Journal ArticleDOI
Mn2+ and Mn4+ red phosphors: synthesis, luminescence and applications in WLEDs. A review
Qiang Zhou,Leonid Dolgov,Alok Mani Srivastava,Lei Zhou,Zhengliang Wang,Jianxin Shi,Miroslav D. Dramićanin,Mikhail G. Brik,Mikhail G. Brik,Mikhail G. Brik,Mingmei Wu,Mingmei Wu +11 more
TLDR
An overview of recent studies on transition metal activated phosphors can be found in this article, including detailed synthesis routes (solid-state reaction and wet-chemical synthesis) and description of luminescence mechanisms and phosphors' behaviors; discuss their promising applications in white light-emitting diodes.Abstract:
Transition-metal activated phosphors are an important family of luminescent materials that can produce white light with an outstanding color rendering index and correlated color temperature for use in light-emitting diodes. In recent years, work in this quite “hot” research field has focused on the development of Mn2+ and Mn4+ activated red phosphors. In this review article, we provide an overview of recent studies on Mn2+ and Mn4+ doped phosphors, including detailed synthesis routes (solid-state reaction and wet-chemical synthesis) and description of luminescence mechanisms and phosphors’ behaviors; discuss their promising applications in white light-emitting diodes; and present an extensive list of references to representative works in this field.read more
Citations
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Journal ArticleDOI
A review on the advancements in phosphor-converted light emitting diodes (pc-LEDs): Phosphor synthesis, device fabrication and characterization
TL;DR: The role of phosphors in the advancement of light-emitting diodes (LEDs) has been discussed in this paper, where a thorough discussion about the various methods employed for the synthesis of the phosphors and the materials involved in the fabrication of PC-LEDs are discussed.
Journal ArticleDOI
Color Conversion Materials for High-Brightness Laser-Driven Solid-State Lighting
Journal ArticleDOI
Cs2NaBiCl6:Mn2+—A New Orange-Red Halide Double Perovskite Phosphor
TL;DR: In this paper, the photoluminescent behavior of cubic double perovskite Cs2NaBiCl6-xBrx:Mn2+ doped with Mn2+ ions was investigated.
Journal ArticleDOI
Improving Quantum Efficiency and Thermal Stability in Blue-Emitting Ba2–xSrxSiO4:Ce3+ Phosphor via Solid Solution
Xiaoyu Ji,Jilin Zhang,Ying Li,Shuzhen Liao,Xinguo Zhang,Zhiyu Yang,Zhengliang Wang,Zhongxian Qiu,Wenli Zhou,Liping Yu,Shixun Lian +10 more
TL;DR: In this paper, the effect of replacing Ba2+ by Sr2+ on the red shift of the emission band and the increase of quantum efficiency and thermal stability was investigated in detail based on the Rietveld refinements, Raman spectra, thermoluminescence, and decay curves, etc.
Journal ArticleDOI
Manganese(II) in Tetrahedral Halide Environment: Factors Governing Bright Green Luminescence
Viktoriia Morad,Viktoriia Morad,Ihor Cherniukh,Ihor Cherniukh,Lena Pöttschacher,Yevhen Shynkarenko,Yevhen Shynkarenko,Sergii Yakunin,Sergii Yakunin,Maksym V. Kovalenko,Maksym V. Kovalenko +10 more
TL;DR: It is found that the choice of the halide as well as subtle details of the crystal structure profoundly govern the photoluminescence peak positions and emission line widths and radiative lifetimes through the altered ligand-field effects and degrees of spin–orbit coupling.
References
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Journal ArticleDOI
Phosphors in phosphor-converted white light-emitting diodes: Recent advances in materials, techniques and properties
TL;DR: In this article, the most recent advances in the synthesis and application of phosphors for white light-emitting diodes (pc-WLEDs) with emphasis specifically on: (a) principles to tune the excitation and emission spectra of the phosphors: prediction according to crystal field theory, and structural chemistry characteristics (e.g. covalence of chemical bonds, electronegativity, and polarization effects of element); (b) pc-W LEDs with phosphors excited by blue-LED chips: phosphor characteristics, structure, and activated ions
Journal ArticleDOI
On the Absorption Spectra of Complex Ions II
Yukito Tanabe,Satoru Sugano +1 more
TL;DR: In this paper, the authors solved the energy levels which are important in the absorption spectra of the normal complex ions, leaving the crystalline field strength as a parameter The values of B and C (Racah's parameters) there needed are determined from the observed spectras of free ions or in some cases by extrapolation The f -values of the transitions which connect energy levels calculated are estimated and compared with the observed intensities.
Book
Optical spectroscopy of inorganic solids
Brian Henderson,G. F. Imbusch +1 more
TL;DR: In this article, the authors present symmetry and group representation theory for Inorganic Solids and Spectroscopy of Lanthanide (rare-earth) and Actinide Ions in Solids.
Journal ArticleDOI
Highly efficient non-rare-earth red emitting phosphor for warm white light-emitting diodes
Haomiao Zhu,Chun Che Lin,Wenqin Luo,Situan Shu,Zhuguang Liu,Yongsheng Liu,Jintao Kong,En Ma,Yongge Cao,Ru-Shi Liu,Xueyuan Chen +10 more
TL;DR: These findings show great promise of K2TiF6:Mn(4+) as a commercial red phosphor in warm white LEDs, and open up new avenues for the exploration of novel non-rare-earth red emitting phosphors.
Journal ArticleDOI
Progress in discovery and structural design of color conversion phosphors for LEDs
Zhiguo Xia,Quanlin Liu +1 more
TL;DR: In this paper, a review of the recent advances in the discovery and structural design of LED phosphors is presented, including the discovery of the novel phosphors from the existing structural models, discovery of new crystal materials by doping and structural modification of the known phosphors.