White Light Region Research Articles

Characterizations of Pr3+ Ion-Doped LaVO4 Phosphor Prepared Using a Sol–Gel Method

The luminescent properties of Pr3+ ion-doped LaVO4 phosphor synthesized by the sol–gel method were investigated. The x-ray powder diffractometry results shows that the crystal structure of LaVO4 doped with Pr3+ phosphor calcined at 950°C for 6 h can be attributed to the monoclinic structure of LaVO4. There are no obvious differences for surface morphologies of La1−xPrxVO4 phosphors from the SEM results. For Pr3+ ion-doped LaVO4 phosphor, the O2− and V5+ charge transfer for the VO43− internal anion overlaps the 4f–5d characteristics transition of Pr3+ ion at the absorption band of 315 nm. There are some emission bands that exist in the emission spectra, which are attributed to the 3P0 → 3H4,5,6, 1D2 → 3H4, and 3P0 → 3F2 electron transition of the Pr3+ ion under an excitation wavelength of 315 nm. However, the intensity of emission peak at 607 nm is stronger than that of 489 nm when the Pr3+ concentration is less than 2 mol.%. The Commission Internationale de I’Edairage (CIE) chromaticity coordinates from an orange-red shift to a white light region and then shift to a light-green region.

High temperature synthesis of yellow-emitting Y2BaAl4SiO12:Ce3+ phosphors for WLED applications

Yellow-emitting Y2BaAl4SiO12:Ce3+ (YBAS:Ce3+) phosphors were synthesized by a sol-gel method followed by annealing at high temperature. The phase purity of the YBAS:Ce3+ phosphors was confirmed by X-ray diffraction analysis. The emission characteristics of YBAS:Ce3+ phosphors were investigated by measuring their photoluminescence excitation and emission spectra. These phosphors can be efficiently excited with blue light that induced an intense yellow emission peak centered at 530 nm. White light-emitting diodes (WLEDs) were fabricated using the synthesized YBAS:6Ce3+ phosphors. The CIE chromaticity coordinates of YBAS:6Ce3+ and the fabricated WLEDs were located at the yellow (0.391, 0.563) and cool white-light (0.265, 0.326) regions, respectively.

Full Color Luminescence Tuning in Bi3+/Eu3+-Doped LiCa3MgV3O12 Garnet Phosphors Based on Local Lattice Distortion and Multiple Energy Transfers.

In the pursuit of high-quality W-LED lighting, the precise control of emission color of phosphor materials is indispensable. Herein we report a series of single-composition Bi3+-doped LiCa3MgV3O12 garnet-structure phosphors, whose emission colors under n-UV excitation could be tuned from bluish green (480 nm) to yellow (562 nm) on the basis of local lattice distortion and VO43- → Bi3+ energy transfer. Furthermore, full-color luminescence tuning from bluish green to orangish red across the warm white light region was successfully achieved by designing VO43- → Bi3+ → Eu3+ energy transfers. More interestingly, the thermal stabilities of as-prepared samples were gradually enhanced through designing VO43-/Bi3+ → Eu3+ energy transfers. This work provides a new perspective for color tuning originating from simultaneous local lattice distortion and multiple energy transfers.

Impact of crystal defect on upconverted white-light emission in lanthanide-doped LiNbO3 single crystal

Efficient and stable upconversion white-light is critical for optical applications. Herein, LiNbO3:Ho/Yb/Tm single crystals with different [Li]/[Nb] ratios were grown by Czochralski method. It is found that the crystal structures are not changed with [Li]/[Nb] ratios which varied from 0.946 to 0.991 in the single crystals. The RE ion concentrations are reduced faintly and crystal structures approach perfect with increasing the [Li]/[Nb] ratios. More ideal upconversion white-light is obtained when the [Li]/[Nb] ratio is close to 1. The integrated effects of intrinsic defect concentrations and RE ion concentrations affect the upconversion emission intensity of the single crystal. The lower crystal defect in the bulk single crystal has a positive impact on the enhancement of upconversion emission intensity. In addition, all the CIE coordinates are hardly changed with [Li]/[Nb] ratios and located in the white-light region. The upconversion mechanism analysis indicates the longer lifetimes of intermediate energy levels and the shorter lifetimes of luminous energy levels are beneficial to the upconversion process, and the larger intensity variation of upconversion emission arises from its greater lifetime variations of energy levels. The near-stoichiometric LiNbO3:Ho/Yb/Tm single crystal demonstrates potential applications in stable white-light devices and photoelectric instruments.

