A tunable single-component warm white-light Sr3Y(PO4)3:Eu2+,Mn2+ phosphor for white-light emitting diodes

Literature Information

Publication Date 2011-07-20
DOI 10.1039/C1CP20635D
Impact Factor 3.676
Authors

Hongpeng You


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Abstract

The photoluminescence properties and energy transfer of the Eu2+ and Mn2+ co-doped Sr3Y(PO4)3 phosphors are investigated in detail. Two main emission bands attributed to the Eu2+ and Mn2+ ions are observed under UV light excitation via an efficient energy transfer process. When the Eu2+ doping content is fixed, the emission chromaticity can be varied by simply adjusting the content of Mn2+. The study of the behavior as a function of doping concentration indicates that the warm white-light can be obtained in a single host lattice. Furthermore, the analysis of the fluorescence decay curves based on the Inokuti–Hirayama theoretical model reveals that the dipole–quadrupole interaction is mainly responsible for the energy transfer mechanism from the Eu2+ to Mn2+ ions in the Sr3Y(PO4)3 phosphor. The developed phosphor exhibits a strong absorption in UV spectral region and white-light emission which may find utility as a single-component white-light-emitting UV-convertible phosphor in white LED devices.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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