Photoconductivity in sol-gel TiO2 thin films with and without ammonia treatment

• Autorzy: Vomvas A. , Pomoni K. , Trapalis C. , Todorova N.
• Języki publikacji: EN

Abstrakty

EN

Thin TiO2 sol-gel films, with and without ammonia treatment, were prepared using the dip-coating technique and then heat treated at 500 oC. The time dependences of the photoconductivity at various light intensities were studied in vacuum and in air at 27 oC. The transient photoconductivity is very sensitive to the environment and dramatically higher than the dark one for samples both in vacuum and in air. The results are discussed in terms of the competition of the photogeneration, recombination, thermal release, and the influence of NH3 treatment.

Słowa kluczowe

EN

transient photoconductivity; nanocrystalline; TiO2; ammonia treatment; sol-gel method

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2007
• Tom: Vol. 25, No. 3
• Strony: 809--816
• Opis fizyczny: Bibliogr. 10 poz.

Twórcy

autor

Vomvas A.

autor

Pomoni K.

autor

Trapalis C.

autor

Todorova N.

• University of Patras, Physics Department, 26500 Patras, Greece

Bibliografia

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