کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9572144 | 1388504 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photoelectron spectroscopy of nanocrystalline anatase TiO2 films
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Photoelectron spectroscopy of nanocrystalline anatase TiO2 films Photoelectron spectroscopy of nanocrystalline anatase TiO2 films](/preview/png/9572144.png)
چکیده انگلیسی
Nanocrystalline TiO2 (anatase) films were prepared using either colloidal suspensions or a sol-gel route. The electronic structure of these films was analyzed using X-ray photoelectron spectroscopy (XPS) and ultraviolet photoelectron spectroscopy (UPS). Apart from pristine films, films containing defects introduced by annealing under ultra-high vacuum conditions or by ion bombardment were investigated. Generally, annealing in the temperature range up to 720Â K results in no significant changes in the XPS and UPS spectra as compared to the pristine state, indicating that the amount of defect formation is too low to be observable by these techniques. On the other hand, ion irradiation causes the appearance of distinct defect states; these could be identified in agreement with previous data from photoemission studies on rutile and anatase single crystals. From UPS, a valence-band width of â¼4.6Â eV was determined for the nanocrystalline anatase films.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 252, Issue 1, 30 September 2005, Pages 85-88
Journal: Applied Surface Science - Volume 252, Issue 1, 30 September 2005, Pages 85-88
نویسندگان
Adam Orendorz, Jens Wüsten, Christiane Ziegler, Hubert Gnaser,