Red Phosphors(红色荧光粉)研究综述
Red Phosphors 红色荧光粉 - The TL studies were carried out for the prepared phosphors using UV radiation (UV 254 nm), and a single glow peak was found in this study. [1] Fluorescent lamp wastes are an important source for REE recovery since they contain significant amounts, up to 55 wt%, of Y and Eu in red phosphors. [2] The prepared phosphors are a good option for the green-emitting component in plasma-display panels (PDPs). [3] The crystal structure and photoluminescence properties of the as-prepared phosphors were investigated by X-ray powder diffraction, photoluminescence excitation and emission spectra. [4] This study proves that the pre-assessments for the rare earths doped laser single crystals by using their corresponding easy-prepared phosphors are workable. [5] However, most of the current red phosphors suffer from shortages of high cost, complex synthesis process and harsh preparation conditions. [6] The above results indicated that the as-prepared phosphors could show potential applications in optical thermometer. [7] The SEM observations shows that all the prepared phosphors have spheroid, Bi-pyramidal shape with different grain size. [8] In addition, the thermal stability of luminescence shows that the response of Mn2+ and Mn4+ to the temperature is obviously different in LaMAl11O19, implying the potential of the prepared phosphors as optical thermometers. [9] From the CIE color chromaticity analysis it is evident that the prepared phosphors are found to emit an intense red light with the reasonable color coordinate and color purity under the excitation of blue light and the same may be suggested as an appropriate red component for developing white LEDs. [10] The present investigation proves the Eu3+ doped Na6CaP2O9 to be a potential orange-red phosphors in near-UV based LEDs. [11] The Rietveld refinement confirms that the prepared phosphors have an orthorhombic phase. [12] Trivalent europium ions (Eu 3+ ) are known as luminescent centers leading to red emission of high color purity; the property utilized in red phosphors. [13] The photoluminescence properties of the as‐prepared phosphors were investigated and the Ce3+ ions in these hosts were found to give little broadband emission in the UV range at 344 nm on exciting it at 300 nm. [14] An efficient TCTA:CN-T2T exciplex system was used as the host of the emitting layer, facilitating effective energy transfer from the exciplex host to the red and deep-red phosphors. [15] A combination of cyan and red phosphors with near-ultraviolet (n-UV) LED chip has been proposed to solve these problems. [16] Here, a series of Ba2LuNbO6:Eu3+ red phosphors can be efficiently pumped by the near-ultraviolet (UV) light and then present high-brightness at orange emission (598 nm, 5D0→7F1) and red emission (610 nm, 5D0→7F2). [17] X-ray diffraction patterns verify that the as-prepared phosphors attain the standard Ca19Zn2(PO4)14 phase without impurities. [18] An X-ray diffractometer and a fluorescence transient spectrometer were used to characterize the crystal structure and luminescence properties of the prepared phosphors. [19] 8%, which is much higher than many other red phosphors. [20] 08 mol%, all of the as-prepared phosphors generated yellow light emissions, and the emission peak was located close to 