التفاصيل البيبلوغرافية
| العنوان: |
Down-conversion luminescence of Yb 3+ in novel Ba 4 Y 3 F 17 :Yb:Ce solid solution by excitation of Ce 3+ in UV spectral range |
| المؤلفون: |
Nizamutdinov A.S., Kuznetsov S.V., Madirov E.I., Voronov V.V., Khadiev A.R., Yapryntsev A.D., Ivanov V.K., Semashko V.V., Fedorov P.P. |
| المصدر: |
SCOPUS09253467-2020-108-SID85087763547 |
| سنة النشر: |
2020 |
| المجموعة: |
Kazan Federal University Digital Repository |
| مصطلحات موضوعية: |
Barium yttrium fluoride, Ce3+, Charge transfer processes, Down-conversion luminescence, Rare earth ions |
| الوصف: |
© 2020 Elsevier B.V. The down-conversion luminescence under UV excitation was demonstrated in single-phase Ba4Y3F17 solid solution nanoparticles codoped with Ce3+/Yb3+. The complex photodynamic processes occurred in the samples including excited state absorption, excitons and color centers formation. The Yb doping suppressed the solarization effect. The efficiency of down-conversion from UV to near IR luminescence of Yb3+ appeared to be high due to Ce4+-Yb2+ charge transfer mechanism responsible for energy transfer between Ce3+ and Yb3+ ions. The direct measurements of down-conversion luminescence quantum yield by means of integrating sphere and calculations of energy transfer efficiency from luminescence spectra data were carried out. The down-conversion luminescence quantum yield reached the maximum value of about 1% for the sample with 0,1 mol.% of Ce3+ and 5,0 mol.% of Yb3+ ions contents, whereas energy transfer coefficient reached its maximum of about 6,3% for 0,05 mol.% of Ce3+ and 5,0 mol.% of Yb3+ ions. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| تدمد: |
0925-3467 |
| Relation: |
Optical Materials; 108; http://dspace.kpfu.ru/xmlui/bitstream/net/161913/-1/SCOPUS09253467-2020-108-SID85087763547-p1.pdf; https://dspace.kpfu.ru/xmlui/handle/net/161913 |
| الاتاحة: |
https://dspace.kpfu.ru/xmlui/handle/net/161913 |
| رقم الانضمام: |
edsbas.8B9EA319 |
| قاعدة البيانات: |
BASE |