Tunable color emitting of Ba1-x-ySiO3:xEu,yBi3+ phosphors with the self-reduction of Eu3+ ions calcined in air

A series of Ba1-xSiO3:xEu and Ba0.92-ySiO3:0.08Eu, yBi3+ phosphors have been synthesized using one-step calcination of a precursor prepared by chemical co-precipitation. The self-reduction phenomenon of Eu3+ is observed and verified by photoluminescence (PL), excitation (PLE) spectra and X-ray photoelectron spectroscopy (XPS). Under 353 nm excitation, the Ba1-x-ySiO3:xEu,yBi3+ phosphors exhibit a broad band ranging from 390 nm to 560 nm with a peak centered at 499 nm originating from the 4f65d→4f7 transition of Eu2+ ions and several narrow band emissions peaked at 464 nm, 537 nm, 581 nm, 590 nm, 615 nm, 660 nm and 705 nm can be attributed to 5D2→7F0, 5D1→7F1, 5D0→7F0, 5D0→7F1, 5D0→7F2, 5D0→7F3 and 5D0→7F4 transition of Eu3+, respectively. The self-reduction of Eu3+→Eu2+ in BaSiO3:Eu calcined in air has been explained from the following aspects: the charge compensation mechanism and the structures of 3-D networks composed by SiO4 tetrahedra, helpful for maintaining of the reduction (Eu3+→Eu2+) at a high temperature. Co-doping Bi3+ ions can both enhance the emissions from Eu2+ and Eu3+ because the doped Bi3+ ions not only can make vacancy for Eu2+ but also can enhance the emitting for Eu3+ in BaSiO3. Moreover, when excited by 370 nm, the CIE chromaticity coordinates of Ba0.92SiO3:0.08Eu and Ba0.912SiO3:0.08Eu,0.008Bi3+ are (0.3521, 0.3141) and (0.3558, 0.3408), meanwhile their correlated color temperature (CCT) are 4478 K and 4523 K, which belongs to the warm white light region. Furthermore, the decay curves are measured and can be well fitted with double exponential decay equation. It shows that both the average lifetimes of Eu2+ and Eu3+ are extended with the concentration of Bi3+ ions increasing. Therefore, the Ba1-x-ySiO3:xEu,yBi3+ phosphor is a promising warm white‐light emitting diodes (w-LEDs) integrated with NUV chips.

Crystal structure and luminescence property of a single-phase white light emission phosphor Sr3YNa(PO4)3F:Dy3+

A series of single-phase Sr3YNa(PO4)3F:Dy3+ phosphors were successfully synthesized via a conventional solid state reaction process. The powder X-ray diffraction patterns were utilized to confirm the phase composite and crystal structure. The phosphor could be excited by the ultraviolet visible light in the region from 300 to 420 nm, and it shown two dominant emission bands peaking at 484 nm (blue light) and 580 nm (yellow light) which originated from the transitions of 4F9/2→6H15/2 and 4F9/2→6H13/2 of Dy3+, respectively. The optimum dopant concentration of Dy3+ ions was confirmed to be 7 mol% in Sr3YNa(PO4)3F:Dy3+ system and the concentration quenching mechanism is dipole–dipole interaction. The lifetime values of Dy3+ ions at different concentrations (x = 0.03, 0.05, 0.07, 0.09 and 0.11) were determined to be about 0.855, 0.759, 0.686, 0.606 and 0.546 ms, respectively. The thermal stability of luminescence of Sr3YNa(PO4)3F:0.07Dy3+ phosphor was also investigated and the activated energy was deduced to be 0.228 eV, which shows good thermal stability. The chromaticity coordinates fall in the white-light region calculated by the emission spectrum. These results show that Sr3YNa(PO4)3F:Dy3+ phosphor can be a promising white emitting phosphor for white LEDs.

Preparation and Luminescence Properties of Ca9NaZn(PO4)7:Dy3+ Single-Phase White Light-Emitting Phosphor

Dy3+-doped Ca9NaZn(PO4)7 has been synthesized by high-temperature solid-state reaction. X-ray diffraction analysis revealed that the obtained phosphors existed as single phase. Doping with Dy3+ at low concentration had no obvious effect on the crystal structure of the host. Dy3+-doped samples showed strong emission at approximately 480 nm and 571 nm under excitation at 350 nm. The blue and yellow emissions showed almost the peak intensity. The combination of blue and yellow light formed white light. The color coordinates (0.323, 0.372) of the composite light are located in the white light region. The optimum doping concentration of Dy3+ ions was experimentally determined to be 10 mol.%. The concentration quenching mechanism was ascertained to be electric dipole–dipole interaction among Dy3+ ions. The obtained phosphors exhibited good thermal stability. These results indicate potential applications as single-phase white light-emitting phosphors.

