Enhanced photoluminescence due to Bi3+ ! Eu3+ energy transfer and re-precipitation of RE doped homogeneous sized Y2O3 nanophosphors

Title
Enhanced photoluminescence due to Bi3+ ! Eu3+ energy transfer and re-precipitation of RE doped homogeneous sized Y2O3 nanophosphors
Authors
박종구이승용조소혜투 둥 티 딘소반 칸아비짓 자다브박성욱오주현문병기장기원이성수김정환정정현
Keywords
phosphor; quantum cutting; nanoparticle; Bi; energy transfer
Issue Date
2016-11
Publisher
Materials research bulletin
Citation
VOL 83-192
Abstract
Precipitation and re-precipitation of metal ions has been carried out from original and supernatant solution producing Bi3+ - Eu3+ doped Y2O3:Eu3+ and Eu3+/Tb3+ doped Y2O3, respectively. Shorter reaction time is unable to consume all metal ions present in the solution which can be utilized through re precipitation process. The doping of Bi3+ - Eu3+ in Y2O3 helps to absorb maximum UV light. The activation of Y2O3 matrix by Bi3+ and Eu3+ ions, together and separately, were studied considering the excitation energy transfer to the luminescence centers. The successful replacement of Y3+ by RE3+ ions can help for fine tuning of emission wavelength. Re-precipitation of supernatant solution by adding terbium precursor can successively produce uniform sized Tb3+ doped Y2O3:Eu3+. The re-precipitation of the supernatant solution ensures maximum consumption of metal ions for higher product yield and possible fine tuning of emission wavelengths. (C) 2016 Elsevier Ltd. All rights reserved.
URI
http://pubs.kist.re.kr/handle/201004/64888
ISSN
0025-5408
Appears in Collections:
KIST Publication > Article
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