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5% SnO 2 doped tantalum oxide (Ta 2 O 5 ) films are deposited on quartz substrates at different substrate temperatures of 300K, 773K, 873K and 973K using pulsed laser deposition in an oxygen ambient of 0.002 mbar. Undoped Ta 2 O 5 films are also deposited on quartz substrates kept at substrate temperature 973K under the same oxygen ambient using PLD. The films...
The optical properties of ZnPc–CdS composite thin films have been measured. The composite layers were prepared by vacuum evaporation. The electrical conduction mechanism prevailing in these junctions was of Poole–Frenkel type and the activation energy was found to have a linear dependence with applied field. The maximum photoconductivity occurred at an energy gap around 1.5 to 1.7eV. The photosensitivity...
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