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  • Title: [Upconversion of oxide Y2O3 doped with (Yb3+ , Er3+) ions with 978 nm excitation].
    Author: Liu HQ, Wang LL, Li HJ.
    Journal: Guang Pu Xue Yu Guang Pu Fen Xi; 2006 Aug; 26(8):1396-9. PubMed ID: 17058930.
    Abstract:
    Two nanomaterials Y2O3 : Er3+ and Y2O3 : (Yb3+, Er3+) were prepared by combustion on the basis of reagents Y2O3, Yb2O3 and Er2O3. The corresponding host Y2O3 : (Yb3+, Er3+) was obtained by increasing calcination temperature. Upconversion emission was obtained under 978 nm LD excitation. Comparing nanopowder oxide Y2O3 : Er3+ with nanometer materials Y2O3 : (Yb3+, Er3+) with respect to upconversion spectra, the upconversion emission of the former mainly was green upconversion and that of the latter mainly red light. However, the upconversion emission of nanopowder Y2O3 : (Yb3+, Er3+) was different from that of its corresponding host, with main red upconversion emission for the former but main green upconversion emission on the latter.
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