Publication:
Luminescence properties and energy transfer processes in Ce3+-Sm3+ co-doped calcium aluminosilicate materials
Luminescence properties and energy transfer processes in Ce3+-Sm3+ co-doped calcium aluminosilicate materials
| datacite.subject.fos | oecd::Natural sciences | |
| dc.contributor.author | Nguyen Manh Son | |
| dc.contributor.author | Do Thanh Tien | |
| dc.contributor.author | Nguyen Thi Quynh Lien | |
| dc.contributor.author | Dinh Thanh Khan | |
| dc.contributor.author | Le Thi Thanh Hiep | |
| dc.contributor.author | Ho Van Tuyen | |
| dc.date.accessioned | 2022-11-09T08:21:23Z | |
| dc.date.available | 2022-11-09T08:21:23Z | |
| dc.date.issued | 2022 | |
| dc.description.abstract | Ce3+/Sm3+ co-doped calcium aluminosilicate (CA: Ca2Al2SiO7) phosphors were successfully synthesized using the well-known method based on solid-state reaction method at elevated temperature-1280 °C. Key parameters including the structural and luminescent properties of the prepared phosphors are examined in detail via the X-ray diffraction (XRD), a scanning electron microscope (SEM) image, luminescence decay, photoluminescence and photoluminescence excitation spectra. XRD patterns indicated that the obtained phosphors reach a single phase of Ca2Al2SiO7 with tetragonal structure. Fluorescence results of CA:Ce3+ and CA:Sm3+ phosphors show the emission band of Ce3+ overlaps well the strongest excitation peak of Sm3+ lead to the energy transfer (ET) process from Ce3+ to Sm3+ when they are co-doped in CA material. In the co-doped sample CA:Ce3+,Sm3+, the Ce3+ sensitizer enriches the intense red emission of Sm3+ activator regarding the transfer of its part excitation energy to Sm3+ ions. Through analysis of luminescence behaviors, the mechanism of the ET process from Ce3+ to Sm3+ ions in CA phosphors have been determined to be the dipole-dipole interaction by applying the Dexter model. The efficiency (ηET) of energy transfer from Ce3+ ions to Sm3+ ions increase with the increase of Sm3+ concentration. The CIE coordinates of all the prepared samples were also demonstrated under different excitation wavelengths to estimate the emission feature of the prepared phosphors. | |
| dc.identifier.doi | 10.1016/j.optmat.2021.111864 | |
| dc.identifier.uri | http://repository.vlu.edu.vn:443/handle/123456789/1077 | |
| dc.language.iso | en_US | |
| dc.relation.ispartof | Optical Materials | |
| dc.relation.issn | 0925-3467 | |
| dc.subject | Calcium aluminosilicate | |
| dc.subject | Samarium | |
| dc.subject | Cerium | |
| dc.subject | Energy transfer | |
| dc.subject | Dipole-dipole interaction | |
| dc.title | Luminescence properties and energy transfer processes in Ce3+-Sm3+ co-doped calcium aluminosilicate materials | |
| dc.type | journal-article | |
| dspace.entity.type | Publication | |
| oaire.citation.volume | 123 |