZn1-xMgAl10O17 (ZAM:Eu) phosphors. The crystallinity of the synthesized compound, elemental analysis and surface morphology were measured using the PXRD FE-SEM, and FTIR spectroscopy respectability. The average crystallite size (<Ds>) of BAM: Eu, CAM:Eu, SAM: Eu, and ZAM: Eu were found 80, 30, 29, and 26 nm respectively. The photoluminescence emission spectra of phosphor were found broadband by the monitoring using common excitation (350 nm) and emission (450 nm). The CIE-1931 color- coordinates were calculated for each sample in the blue region. The overall PL emission was found near the blue [BAM: Eu, SAM: Eu, and ZAM: Eu ] and blue-red [CAM:Eu] regions with high quantum efficiency and high color purity. Long-lasting PL decay was also recorded of samples with respect to all samples BAM:Eu was calculated from 0.46 to more than 40 min. Therefore, the BAM: Eu and other synthesized phosphors would be used as a blue-emitting phosphor in widely varying fields of lightings.

Ultra-broad Near-Infrared Emitting Phosphor LiInF4: Cr3+ with Extremely Weak Crystal Field.

Recent decades have witnessed a major development in broadband near-infrared (NIR)-emitting phosphors because of their potential applications in real-time nondestructive examination. These applications require the emission spectra of phosphors to be as broad as possible for efficient performance. Therefore, a blue-light excited LiInF4: Cr3+ phosphor with a NIR emission covering 700-1400 nm is successfully synthesized. Under 470 nm excitation, it shows broadband emission peaked at 980 nm with the full-width at half maximum of 210 nm. The structure and crystal field environment are investigated in detail, and the LiInF4: Cr3+ possesses a weak crystal field strength and strong electron-phonon coupling. An efficient NIR phosphor-converted light-emitting diode (pc-LED) is fabricated by the prepared LiInF4: Cr3+ phosphor and commercial blue diode chip, generating a NIR radiant flux of 5.54 mW at 150 mA drive current. Finally, the NIR pc-LED is successfully applied to identify the blood vessel distribution of the hand. This work suggests the potential of LiInF4: Cr3+ phosphor in applications.

Tuning emission color of Eu2+-activated phosphor through phase segregation

Different applications have diverse requirements on the luminescence performance of the phosphors. Therefore, tuning emission spectrum of phosphors is a perpetual topic. In this work, we utilize phase segregation to effectively adjust the emission spectrum of a Eu2+-activated phosphor system. The introduction of Ba2+ ions into K2Ca(PO4)F:Eu2+ (simplified as Ba-KCP:Eu2+) facilitates the emission spectral tuning, which results in the variation of emission color from red to cyan. Crystal structural and phase analyses indicate that the spectral tuning results from the gradual segregation of a second phase K2BaCa(PO4)2 and the transfer of Eu2+ from K2Ca(PO4)F to K2BaCa(PO4)2 phase upon increasing Ba2+ content. Phase segregation within a phosphor particle is beneficial to ensure the stability of devices’ performance when it is used to fabricate phosphor-converted light-emitting diodes (pc-LEDs). The composite phosphor Ba0.06-KCP:0.005Eu2+ exhibits white light emission with appropriate cyan and red-emitting component. The internal and external quantum efficiencies (QE) of the white-emitting Ba0.06-KCP:0.005Eu2+ phosphor are 90 and 54 %, respectively, close to other Ba-KCP:0.005Eu2+ samples. The PL intensity of the white-emitting Ba0.06-KCP:0.005Eu2+ at 150 °C is 89 % of that at room temperature. The luminous efficacy of the pc-LEDs based on 365 nm chip and the Ba-KCP:0.005Eu2+ phosphor can be as high as 73.9 lm/W. The performance of Ba-KCP:0.005Eu2+ based on phase segregation is superior to that based on the variation of crystallographic site for Eu2+ within K2Ca(PO4)F phase. The high QE values, excellent thermal stability, and the performance on pc-LEDs exhibit the potential application for the phosphors in plant growth and solid-state lighting.

