TiO<inf>2</inf> thin film deposition from solution using microwave heating

Elena Vigil, Lahcen Saadoun, José A. Ayllón, Xavier Domènech, Inti Zumeta, Rafael Rodríguez-Clemente

Research output: Contribution to journalArticleResearchpeer-review

47 Citations (Scopus)

Abstract

A new method has been devised for the deposition of TiO2 thin films on conducting glass using a microwave reactor. The substrates are immersed in a diluted homogeneous aqueous solution which was prepared by mixing equal volumes of a fluorine-complexed titanium(IV) solution ([Ti] = 3.4×10-2M) and 6.8×10-2 M boric acid solution. Low microwave power and short deposition time have been used. The TiO2 layers obtained are well-adhered, homogenous, with good specularity and colored by interference of reflected light. Their thickness is in the range of 100-500 nm. SEM experiments denote that films are formed by small crystallites having linear dimensions under 100 nm. Crystal dimensions depend on microwave power and deposition time. The layers show a high degree of crystallinity and the observed crystal phase is anatase. Microwave heating has proved to be an efficient and inexpensive method for solution growth of TiO2 films; it should also be of importance for other materials layers grown from solution.
Original languageEnglish
Pages (from-to)12-18
JournalThin Solid Films
Volume365
Issue number1
DOIs
Publication statusPublished - 3 Apr 2000

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