Synthesis and luminescence properties of novel deep red emitting phosphors Li2MgGeO4:Mn4+
2015 ◽
Vol 08
(04)
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pp. 1550046
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Keyword(s):
Novel deep red phosphor Li 2 MgGeO 4: Mn 4+ is synthesized by high temperature solid state reaction method in air. The strongest PL band peaking at ~ 671 nm in the range of 600–750 nm is due to the 2E → 4A2 transition of Mn 4+ ion and the PLE spectra shows broad band peaking at ~ 323 within the range 220–550 nm owing to the 4A2 → 4T1 transitions of Mn 4+ ion. The optimum Mn 4+ doping concentration is about 0.4 mol.%. The luminous mechanism is explained by Tanabe–Sugano diagram of Mn 4+ ion. The results indicate that red phosphor Li 2 MgGeO 4: Mn 4+ is a beneficial phosphor for use in white light-emitting-diodes (LEDs).
2015 ◽
Vol 3
(27)
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pp. 7096-7104
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2015 ◽
Vol 3
(24)
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pp. 6341-6349
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2015 ◽
Vol 67
(3)
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pp. 556-562
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2016 ◽
Vol 18
(41)
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pp. 28661-28673
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2012 ◽
Vol 132
(1)
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pp. 71-75
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