Novel Dy incorporated Ca3Y2B4O12 phosphor: Insights into the structure, broadband emission, photoluminescence and cathodoluminescence characteristics

This study reports cathodoluminescence (CL) and photoluminescence (PL) properties of undoped borate Ca3Y2B4O12 and Ca3Y2B4O12:x Dy3+ (x = 0.5, 1, 2, 3, 5, and 7) synthesized by gel combustion method. Micro-X-Ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), CL and PL under electron beam and 359 nm pulse laser excitation, respectively were used to investigate characterization and luminescence studies of synthesized samples in the visible wavelength. As-prepared samples match the standard Ca3Y2BO4 phase that belongs to the orthorhombic system with space group Pnma (62) based on XRD results. Under electron beam excitation, this borate host shows a broad band emission from about 250 to 450 nm, peaked at 370 nm which is attributed to NBHOC. All as-prepared phosphors exhibited the characteristic PL and CL emissions of Dy3+ ions corresponding to 4F9/2→6HJ transitions when excited with laser at 359 nm. The CL emission spectra of phosphors were identical to those of the PL spectra. Concentration quenching occurred when the doping concentration was 1 mol% in both the CL and PL spectra. The underlying reason for the concentration quenching phenomena observed in the discrete orange-yellow emission peaked at 574 nm of Dy3+ ion-doped Ca3Y2B4O12 phosphor is also discussed. According to these data, we can infer that this new borate can be used as a yellow emitting phosphor in solid-state illumination.

A Highly Efficient Eu2+ Excited Phosphor with Luminescence Tunable in Visible Range and Its Applications for Plant Growth

AbstractA series of RbxK2−xCaPO4F:Eu2+ phosphors are synthesized using a high‐temperature solid‐phase method. An increase in the Rb+ concentration leads to the Eu2+‐excited phosphor emission spectra being shifted from red to cyan. Interestingly, the excitation spectrum does not exhibit any variations, which indicates the possibility of mixing the red (Rb0.2K1.8CaPO4F:Eu2+) and cyan (Rb2CaPO4F:Eu2+) phosphors for plant growth. This luminescence tuning is attributed to the substitution of K+ with Rb+, which produces an inferior crystal‐field splitting that increases the energy at the lowest 5d level, and enhances the rigidity of the crystal structure, which results in a gradual decrease in the Stokes shift and a consequent blue shift in the emission spectrum. Time‐resolved photoluminescence emission spectroscopy further confirms the occurrence of broadband emission owing to the occupation of multiple sites by Eu2+. Light‐emitting devices appropriate for plant growth are fabricated by mixing the two phosphors with a 380‐nm UV chip, and a light‐conversion film is prepared using the red phosphor and PDMS glue. The Chlorella‐based plant growth experiment reveals that the growth rate of Chlorella is 12.2% higher than that of the blank group, indicating the favorable effect of the light‐conversion film on plant growth.

Regulating anti-site defects in MgGa2O4:Mn4+ through Mg2+/Ge4+ doping to greatly enhance broadband red emission for plant cultivation

Abstract Non-rare-earth Mn4+-activated broadband emission deep-red phosphors are considered as the potential red emitter in indoor plant growth LEDs owing to that their emission peaks can well overlap with the absorption of plant pigments. Here, a series of Mg2+xGa4−2xGexO8:0.001Mn4+ (MGGO:0.001Mn4+) phosphors were synthesized by a traditional high-temperature solid-state reaction. Incorporation of Mg2+/Ge4+ resulted in decreased Mg/Ga anti-site at x = 0–0.5 and increased Mg/Ga anti-site at x = 0.5–0.7, which contributed to the expanded and the contractive lattice constant, respectively. Because Mn4+ ions occupy two kinds of octahedral sites, that are the sites near to [MgO6] and [GaO6] respectively, the phosphor exhibited asymmetric broadband emission from 600 to 800 nm with the maximum at 677 nm (4T2 → 4A2 transition of Mn4+). Besides, doping Mg2+/Ge4+ in MgGa2O4 significantly affects the symmetry of octahedra and thus yields an enhancement of the broadband emission for Mn4+ by 1.6 times. Moreover, the emission spectra of phosphors overlap well with the absorption spectra of plant pigments, indicating that MGGO:0.001Mn4+ phosphors have an application prospect for plant cultivation.

