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 SM ISO690:2012POTLOG, Tamara, DUMITRIU, Petru, DOBROMIR, Marius, MANOLE, Alina Vasilica, LUCA, Dumitru. Nb-doped TiO2 thin films for photovoltaic applications. In: Materials and Design, 2015, vol. 85, pp. 558-563. ISSN 0264-1275. DOI: https://doi.org/10.1016/j.matdes.2015.07.034 |
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  Materials and Design |
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| Volumul 85 / 2015 / ISSN 0264-1275 /ISSNe 1873-4197 | ||||||
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| DOI:https://doi.org/10.1016/j.matdes.2015.07.034 | ||||||
| Pag. 558-563 | ||||||
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Polycrystalline titania and Nb:TiO2 thin films were deposited by RF magnetron sputtering. The influence of post-deposition annealing in vacuum and hydrogen atmosphere on the structure, morphology, oxidation states and optical properties was studied by X-ray diffraction, atomic force microscopy, XPS and UV-VIS spectroscopy. The heat treatment of titanium dioxide thin films in vacuum and H2 atmosphere induces structural and morphological changes. The band gap narrowing was observed for the transparent as-deposited Nb:TiO2 films, while annealing at 420°C in H2 atmosphere resulted in an enhancement of the electrical conductivity. Further on, TiO2/p-CdTe photovoltaic devices with efficiency of 1.8% were fabricated and their characteristic 'enhancement' is discussed. |
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| Cuvinte-cheie CdTe, Nb-doped TiO2 thin films, Photovoltaic device |
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