576 nm. [21] All the prepared phosphors show polycrystalline nature with a grain size of about 49 nm as confirmed from XRD and SEM. [22] The doping effects of nanocrystalline TbB6 on the phase composition, the microstructure and photoluminescence of as-prepared phosphors were characterized by means of Rietveld refinement XRD, FESEM and photoluminescence measurements. [23] The Ca2Al2SiO7:Eu3+ red phosphors have three phonon sidebands with energies ~ 673 cm-1, 848 cm-1 and 1443 cm-1 which have been determined via the excitation spectra of Eu3+ ions in Ca2Al2SiO7 materials. [24] The luminescence improvement mechanism of as-prepared phosphors was analyzed. [25] The dependence on the phase structure, particle morphology, photoluminescence property and thermal quench behavior of the as-prepared phosphors were studied in detail. [26] The as-prepared phosphors belong to the perovskite structure with the space group of R 3 ¯ (No. [27] The crystal structures, morphologies, and luminescence properties of the as-prepared phosphors were investigated. [28] The prepared phosphors emitted green color in visible domain and thus have potential applications in w-LEDs lighting and displays. [29] X-ray powder diffraction (XRD) patterns of the as-prepared phosphors indicate that the introduction of Tb3+ or Eu3+ affects neither the phase impurity nor the crystal structure of the CZLP host lattice. [30] Rare earth europium ion (Eu3+ ) can emit red characteristic fluorescence under UV excitation and is preferred for the preparation of red phosphors for near-UV white LEDs. [31] Under 300 nm excitation, with increasing doping concentration of Eu3+, these as-prepared phosphors showed adjustable luminous color from blue to red, which was induced by Eu3+-concentration-dependent energy transfer behavior from host to Eu3+. [32] The PL study revealed that the prepared phosphors exhibit efficient green emission at 549 nm, when excited at 379 nm excitation wavelength. [33] Herein, the organic blue-green emitting materials mixed with green and red phosphors are used to construct the hybrid WLED. [34] The structural and optical properties of the prepared phosphors were studied. [35] Transmission electron microscopic analysis is used to study the morphology and particle size of prepared phosphors. [36] PL studies conducted on the prepared phosphors revealed that at high concentration of the doped rare earth (RE) ion, the distance between Er3+-Er3+ decreased, leading to the formation of clusters. [37] Characteristic emission of the activators was observed in the prepared phosphors. [38] The fundamental physicochemical properties of the prepared phosphors were examined. [39] (SEM), CIE colour coordinates including their PL properties with emission intensity effect too were analyzed for the characteristics of prepared phosphors. [40] The surface morphology of the prepared phosphors is determined by SEM, which shows a sphere-like structure and good connectivity of the grains. [41] In this work, the photoluminescence features, decay lifetime, internal quantum yield, and thermal stability of whitlockite structured phosphors of Ca9MgLi(PO4)7:Dy3+ were investigated. [42] The proposed material may bring a new inside for the existing problems of the red phosphors regarding the brightness, colour correlation temperature