Tb3+ and Sm3+ co-doped CaWO4 white light phosphors for plant lamp synthesized via solid state method: Phase, photoluminescence and electronic structure

A series of CaWO4: Tb3+, Sm3+ phosphors was successfully synthesized via the facile high temperature solid state reaction method. The phase purity and effect of different valence doping on cell parameters were evaluated by XRD analysis. When the trivalent RE3+ replaces the divalent Ca2+, the local electric field is generated, which has obvious influence on the lattice. The excitation spectra show that Tb3+ and Sm3+ can be excited simultaneously in the co-doped phosphors. The emission spectra of phosphors show that white phosphors can be obtained by adjusting the doping ratio and there is an energy transfer from Tb3+ to Sm3+ in the co-doped phosphors. The electronic structures of phosphors were studied by the first principle calculations. The quantum efficiency, thermal dependence and comparison with the absorption spectra of the pigments show that CaWO4: 0.01 Tb3+, 0.01Sm3+ phosphor has potential applications in the fields of white LEDs and plant lamps.

Enhancement of luminescence properties of SrTiO3:Sm3+ nanophosphor by charge compensator Li+ ion

Abstract In the current article, strontium titanate (ST) phosphor material doped with 1–9 mol% samarium ion (Sm3+) is prepared by facile solution combustion route. Characterizations for the prepared sample was carried out via powder X-ray diffraction, scanning and transmission electron microscopy, ultraviolet visible and Fourier transform infrared spectroscopy. Photoluminescence (PL) emission and excitation spectra were studied to examine the luminescence property of ST: Sm3+ nanophosphor. The ST: Sm3+ phosphor emission spectra were credited to the intra 4f orbital transition from the 4G5/2 level to the 6HJ (J = 5/2, 7/2, and 9/2). The presence of co-doped Li+ ion nanophospor increases the emission intensity of orange-red emission to multiple times. The improvement in the intensity of emission is attributed to the neighborhood symmetry around the Sm3+ and expansion in the crystallattice. The mechanism of PL enhancement in ST: Sm3+ nanophosphor with Li+ ion co-doping is discussed in detail. The optimized concentration of Sm3+ ions chromaticity coordinates were determined to be x = 0.59, y = 0.4. This favors in warm orange-red light emissive display applications.

Effect of oxygen partial pressure on the phosphorescence of different lanthanide ion (Ln3+)-doped yttria-stabilised zirconia

In this study, the effect of oxygen partial pressure on phosphorescence was investigated for different lanthanide ion-doped (Ln = Eu, Dy, Sm, Er) yttria-stabilized zirconia (YSZ). Samples of YSZ powders doped with 1 mol% Ln3+ were prepared using the sol-gel method. A measurement system comprising a pressure and temperature calibration chamber, a 405 nm laser, a spectrometer, a photo-multiplier tube (PMT) and related optics was established. The phosphor emission spectra were measured first to verify the sample fabrication method. Then, the phosphorescence lifetime of the Ln3+-doped YSZ (YSZ:Ln) were obtained at different oxygen partial pressures and temperatures. These data showed that all the YSZ:Ln aside from the YSZ:Er exhibited a negative correlation between phosphorescence lifetime and oxygen partial pressure in high-temperature environments. The oxygen sensitivity was enhanced as temperature increased, and further analysis showed that this oxygen sensitivity was related to the energy levels of the phosphor‘s excited state and charge transfer state. That is, an excited state at a high energy level and a change transfer state at a low energy level would lead to oxygen sensitivity. These findings not only provide a useful reference for the evaluation of the oxygen effect on YSZ:Ln3+-based phosphor thermometry but may also serve as a basis for developing optical pressure sensors suitable for high-temperature environments.