Synthesis and luminescence properties of Tb3+ and Dy3+ doped Li7La3Hf2O12 with tetragonal garnet structure

A promising series of phosphors based on Li7La3Hf2O12:xLn3+ (Ln = Tb, Dy) has been prepared using a conventional solid state reaction and their luminescence properties have been investigated. The powder X-ray diffraction patterns show that Li7(La1-xLnx)3Hf2O12 (Ln = Tb, Dy) solid solutions crystallize in the tetragonal space group I41/acd, Z = 8. The photoluminescence spectra of Tb3+ doped Li7La3Hf2O12 contain well-known blue-green emission lines due to the 5D4→7FJ (J = 3–6) transitions of Tb3+. At relatively low activator concentrations, the blue emissions from the 5D3 level are observed along with emissions from the 5D4 level. The intensity ratio between the emission levels of 5D3 and 5D4 depends significantly on the terbium content, which makes it possible to obtain a tunable emission from green to yellowish green color. Under UV excitation, the emission spectra of Li7La3Hf2O12:xDy3+ phosphor exhibit several peaks attributed to the 4F9/2→6HJ (J = 11/2, 13/2 and 15/2) transitions with stable CIE chromaticity coordinates (0.417, 0.420) located in the white light region.

Emissive lead(II) benzenedicarboxylate metal-organic frameworks

Two known Pb(II) metal-organic frameworks (MOFs), pseudo-supramolecular isomeric pairs synthesized namely, [Pb $$_{3}$$ (BDC) $$_{3}$$ (DMF) $$_{3.5}$$ ] (1) and [Pb(BDC)(H $$_{2}$$ O)] (2) (where BDC $$=$$ benzenedicarboxylate) were synthesized and reexamined their structures to determine the topology of the networks. In that 1 displayed a 3D (10,3)-b linked network with having the ths topology whereas 2 shows a (6,3) 2D layers interconnected to a 3D framework structure. Remarkably, the desolvation of both 1 and 2 cause structural transformation to a known 3D network structure of [Pb(BDC)] $$_n$$ (3) as established by X-ray powder diffraction patterns. Photoluminescence studies in the solid-state at room temperature of 1–3 compounds exhibit interesting luminescence close to white light region due to ligand-to-metal charge-transfer (LMCT). Synopsis: Two pseudo-supramolecular isomeric pairs of Pb(II) metal-organic frameworks (MOFs) have been synthesized which show structural transformation to desolvated 3D network structure. All the compounds exhibit interesting solid-state photoluminescence at room temperature which is very close to white light emission.

White and yellow light emission from ZrO2:Dy3+ nanocrystals synthesized by a facile chemical technique

White and yellow light were obtained from ZrO2:Dy3+ nanocrystals which were synthesized by the solvent evaporation technique. The crystalline structure was studied by X-ray diffraction, resulting in a tetragonal and monoclinic mixture phases of ZrO2 when the powders were annealed at 600 °C and the zirconia monoclinic phase when they were thermal treated at 1000 °C. By means of atomic force microscopy images was observed that the synthesized powders are constituted by nanocrystals about 20 nm for the samples annealed at 600 °C, whereas samples annealed at 1000 °C were constituted by crystals about 135 nm, these features were confirmed by TEM images. Luminescence properties were analyzed by means of photo and cathodoluminescence; exhibiting emissions in the white light region of the chromatic diagram. In the case of photoluminescence white-warm color (x = 0.35, y = 0.37) was observed, which is close to pure white color; while for cathodoluminescence the emission was yellowish with coordinates (x = 0.39, y = 0.39) in the chromatic diagram. PL decay time measurements were carried out; a lifetime of 0.66 ms was found. In addition, the PL quantum efficiency was measured; the obtained value was as high as 45%.