and colour rendering index. [43] All the prepared phosphors formed a rhombohedral unit cell with the R3c space group. [44] Herein, with the combination of blue exciplex/electroplex and green/red phosphors, blue molecular emitter-free and doping-free WOLEDs have been developed. [45] All results indicated that the prepared phosphors could be applied as a potential red component of the w-LEDs excited by near-ultraviolet InGaN chips. [46] Down-shifting (DS) studies under 393 nm and 405 nm excitation were recorded to understand the utility of the as prepared phosphors for lighting applications. [47] Thus, these high thermostability NaCa3Bi(PO4)3F:Sm3+ orange-red phosphors can be potentially used in w-LED applications. [48] In this work, Sm3+ ions were introduced into Ca9Nd(PO4)7: Eu3+ (CNPO: Eu3+) red phosphors as a co-dopant to boost the blue-light excitation. [49] 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. [50]使用紫外辐射 (UV 254 nm) 对制备的磷光体进行 TL 研究，在该研究中发现了单个发光峰。 [1] 荧光灯废料是 REE 回收的重要来源，因为它们在红色荧光粉中含有高达 55 wt% 的大量 Y 和 Eu。 [2] 制备的荧光粉是等离子显示面板 (PDP) 中绿色发射组件的良好选择。 [3] 通过X射线粉末衍射、光致发光激发和发射光谱研究了所制备的荧光粉的晶体结构和光致发光性质。 [4] 本研究证明，利用相应的易制备荧光粉对掺稀土激光单晶进行预评估是可行的。 [5] 然而，目前大多数红色荧光粉存在成本高、合成工艺复杂、制备条件苛刻等不足。 [6] 上述结果表明，所制备的荧光粉在光学温度计中具有潜在的应用价值。 [7] SEM观察表明，所有制备的荧光粉都具有不同粒径的球状、双锥体形状。 [8] 此外，发光的热稳定性表明，在 LaMAl11O19 中，Mn2+ 和 Mn4+ 对温度的响应明显不同，这表明所制备的荧光粉具有作为光学温度计的潜力。 [9] 从 CIE 色度分析可以看出，制备的荧光粉在蓝光激发下发出强烈的红光，具有合理的色坐标和色纯度，同样可以作为开发白光 LED 的合适红色成分。 . [10] 目前的研究证明 Eu3+ 掺杂的 Na6CaP2O9 是近紫外 LED 中潜在的橙红色荧光粉。 [11] Rietveld 改进证实制备的荧光粉具有正交相。 [12] 三价铕离子 (Eu 3+ ) 被称为发光中心，导致高色纯度的红色发射；红色荧光粉中使用的特性。 [13] 研究了所制备的荧光粉的光致发光特性，发现这些主体中的 Ce3+ 离子在 300 nm 处激发时在 344 nm 的紫外范围内几乎没有宽带发射。 [14] 高效的 TCTA:CN-T2T exciplex 系统被用作发光层的主体，促进了从 exciplex 主体到红色和深红色荧光粉的有效能量转移。 [15] 已经提出了将青色和红色荧光粉与近紫外 (n-UV) LED 芯片相结合来解决这些问题。 [16] 在这里，一系列 Ba2LuNbO6:Eu3+ 红色荧光粉可以被近紫外 (UV) 光有效泵浦，然后在橙色发射 (598 nm, 5D0→7F1) 和红色发射 (610 nm, 5D0→7F2) 下呈现高亮度）。 [17] X 射线衍射图证实所制备的荧光粉达到标准 Ca19Zn2(PO4)14 相，不含杂质。 [18] X射线衍射仪和荧光瞬态光谱仪用于表征制备的荧光粉的晶体结构和发光特性。 [19] 8%，远高于许多其他红色荧光粉。 [20] 08 mol%时，所制备的荧光粉均产生黄光发射，发射峰位于576 nm附近。 [21] 从 XRD 和 SEM 证实，所有制备的荧光粉均显示多晶性质，晶粒尺寸约为 49 纳米。 [22] 通过 Rietveld 细化 XRD、FESEM 和光致发光测量表征了纳米晶 TbB6 的掺杂对所制备荧光粉的相组成、微观结构和光致发光的影响。 [23] Ca2Al2SiO7:Eu3+ 红色荧光粉具有三个声子边带，能量分别为 ~ 673 cm-1、848 cm-1 和 1443 cm-1，这是通过 Ca2Al2SiO7 材料中 Eu3+ 离子的激发光谱确定的。 [24] 分析了所制备的荧光粉的发光改善机理。 [25] 详细研究了所制备的荧光粉对相结构、颗粒形态、光致发光性质和热猝灭行为的依赖性。 [26] 所制备的荧光粉属于钙钛矿结构，空间群为 R 3 ¯ (No. [27] 研究了所制备的荧光粉的晶体结构、形貌和发光特性。 [28] 制备的荧光粉在可见域中发出绿色，因此在 w-LED 照明和显示器中具有潜在的应用。 [29] 所制备的荧光粉的 X 射线粉末衍射 (XRD) 图表明 Tb3+ 或 Eu3+ 的引入既不影响相杂质也不影响 CZLP 主晶格的晶体结构。 [30] 稀土铕离子 (Eu3+) 在紫外激发下可发出红色特征荧光，是制备近紫外白光 LED 的红色荧光粉的首选。 [31] 在 300 nm 激发下，随着 Eu3+ 掺杂浓度的增加，这些制备的荧光粉显示出从蓝色到红色可调的发光颜色，这是由 Eu3+ 浓度依赖性能量从主体到 Eu3+ 的转移行为引起的。 [32] PL 研究表明，当在 379 nm 激发波长下激发时，制备的荧光粉在 549 nm 处表现出有效的绿色发射。 [33] 在此，混合了绿色和红色荧光粉的有机蓝绿色发光材料用于构建混合WLED。 [34] 研究了制备的荧光粉的结构和光学性质。 [35] 透射电子显微镜分析用于研究制备的荧光粉的形态和粒径。 [36] 对制备的荧光粉进行的 PL 研究表明，在高浓度的掺杂稀土 (RE) 离子下，Er3+-Er3+ 之间的距离减小，导致簇的形成。 [37] 在制备的磷光体中观察到活化剂的特征发射。 [38] 检查了制备的荧光粉的基本物理化学性质。 [39] (SEM)、CIE 颜色坐标，包括它们的 PL 特性和发射强度效应，也对制备的荧光粉的特性进行了分析。 [40] 制备的荧光粉的表面形貌由 SEM 确定，其显示出球形结构和良好的晶粒连接性。 [41] 在这项工作中，研究了 Ca9MgLi(PO4)7:Dy3+ 的白云石结构荧光粉的光致发光特性、衰变寿命、内量子产率和热稳定性。 [42] 所提出的材料可能会为红色荧光粉存在的亮度、颜色相关温度和显色指数等问题带来新的内涵。 [43] 所有制备的荧光粉均形成具有R3c空间群的菱面体晶胞。 [44] 在此，通过结合蓝色激发复合物/电解质和绿色/红色荧光粉，开发了无蓝色分子发射体和无掺杂的 WOLED。 [45] 所有结果表明，制备的荧光粉可以用作由近紫外 InGaN 芯片激发的 w-LED 的潜在红色成分。 [46] 记录了在 393 nm 和 405 nm 激发下的下移 (DS) 研究，以了解所制备的荧光粉在照明应用中的效用。 [47] 因此，这些高热稳定性 NaCa3Bi(PO4)3F:Sm3+ 橙红色荧光粉可以潜在地用于 w-LED 应用。 [48] 在这项工作中，将 Sm3+ 离子作为共掺杂剂引入 Ca9Nd(PO4)7: Eu3+ (CNPO: Eu3+) 红色荧光粉中以增强蓝光激发。 [49] 非稀土 Mn4+ 激活的宽带发射深红色荧光粉被认为是室内植物生长 LED 中潜在的红色发射体，因为它们的发射峰可以很好地与植物色素的吸收重叠。 [50]