An in-situ synthesized multiphase phosphor Mg0.6-xAl2Si1.8O7.2: xEu2+ with a broad emission spectrum and thermal anti-quenching property

In this work, we report an in-situ generated multiphase phosphor Mg0.6-xAl2Si1.8O7.2: xEu2+ (MASO: xEu), which has a broad cover-region emission spectrum and a thermal anti-quenching (TAQ) property. The full width at half-maximum (FWHM) of the emission spectrum of phosphor has been broadened from 78 nm to 163 nm. The spectrum broadening was ascribed to the generation of new co-existed phases and the proportion change of co-existed phases in the single-particle of phosphor. On the other hand, the emission intensity at ~ 496 nm increases by 12% with the environmental temperature increasing from 298 K to 473 K, which was corresponded to the shortened relaxation process of photo-excited electrons in the excited state of the activator Eu2+ and the energy transfer from electron-hole pairs at thermally activated defect levels to the 5d-band of Eu2+. Due to the broad emission spectrum and thermal anti-quenching properties, this multiphase MASO: xEu can be a potential candidate for NUV pc-WLEDs.

Electron beam exposure- structural immunity and color tuning in Al2O3–ZrO2:Dy3+ binary matrix prepared by a hybrid approach

This work report site selective emission of Dy3+ in ZrO2–Al2O3 binary system. Exposing these phosphors to electron beam irradiation tuned the emission color from blue to white, however crystalline and structural properties revealed by PXRD and TEM indicates the samples are immune to electron beam exposure. These phosphors were prepared by a hybrid approach, i.e. by combining solution combustion method and solid-state method. Nano particles of ZrO2 and Al2O3 were prepared by solution combustion method and then they were used as starting materials for solid state method. XRD analysis revealed presence of cubic-ZrO2 and α-Al2O3 phases in the prepared binary system. PL excitation spectra contained four peaks with maximum absorption intensity centered at 350 nm due to 6H15/2→6P7/2 transmission of Dy3+ ions. The emission spectra of phosphors excited at 350 nm show three characteristics peaks of Dy3+ centered at 485 nm (4F9/2→6H15/2), 580 nm (4F9/2→6H13/2) and 675 nm (4F9/2→ 6H11/2). Structural and photoluminescence properties were studied again, after exposing those phosphors to high energy electron beam. PL emission spectra were used to probe the hitherto unidentified changes. The asymmetry ratio (Ir) was analyzed in detail to study the fine information on the effect of electron exposure left unnoticed in XRD and TEM. Also, the Commission Internationale d'Eclairage color-coordinates revealed color tuning of the phosphors from blue to white, upon electron beam irradiation. This work reports Photoluminescence emission spectra as a probe to study the ultra-fine effects of electron beam irradiation in the materials.

Dual-mode luminescence: a new perspective in calcium molybdate phosphor for solar cell application

Herein, a dual mode luminescence behavior of rare earth doped/codoped CaMoO4:(Eu3+, Eu3+/Yb3+) phosphors synthesized by hydrothermal method are presented. The structural analysis and surface morphology were investigated by X-ray diffraction, field emission scanning electron microscopy and Fourier transform infrared spectroscopy techniques. The optical properties were studied through UV–vis diffuse reflectance spectroscopy, photoluminescence (PL) and lifetime measurements. The PL excitation spectra of Eu3+ doped CaMoO4 phosphors were recorded at different excitation wavelengths such as 250, 270, 300, 394 nm wavelengths. The down-shifting PL emission spectra of phosphors were recorded at optimized 250 nm excitation wavelength. In addition, emission was also recorded for Eu3+/Yb3+ codoped CaMoO4 phosphor after an excitation wavelength 980 nm through up-conversion process. The phosphors show hypersensitive red emission (5D0 → 7F2) through down-shifting as well as up-conversion processes. The red color was visualized by using commission international de L’Eclairage (CIE) chromaticity diagram. Thus, the obtained results show that dual-mode red emitting phosphors may be used as spectral converter in solar cells.

