کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1674729 1008969 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation of strain-included rutile titanium oxide thin films and influence of the strain upon optical properties
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Preparation of strain-included rutile titanium oxide thin films and influence of the strain upon optical properties
چکیده انگلیسی

Rutile type titanium dioxide (TiO2) thin films are prepared by pulse laser deposition (PLD) with controlled oxygen pressure. Transmission electron microscopy (TEM) analysis clarified that crystalline structures, surface structures and electric states of the TiO2 films almost correspond to those of the bulk rutile. We observed crystalline domain including strain in the PLD film. The strain of the TiO2 film was measured by nano-beam diffraction. The strain-included domains affected properties of the film as optical absorption. The obtained optical band gap energy value was 3.30 eV, which was larger than that of bulk. TEM results such as crystalline grain sizes and distribution were used to consider quantum size effect in order to explain the larger band gap value. Moreover the influence of strain in rutile crystalline grains upon optical properties was suggested in the present study. The difference of band gap energy between experimental and theoretically calculated ones was considered to come from the strain effects.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 515, Issue 5, 22 January 2007, Pages 3096–3101
نویسندگان
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