4.6 Article

Efficient fluorescence emission and photon conversion of LaOF: Eu3+ nanocrystals

Journal

APPLIED PHYSICS LETTERS
Volume 98, Issue 1, Pages -

Publisher

AMER INST PHYSICS
DOI: 10.1063/1.3535983

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Funding

  1. Fundamental Research Funds for the Central Universities [GK200901022]
  2. Innovation Funds of Graduate Programs, SNNU [2009 CXB005]

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Efficient spectral conversion of 325-550 nm light to 570-710 nm light has been demonstrated in LaOF: Eu3+ nanocrystals. When levels above the D-5(0) level of Eu3+ are optically excited, strong emission arising from the D-5(0) level is obtained in the range of 570-710 nm, a highly efficient working range for organic solar cells. The influences of ambient temperature, particle size, dopant concentration, and codoped ions on the fluorescence intensity of Eu3+ are discussed in detail. The photon conversion efficiency can reach 3.91% in LaOF: Eu3+ codoped with Tm3+, if light reflection and scattering effects are ignored (C) 2011 American Institute of Physics. [doi: 10.1063/1.3535983]

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