Effects of the Heat Treatment on the Photoluminescence Properties for La1-XPrxVO4 Phosphor Prepared by a Hydrothermal Method

A hydrothermal method had been employed firstly for the preparation of La1-xPrxVO4 (x=0—0.05) nano-crystal phosphors, and then they were annealed at 600 oC for 4 h. The x-ray diffraction profiles show that the La1-xPrxVO4 phosphors still keep the tetragonal structure. The SEM results show that phosphor particles were increased from 60 nm to 80 nm after annealing process, and the surface morphology gradually changed from reunion to uniform distribution. The excitation spectra show that an absorption band between 200 ~ 330 nm is due to the charge transfer from the oxygen ligands to the central vanadium atom inside the VO4 3- anionic group, and the Pr3+ ion 4f-5d characteristic transition is located between in the 440 ~ 500 nm and 580 ~ 620 nm region. By 315 nm excitation, the main emission band still retains the characteristics for Pr3+ ion-doped LaVO4 phosphor, belonging to the host luminescent, and the 1D2→3H4, 3P0→3H6 electron transition of the Pr3+ ion, respectively. As the Pr3+ ion concentration increases, the color tone changes from blue ( 0 mol% Pr3+ ion doping ) to white (for 0.2-1 mol% Pr3+ ion doping), to blueish (for 5 mol% Pr3+ ion doping). Therefore, the color of the emission for (Y1-xPrx)InGe2O7 phosphors can be tuned by adjusting the Pr3+ ion concentration, without doping other color centers in a single phased host lattice. When the Pr3+ ion concentration of x=0.005, it possesses the strongest emission behavior, and is located in the white light region with a CIE chromaticity coordinates of x=0.299, y=258.

White light emitting device based on single-phase CdS quantum dots

White light emitting diodes (WLEDs) based on quantum dots (QDs) are emerging as robust candidates for white light sources, however they are suffering from the problem of energy loss resulting from the re-absorption and self-absorption among the employed QDs of different peak wavelengths. It still remains a challenging task to construct WLEDs based on single-phase QD emitters. Here, CdS QDs with short synthesis times are introduced to the fabrication of WLEDs. With a short synthesis time, on one hand, CdS QDs with a small diameter with blue emission can be obtained. On the other hand, surface reconstruction barely has time to occur, and the surface is likely defect-ridden, which enables the existence of a broad emission covering the range of green, yellow and red regions. This is essential for the white light emission of CdS QDs, and is very important for WLED applications. The temporal evolution of the PL spectra for CdS QDs was obtained to investigate the influence of growth time on the luminescent properties. The CdS QDs with a growth time of 0.5 min exhibited a colour rendering index (CRI) of 79.5 and a correlated colour temperature (CCT) of 6238 K. With increasing reaction time, the colour coordinates of the CdS QDs will move away from the white light region in the CIE 1931 chromaticity diagram. By integrating the as prepared white light emission CdS QDs with a violet GaN chip, WLEDs were fabricated. The fabricated WLEDs exhibited a CRI of 87.9 and a CCT of 4619 K, which satisfy the demand of general illumination. The luminous flux and the luminous efficiency of the fabricated WLEDs, being less advanced than current commercial white light sources, can be further improved, meaning there is a need for much more in-depth studies on white light emission CdS QDs.

Investigation of Luminescence Properties of Dy<sup>3+</sup> Doped Alkaline Earth Oxides Barium Phosphate Glasses

In this work, the optical and luminescence properties of Dy2O3 doped barium phosphate glass with different alkaline earth oxides (MgO, CaO and SrO) have been investigated. The glass samples were prepared by the melt-quenching technique at the melting temperature of 1200 °C. The absorption spectra of glasses were recorded in the ultraviolet, visible and near infrared (UV-Vis-NIR) region. The absorption bands centered at 385, 424, 452, 472, 754, 803, 901, 1093, 1273 and 1683 nm, respectively have been observed. The emission spectra of glass samples centered at 482, 574, 662 and 751 nm, respectively have been observed with 350 nm excitation wavelength. The result of radioluminescence spectra were slightly different with photoluminescence spectra. The coordinate of emitting color (x, y) for 350 excitation wavelength is 0.3781 and 0.4252, respectively which is located in white light region of CIE diagram.

Luminescence properties of Dy3+ doped lithium zinc borosilicate glasses for photonic applications

Different concentrations of Dy3+ ions doped lithium zinc borosilicate glasses of chemical composition (30-x) B2O3 - 25 SiO2 -10 Al2O3 -30 LiF - 5 ZnO - x Dy2O3 (x = 0, 0.1, 0.5, 1.0 and 2.0 mol%) were prepared by the melt quenching technique. The prepared glasses were investigated through X-ray diffraction, optical absorption, photoluminescence and decay measurements. Intensities of absorption bands expressed in terms of oscillator strengths (f) were used to determine the Judd-Ofelt (J-O) intensity parameters Ωλ (λ = 2, 4 and 6). The evaluated J-O parameters were used to determine the radiative parameters such as transition probabilities (AR), total transition probability rate (AT), radiative lifetime (τR) and branching ratios (βR) for the excited 4F9/2 level of Dy3+ ions. The chromaticity coordinates determined from the emission spectra were found to be located in the white light region of CIE chromaticity diagram.