Synthesis, structural and luminescent properties of Eu2+/Dy3+ activated GdAlO3 phosphors by solid state reaction method under nitrogen atmosphere

Eu2+ and Dy3+ singly doped and codoped GdAlO3 phosphor was synthesized by solid state reaction method in a reducing atmosphere of nitrogen. Samples were characterized by powder X-ray diffraction (PXRD) analysis. The average crystal size was obtained around 68 nm. Surface morphology was verified by scanning electron microscopy (SEM) analysis. The emission spectra of phosphors singly doped with Eu2+ and codoped with Eu2+; Dy3+ respectively were recorded under 354 nm excitation. The emission spectra of Eu2+ has intense emission peak at 515 nm. It was observed that the after codoping with Eu2+ and Dy3+ the emission bands of Eu2+ dominates along with a new emission band centred at 419 nm. CIE chromaticity diagram shows variation in emitted colour with Eu2+, Dy3+ singly doped and codoped phosphor. The investigation of Dy3+ codoping shows the colour tunable behaviour of the phosphor. This colour tunable behaviour of the phosphor makes it useful in the colour display applications.

Solid-state fluorescence organic materials as a tool for spectral modification of ZnS-based screen-printed thick layer electroluminescence devices

This work is focused on modification of spectral characteristic of light emitted by alternating current powder-based ZnS electroluminescent device by addition of a color conversion material. A suitable diketopyrrolopyrrole (DPP) derivative with absorption spectrum compatible with emission spectrum of phosphor was found and was added into the printing formulation. Electroluminescent panel was printed by screen printing method and the influence of fluorophore was evaluated from the emission spectra of the electroluminescent device. Color space coordinates of emitted light of pure phosphor and phosphor modified by DPP were plotted into the CIE space for better visualization of the color change. It was found that the presence of fluorophore increased the value of measured quantity—absolute spectral irradiance—more than seven times at 587 nm which corresponds to the maximum of fluorescence emission of DPP. This approach provides useful tool to obtain colors of various wavelengths and therefore various hues without the need to look for new challenging and expensive chemical modifications of the phosphor.

The effect of Y3+ and Eu3+ on properties of Zn3V2O8 phosphor

In this paper, the (Zn1-xYx)3V2O8 and (Zn1-xEux)3V2O8 phosphors were successfully prepared by high temperature solid state method. The effect of the doping amount of Y3+ and Eu3+ on the luminescent properties of phosphors was discussed. The phase, surface morphology and luminescent properties of the phosphors were characterized by X ray diffraction (XRD), scanning electron microscopy (SEM) and photoluminescence (PL). The results show that the phosphor is the target product, the sample of the composite particles is bulky, the excitation spectral range of (Zn1-xYx)3V2O8 phosphors is 300-400nm, the excitation peak is at 361nm, and (Zn1-xYx)3V2O8 phosphor emission spectra in the range of 420-690nm, the emission peak in 559nm. The results show that the crystal structure of Zn3V2O8 and (Zn1-xEux)3V2O8 were the same, and the particle uniformity of (Zn1-xEux)3V2O8 was better than Zn3V2O8. The emission band Zn3V2O8 and (Zn1-xEux)3V2O8 were present at the wave length of 420-690 nm, the luminescence property of (Zn1-xEux)3V2O8 was enhance by Eu-doped.

