تقرير
Nonstructural acousto-injection luminescence in metalized lithium niobate wafers
| العنوان: | Nonstructural acousto-injection luminescence in metalized lithium niobate wafers |
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| المؤلفون: | Ostrovskii, Igor, Korotchenkov, Oleg, Borovoy, Nikolaj, Nadtochiy, Andriy, Chupryna, Roman, Chatterjee, Chandrima |
| سنة النشر: | 2016 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Materials Science, 00Bxx |
| الوصف: | We report the observations of nonstructural acousto-injection luminescence (NAIL) from tantalized LiNbO3 wafers. The samples under study are the X cut or Y cut wafers with the silver paste electrodes on opposite surfaces. The thickness is 1 to 2 mm and other linear dimensions are in the range of 2 to 25 mm. Experiments are done at room temperature in the MHz-frequency range. Mainly the fundamental shear ultrasound modes are excited in the samples. Experimentally are measured the spectra of NAIL, photo-luminescence spectra, acousto-electric properties, X Ray diffraction under NAIL. The NAIL and other effects appear above certain threshold amplitude of the acoustical strain that is about 10E-5. The involvement of the microstructural non-uniformity in the effects observed is experimentally identified by the photo-luminescence of point defects taken from different micro-regions of the samples. The data are explained in terms of the considerable acoustic stresses and piezoelectric fields that are capable injecting charge carriers from the metal contacts into a crystal. Comment: 12 pages, 7 figures, 171 Meeting of the American Acoustical Society (May,2016) |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1121/1.4950367 |
| URL الوصول: | http://arxiv.org/abs/1610.06896 |
| رقم الأكسشن: | edsarx.1610.06896 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1121/1.4950367 |
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