Luminescence properties of Dy3+-doped alkali lead alumino borosilicate glasses

A new series of Dy3+-doped sodium lead alumino borosilicate glasses are prepared by the melt quenching technique with the chemical composition 20Na2O- 10PbO-(5-x)Al2O3-40B2O3–25SiO2-xDy2O3 (where x = 0, 0.5, 1.0 and 1.5 mol%) and are characterized by various spectroscopic techniques such as XRD, FT-IR, Optical absorption spectra, Fluorescence spectra and Decay measurements. Optical and Luminescence spectra of all the glasses are recorded at room temperature. From the optical absorption spectra, optical band gap and Urbach energies of Dy3+-doped titled glasses have been evaluated. The oscillator strengths and the intensity parameters, Ωλ (λ = 2, 4 and 6) are calculated using Judd-Ofelt analysis. The various lasing parameters like transition probability (AT), branching ratio (βR), stimulated emission cross-section (σe) and the radiative lifetime (τrad) for different emission levels of Dy3+ ions have been evaluated. Fluorescence spectra show sharp emission peaks are observed at 482 nm (blue), 575 nm (yellow) and 665 (red) under 385 nm excitation, which are attributed to 4F9/2→6H15/2, 6H13/2 and 6H11/2 transitions respectively. The yellow-to-blue intensity ratio (Y/B) increase up to 1.0 mol% Dy3+ ion content and beyond it decreases because of concentration quenching which occurs due to the energy transfer between Dy3+ and Dy3+ ions. The x, y coordinates of the prepared glasses pass through the white light region in the CIE 1931 chromaticity diagram. The results reveal that these glasses emit quality white light which is suitable for the development of W-LEDs. The color purity and the correlated color temperature (CCT) are also calculated for the present work. Various physical parameters such as density, refractive index, and ion concentration etc., are calculated. Among the prepared glasses, NPABSDy10 glass exhibits higher σe, βR, σexτR, and σexΔλeff values corresponding to the 4F9/2→6H13/2 emission band and these are in turn specifies its suitability for W-LEDs and visible laser applications.

Improved white light emission in Dy3+ doped LiF–CaO–Bi2O3–B2O3 glasses

The effect of substituting LiF on physical, structural, thermal, optical and photoluminescence properties of Dy3+ doped calcium bismuth borate glasses is reported in the present work. These glasses have been synthesized in the novel compositional range xLiF–(30–x)CaO–20Bi2O3–50B2O3 + 1 mol% of Dy2O3 (x = 0, 2, 5, 7, 10 and 15 mol%, abbreviated as LFx) through convenient melt-quench route. Non-crystalline nature of each composition has been confirmed through X-ray diffraction. Fundamental vibrations of bismuth-borate groups are identified thorough mid-IR absorption spectra. Thermal properties reveal a non-linear trend in glass transition and crystallization temperatures. In order to evaluate optical band gap, analysis of fundamental absorption edge has been done by considering valid Mott's transitions. The compositional trends in optical band gap have supported thermal and infrared absorption results. Evaluation of photoluminescence emission spectra yielded different emission parameters viz. Y/B ratio, color coordinates (x, y) and CCT (correlated color temperature). It has been found that emission of all compositions lie within the white light region and the emission parameters for samples LF2, LF7 and LF10 lie very close to perfect white light (0.333, 0.333). Therefore, these glasses can play the role of useful materials for WLEDs.

The effect of alkaline earth on luminescence properties of A-Na-B glasses (A = Mg, Ca, Sr and Ba) doped with Dy2O3

In this work, alkaline earth sodium borate glasses doped with Dy2O3 in chemical composition 10AO:25Na2O:64B2O3:1Dy2O3 (where AO = MgO, CaO, SrO and BaO) were prepared by melt-quenching technique. The density, molar volume and refractive index of the glass samples were carried out at room temperature. The excitation spectra under 575 nm emission wavelength showed peaks at 324, 336, 349, 363, 386, 424, 453 and 471 nm assigned by 6H15/2→4M17/2, 4I9/2, 6P7/2, 6P5/2, 4K17/2, 4G11/2, 4I15/2 and 4F9/2, respectively. The emission spectra, excited with 349 nm excitation wavelength, showed the peaks at 482 nm (4F9/2→6H15/2, blue light emission) and 575 nm (4F9/2→6H13/2, yellow light emission). The strongest emission was found in the glass sample with BaO. The color coordinates in the CIE 1931 chromaticity diagram of all glass samples were found in white light region and the CCT values of all samples were corresponding to the commercial cool white light (3100-4500 K).

