Academic Journal
Band gap tuning of amorphous Al oxides by Zr alloying
| العنوان: | Band gap tuning of amorphous Al oxides by Zr alloying |
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| المؤلفون: | Canulescu, S., Jones, N. C., Borca, C. N., Piamonteze, C., Rechendorff, K., Gudla, V. C., Bordo, K., Nielsen, L. P., Hoffmann, S. V., Almtoft, K. P., Ambat, R., Schou, J. |
| المصدر: | Canulescu , S , Jones , N C , Borca , C N , Piamonteze , C , Rechendorff , K , Gudla , V C , Bordo , K , Nielsen , L P , Hoffmann , S V , Almtoft , K P , Ambat , R & Schou , J 2016 , ' Band gap tuning of amorphous Al oxides by Zr alloying ' , Applied Physics Letters , vol. 109 , no. 9 , 091902 . https://doi.org/10.1063/1.4961941 |
| سنة النشر: | 2016 |
| المجموعة: | The University of Manchester: Research Explorer - Publications |
| الوصف: | The optical band gap and electronic structure of amorphous Al-Zr mixed oxides with Zr content ranging from 4.8 to 21.9% were determined using vacuum ultraviolet and X-ray absorption spectroscopy. The light scattering by the nano-porous structure of alumina at low wavelengths was estimated based on the Mie scattering theory. The dependence of the optical band gap of the Al-Zr mixed oxides on the Zr content deviates from linearity and decreases from 7.3 eV for pure anodized Al 2 O 3 to 6.45 eV for Al-Zr mixed oxides with a Zr content of 21.9%. With increasing Zr content, the conduction band minimum changes non-linearly as well. Fitting of the energy band gap values resulted in a bowing parameter of ∼2 eV. The band gap bowing of the mixed oxides is assigned to the presence of the Zr d-electron states localized below the conduction band minimum of anodized Al 2 O 3 . |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1063/1.4961941 |
| الاتاحة: | https://research.manchester.ac.uk/en/publications/920290a7-a619-42a6-934d-f5319cf23ac2 https://doi.org/10.1063/1.4961941 http://www.scopus.com/inward/record.url?scp=84984919865&partnerID=8YFLogxK |
| Rights: | info:eu-repo/semantics/closedAccess |
| رقم الانضمام: | edsbas.6EFAFA96 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1063/1.4961941 |
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