دورية أكاديمية
Effect of annealing temperature and doping concentrations on structure and optical properties of Eu3+-doped TiO2 nanomaterials
| العنوان: | Effect of annealing temperature and doping concentrations on structure and optical properties of Eu3+-doped TiO2 nanomaterials |
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| المؤلفون: | Nguyen Tri Tuan, Tong Thi Hao Tam, Nguyen Tu, Do Quang Trung, Nguyen Van Du, Tran Minh Tien, Vu Thi Hang, Nguyen Trong Tuan, Nguyen Van Quang, Manh Trung Tran |
| المصدر: | Vietnam Journal of Science, Technology and Engineering, Vol 66, Iss 1 (2024) |
| بيانات النشر: | Vietnam Ministry of Science and Technology, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Science |
| مصطلحات موضوعية: | Eu3 doped TiO2, nanomaterials (NMs), photoluminescence, sol-gel method, TiO2, Science |
| الوصف: | In this study, we successfully synthesized europium-doped TiO2(TiO2:Eu3+) nanomaterials (NMs) with crystalline sizes ranging from 6.5 to 71.7 nm through a sol-gel method. Analysis of X-ray diffraction (XRD) patterns and ultraviolet-visible (UV-Vis) spectra indicates that the substitution of smaller-sized Ti4+ ions (0.745 Å) by largersized Eu3+ ions (0.947 Å) was more efficient at higher doping concentrations and annealing temperatures. Photoluminescence (PL) and photoluminescence excitation (PLE) spectra of the synthesized TiO2:7%Eu3+ NMs exhibit a strong red emission band peaking at 613 nm and remarkable absorption in the blue light region centered at 463 nm, making them suitable for use in white light-emitting diode (WLED) applications. Our findings reveal that both annealing temperature and doping concentration significantly influence the structure and properties of these materials. Besides, the research team has seen, under the experimental conditions, the TiO2:7%Eu3+ sample annealed at 800°C exhibits the highest PL intensity. These results underscore the potential of the synthesized TiO2:Eu3+ NMs as red-emitting materials for WLED applications. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2525-2461 2615-9937 |
| Relation: | https://vietnamscience.vjst.vn/index.php/vjste/article/view/1180; https://doaj.org/toc/2525-2461; https://doaj.org/toc/2615-9937 |
| DOI: | 10.31276/VJSTE.66(1).10-15 |
| URL الوصول: | https://doaj.org/article/2e09a2fa327b4820b71abfe105b08324 |
| رقم الأكسشن: | edsdoj.2e09a2fa327b4820b71abfe105b08324 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 25252461 26159937 |
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| DOI: | 10.31276/VJSTE.66(1).10-15 |