white light emitting
The exploration of new red phosphors is important for the development of white light-emitting diodes (w-LEDs), as existing red phosphors exhibit low efficiency and low performance. [1] The results suggest that the prepared phosphors are a potential candidate for phosphor-converted white light-emitting diodes and optoelectronic devices. [2] In order to achieve high color rendering lighting, the influence of the composition and structure of the three-layered phosphors on the optical, thermal, and electrical properties of the chip-on-board (COB) packaged white-light-emitting diodes (WLEDs) was studied systematically. [3] Mn4+-activated fluorides rank among the most significant red phosphors for white light emitting diodes (LEDs) with enhanced color rendition, while their poor moisture resistance hinders further application. [4] All the consequences manifest that Ba2MgWO6:Sm3+ orange-red phosphors possess the potential for the application in the white light emitting diodes. [5] Non-rare-earth Mn4+-doped oxide red phosphors received increasing attention in the white light-emitting diode (LED) field for their admirable chemical stability and spectral properties. [6] Mn4+-activated oxide red phosphors are always a hot topic in the luminescent material field to solve the lack of red light components in white-light-emitting diodes (WLEDs). [7] The result indicates that the acquired phosphors can be potential for the use of ultraviolet excited white light emitting diodes. [8] The search of efficient and thermal-stable red phosphors for NUV chip-based white light-emitting diodes (WLEDs) remains quite a challenge for phosphor development. [9] On this basis, we come to a conclusion that the prepared phosphors enjoy tremendous potentials serve as red emitting phosphor for near ultraviolet white light emitting diodes (NUV WLEDs). [10] 3Tb3+ cyan-emitting phosphors with commercial CaAlSiN3:Eu2+ red phosphors on a 365 nm near-ultraviolet (NUV) LED chip, a white light-emitting diode (WLED) device with low correlated color temperature (4850 K), good color rendering index (92), and CIE chromaticity coordinates (0. [11] The as-prepared phosphors have a great potential as a credible candidate for near ultra-violet excited white light emitting phosphor. [12]由于现有的红色荧光粉表现出低效率和低性能，因此探索新的红色荧光粉对于开发白光发光二极管 (w-LED) 具有重要意义。 [1] 结果表明，制备的荧光粉是荧光粉转换的白光发光二极管和光电器件的潜在候选者。 [2] nan [3] nan [4] nan [5] 非稀土 Mn4+ 掺杂氧化物红色荧光粉因其出色的化学稳定性和光谱特性而在白光发光二极管 (LED) 领域受到越来越多的关注。 [6] Mn4+激活氧化物红色荧光粉一直是发光材料领域的热门话题，以解决白光发光二极管（WLED）中缺少红光成分的问题。 [7] nan [8] nan [9] nan [10] nan [11] nan [12]
high temperature solid
