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The structural and optical properties of films of CaTiO 3 :Pr 3+ deposited by a spray method are investigated. These films show lower afterglow efficiency than the powdered sample of same composition. To understand this behavior, the possible trapping centers and afterglow mechanisms in CaTiO 3 :Pr 3+ are revisited. It is concluded that the lower afterglow of films...
Transparent films of CaTiO 3 :Pr 3+ were deposited by radio frequency sputtering and annealed in air at temperatures ranging from 700 to 1000 °C. The chemical, structural and optical characteristics of the films were evaluated. The films of typically ˜ 200 nm thick consist of grains in the nanometer scale with sizes controlled by thermal treatment. They show the typical red emission...
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