Optical spectroscopy of Dy3+ doped Na2O-MgO-Bi2O3-SiO2 glasses for luminescence applications

The aim of the present work is to study the optical and luminescence properties of Dy2O3 doped Na2O-MgO-Bi2O3-SiO2 glasses. The Dy3+ ion is chosen as dopant because it emits three visible bands, blue (470–485 nm; 4F9/2→6H15/2), yellow (570–580 nm; 4F9/2→6H13/2) and red (640–655 nm; 4F9/2→6H11/2) luminescence and finds its applications in the fields of laser, white LEDs, telecommunication technology and display devices. NaMgBiSiDy glasses with the compositions of (30-x)SiO2: 10Bi2O3: 30Na2O: 30MgO: xDy2O3 where x=0.0, 0.1, 0.5, 1.0, 1.5 and 2.0 mol% were prepared by melt-quenching technique and characterized by using density, optical absorption photoluminescence (PL) and decay rate measurements as function of different concentrations. The chromaticity coordinates were calculated from emission spectra and analyzed with CIE color diagram and appear in the white light region under ultraviolet excitation.

Structure and luminescence properties of La6Ba4(SiO4)6F2:Dy3+ phosphor with apatite structure.

In this study, we investigated the structure, luminescence properties and morphology of La6Ba4(SiO4)6F2:Dy3+ in detail using X-ray diffraction (XRD), photoluminescence spectroscopy, scanning electron microscopy (SEM) and decay kinetics measurements. The results indicate that La6Ba4(SiO4)6F2:Dy3+ was well crystallized, and its structure is of apatite-type and belongs to the hexagonal system. The prepared samples exhibit two intense characteristic bands in the blue (484 nm) and yellow (579 nm) spectral ranges corresponding to the Dy3+ transitions 4F9/2 → 6H15/2 and 4F9/2 → 6H13/2, respectively. These dominant photoluminescence bands are accompanied by a weak red band (670 nm) due to the 4F9/2 → 6H11/2 transition. The emission color of La6Ba4(SiO4)6F2:Dy3+ phosphors are found to fall in the white light region. The Dy3+ optimal dopant concentration in the La6Ba4(SiO4)6F2 host was found to be 0.12 (mol). In addition, the phosphors have high thermal stability. Hence, La6Ba4(SiO4)6F2:Dy3+ may have an application in white light-emitting diodes.

Experimental and theoretical approach on the optical properties of zinc borotellurite glass doped with dysprosium oxide

A series of glass samples with chemical formula {[(TeO2)0.7(B2O3)0.3]0.7(ZnO)0.3}1−x(Dy2O3)x where x=0.01, 0.02, 0.03, 0.04 and 0.05M fraction were synthesized through conventional melt-quenching method. The most common way to fabricate a glass material is by fusion of two or more component oxides followed by their quenching. This technique is known as melt-quenching technique. Kaur et al. (2016) [1] highlighted that the melt-quenching method able to enhance the mechanical properties like hardness and flexural strength of the material. The nature of the glass systems is proven to be amorphous based on the XRD pattern. The FTIR spectra of the glass systems confirm the existence of five bands which are assigned for the BO4, BO3, TeO4 and TeO3 vibrational groups. The density of the glass systems is increased with the addition of Dy2O3 while the molar volume is found to be inversely proportional to the density of the proposed glass. The optical properties of the glasses are determined through the absorption spectra obtained from the UV-VIS spectrophotometer. From the absorption spectra, the indirect and direct optical band gaps and the Urbach energy are found to be inversely proportional to each other. As the molar fraction of the Dy2O3 increased, the optical band gaps are observed to increase as opposed to the Urbach energy. For this glass system, the values of refractive index, electronic polarizability, oxide ion polarizability and the optical basicity are found to decrease as the addition of the dysprosium oxide is increased. From the emission spectra, two intense blue and yellow emission bands are observed, which correspond to the 4F9/2→6H15/2 and 4F9/2→6H13/2 transitions of Dy3+ ions respectively. The CIE chromaticity coordinates of the zinc borotellurite glass systems are found to be located in the white light region.