Photoluminescence and cathodoluminescence properties of green–red emitting ZnGd4Si3O13: Tb3+, Mn2+ phosphors

The photoluminescence and cathodoluminescence properties of new silicate oxyapatite phosphors ZnGd4Si3O13: Tb3+, Mn2+ were investigated in this study. The Rietveld refinement indicated that the prepared phosphors exhibited a hexagonal structure with space group P63/m (no. 176). Under UV excitation, ZnGd4Si3O13: Mn2+ phosphors presented a red emission band due to the T1(4G)–6A1(6S) transition of Mn2+ ions, while ZnGd4Si3O13: Tb3+ showed several emission lines at 490, 544, 585 and 621 nm attributed to the 5D4→7FJ (J = 6, 5, 4, 3) transitions of Tb3+ ions. The co-doping of Tb3+ ions into ZnGd4Si3O13: Mn2+ resulted in a 100% enhancement of the photoluminescence intensity for Mn2+ ions through a dipole–dipole energy transfer mechanism. On the other hand, the energy transfer process from the sensitizers (Tb3+) to the activators (Mn2+) led to a decrease in Tb3+ emission as co-doping Mn2+ ions into ZnGd4Si3O13: Tb3+. Increasing the concentration of Mn2+ ions from x = 0.02 to x = 0.08 for Zn2−xMnxGd3TbSi3O13 efficiently enhanced the energy transfer efficiency from 90 to 98%. Under the electron-beam excitation, the emission spectra of phosphors were similar to those observed under UV excitation. However, a deviation of CIE coordinates was found under the electron-beam excitation due to the relatively unapparent energy transfer between Tb3+ and Mn2+ ions. The present results suggested a new series of color-tunable phosphors which can be used for both photoluminescence and cathodoluminescence applications.

The effect of co-doping ions on the luminescence properties and energy transfer of Ba1.8-3x/2-y-zZnzLi0.4SiO4:xCe3+,yMn2+ phosphors

The Ba1.8-3x/2-y-zZnzLi0.4SiO4:xCe3+,yMn2+ phosphors were obtained through one-step calcination process of precursors prepared by chemical co-precipitation method. Crystal phase, excitation and emission spectra of phosphors were analyzed via XRD and FL. The excitation spectra cover a range of 320–370nm with the peak at 350nm, thus, BZLS phosphors can be excitated by NUV light emitted by InGaN chip. Emission spectra of BZLS phosphors show two bands with the peaks located at 394nm and 605nm under 350nm excitation, which corresponds to 5d→4f transition of Ce3+ and 4T1→6A1 of Mn2+ respectively. The energy transfer process from Ce3+ to Mn2+ could be considered as dipole-dipole interaction mechanism. The intensity of red emission increases with the content of Zn2+ increasing, and rises to a maximum when z=0.2. While the intensity of blue-violet emission decreases with the content of Zn2+ increasing. The dependences of Ce3+ and Mn2+ on the luminescence properties are similar to that of Zn2+.

Enhance Luminescence of SrBPO5: Sm3+ Phosphor by Codoping Alkali Metal for White LEDs

An orange reddish phosphor SrBPO5:Sm was synthesized by the traditional solid-state method. The phosphor component was characterized by the X-ray powder diffraction (XRD). The photoluminescence excitation (PLE) and emission spectra (PL) were investigated. The influence of the concentration of Sm ions on luminescence properties of samples and concentration quenching mechanism were investigated. The results show that the as-prepared phosphor can be excited by 342 nm, 358 nm, 370 nm and 399 nm UV light and the strongest one at 399 nm. On being excited by 399 nm, the sample emits yellow, orange and red emission at different wavelength. The optimal activator molar fraction in this phosphor is 0.016 and the only sintering temperature is 1000°C. It is meant for enhancing the emission intensity of SrBPO5:Sm phosphor if appropriate Li ions are added as charge compensator. The thermal stability was evaluated by emission spectra of phosphor at different measuring temperatures. This research studied the influence of reaction temperature and charge compensator on the luminescence characteristics. The chromaticity coordinates of SrBPO5:Sm, R phosphor was explored. The results indicate that SrBPO5:Sm, Li is a potential orange-reddish phosphor in near UV based white LEDs.