Controlled surface distribution and luminescence of YVO4:Eu3+ nanophosphor layers | Zendy

Alima Naim Khan | Zendy; D. Haranath | Zendy; Ravi Shanker | Zendy; Sukhvir Singh | Zendy; S. Chawla | Zendy; Viresh Dutta | Zendy

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Controlled surface distribution and luminescence of YVO4:Eu3+ nanophosphor layers

Author(s) -

Alima Naim Khan,

D. Haranath,

Ravi Shanker,

Sukhvir Singh,

S. Chawla,

Viresh Dutta

Publication year - 2008

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.2973163

Subject(s) - photoluminescence , nanoclusters , materials science , blueshift , luminescence , quantum dot , annealing (glass) , coalescence (physics) , optoelectronics , transmittance , homogeneity (statistics) , analytical chemistry (journal) , molecular physics , nanotechnology , chemistry , composite material , physics , chromatography , astrobiology , statistics , mathematics

A method of dispersing YVO4:Eu quantum dots (QDs) as uniform two-dimensional (2D) layers with a high degree of homogeneity is presented. Annealing at 773 K resulted in coalescence of QDs to form nanoclusters with size of ∼ 25 nm with an improved photoluminescence and ∼ 80% transmittance at 800 nm. An efficient 5D0-7F2 transition and lifetimes of ∼ 1038 μs for the characteristic Eu3+ emission were observed. The absorption and emission peaks showed a slight blueshift, due to quantum-size effect, as compared to that for the bulk counterpart. Our method of 2D layer deposition is useful to enhance spectral response of the solar cells

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