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- W2604745596 abstract "Abstract Herein, we report a series of phosphate phosphors Ca 9 Ce(PO 4 ) 7 : x Tb 3+ /yMn 2+ , exhibiting much efficient energy transfer, stable thermal stability and high quantum efficiency. First of all, Ca 9 Ce(PO 4 ) 7 host is full of sensitizers (Ce 3+ ) and the maximum energy transfer efficiency from Ce 3+ to Mn 2+ and Tb 3+ reaches 91% and 72%, respectively. In Ca 9 Ce(PO 4 ) 7 : x Tb 3+ /yMn 2+ system, white light can be obtained by mixing the tricolor composition at a suitable ratio. Energy transfer from Ce 3+ to Mn 2+ /Tb 3+ is confirmed via an electronic dipole-dipole (d-d) interaction. We found that the Mn 2+ emission intensity of Ca 9 Ce(PO 4 ) 7 : Mn 2+ keeps unchanged during the rising temperature and the Tb emission lines of Ca 9 Ce(PO 4 ) 7 :0.15Tb 3+ are not affected by the increasing temperature. Meanwhile, quantum efficiency (QE > 60%) of Ca 9 Ce(PO 4 ) 7 : x Tb 3+ /yMn 2+ presents a stable output until the temperature rises to 150 °C. We also report the luminescence quenching temperature (T > 300 °C) and the activation energy for thermal quenching (ΔE > 0.2 eV). To prove the potential application, a proof-of-concept white LEDs is fabricated by combining the single-component phosphor Ca 9 Ce(PO 4 ) 7 :Mn 2+ , Tb 3+ with a UV LED chip, which has a CIE chromaticity coordinate (0.347, 0.344), color temperature (4770 K), color rendering index (Ra = 80.4) and R 9 = 92.3." @default.
- W2604745596 created "2017-04-14" @default.
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- W2604745596 date "2017-08-01" @default.
- W2604745596 modified "2023-10-17" @default.
- W2604745596 title "A full-color emitting phosphor Ca 9 Ce(PO 4 ) 7 :Mn 2+ , Tb 3+ : Efficient energy transfer, stable thermal stability and high quantum efficiency" @default.
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- W2604745596 doi "https://doi.org/10.1016/j.cej.2017.04.032" @default.
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