Red phosphors based on BaLaLiTeO6 doped with Eu3+ were prepared by high temperature solid state method. [1] The SLT:Mn4+ red phosphors were successfully synthesized by high-temperature solid-state route under air atmosphere. [2] 5, 3) orange-red phosphors were synthesized by high-temperature solid-phase reaction. [3] Sn4+/Ti4+ co-doped SrGe4O9:Mn4+ deep red phosphors were synthesized via high temperature solid state method. [4] In this study, a series of Eu3+-doped NaBaBi2(PO4)3 red phosphors were synthesized by high-temperature solid-phase reaction method, and the phase structure and photoluminescence properties of the samples were investigated in detail. [5] A series of Eu3+-activated Sr2LaTaO6 red phosphors were synthesized by the traditional high temperature solid-state reaction process. [6] Novel orange-red phosphors Gd2InSbO7:Sm3+ were successfully prepared through the conventional high-temperature-solid state reaction. [7] CaMgLaSbO6 (CMLS): Mn4+ far-red phosphors were successfully synthesized by high temperature solid state reaction. [8] A series of deep red phosphors with perovskite-like oxide LaSrGaO4 as host are synthesized by a high temperature solid state method, and the luminescence properties and mechanisms have been investigated in detail. [9]采用高温固相法制备了基于BaLaLiTeO6掺杂Eu3+的红色荧光粉。 [1] SLT:Mn4+红色荧光粉在空气气氛下采用高温固相路线成功合成。 [2] nan [3] 采用高温固相法合成Sn4+/Ti4+共掺杂SrGe4O9:Mn4+深红色荧光粉。 [4] nan [5] nan [6] nan [7] nan [8] nan [9]
color rendering index
In the light of these results, the proposed composites can bring a new approach for the existing problems of yellow, orange, and red phosphors concerning the brightness and color rendering index and can be considered as potential candidates on LED technologies. [1] The proposed material may bring a new inside for the existing problems of the red phosphors regarding the brightness, color correlation temperature, and color rendering index. [2] Finally, the critical parameters including color rendering index (CRI), correlated color temperature (CCT), light efficiency of light emitting diodes (LEDs) packaged with the resultant green phosphors and red phosphors were studied. [3] Nowadays, Mn4+-doped red phosphors are widely used in white LEDs to improve the color rendering index and decrease the correlated color temperature. [4] The optical simulation and the real fabrication of white LEDs with a combination of our green phosphor and one of possible orange-red phosphors demonstrated that the white LED with Sr3SiO5:Eu2+ orange phosphor gives the best luminous efficacy and the appropriate color rendering index of 70 under the daylight color temperature of 6400 K. [5]鉴于这些结果，所提出的复合材料可以为现有的黄色、橙色和红色荧光粉在亮度和显色指数方面的问题带来新的方法，并且可以被认为是 LED 技术的潜在候选者。 [1] 所提出的材料可能会为红色荧光粉存在的亮度、颜色相关温度和显色指数等问题带来新的内涵。 [2] nan [3] nan [4] nan [5]
warm white light
Mn4+-activated fluoride red phosphors, the most important red phosphors for warm white light emitting diodes (LEDs), usually suffer from inherent poor moisture resistance which is a major obstacle to their long-lasting outdoor applications in a high humidity environment. [1] Eu3+-activated oxide components appear as a kind of rare-earth red phosphors that can be used for warm white light-emitting diode (LEDs). [2] Mn4+-activated fluoride red phosphors have a bright prospect for improving the warm white light-emitting diodes (W-LEDs) performances, whereas there remains some challenges in synthesis, such as reducing the consumption of toxic HF and improving Mn4+ doping efficiency. [3] The results indicate that the prepared Y2Mo4O15:Pr3+, Tb3+ red phosphors are suitable for the applications of blue-excited warm white light-emitting diodes. [4]Mn4+ 激活的氟化物红色荧光粉是暖白光发光二极管 (LED) 中最重要的红色荧光粉，通常具有固有的耐湿性差，这是其在高湿度环境中长期户外应用的主要障碍。 [1]</