Publication:
Luminescence and Thermal-Quenching Properties of Red-Emitting Ca2Al2SiO7:Sm3+ Phosphors
Luminescence and Thermal-Quenching Properties of Red-Emitting Ca2Al2SiO7:Sm3+ Phosphors
| 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 | Vu Xuan Quang | |
| dc.contributor.author | Nguyen Ngoc Trac | |
| dc.contributor.author | Tran Thi Hong | |
| dc.contributor.author | Ho Van Tuyen | |
| dc.date.accessioned | 2022-11-02T03:03:01Z | |
| dc.date.available | 2022-11-02T03:03:01Z | |
| dc.date.issued | 2020 | |
| dc.description.abstract | Ca2Al2SiO7:x.Sm3+ (x = 0.5, 1.0, 1.5, 2.0, 2.5, and 3.5 mol.%) (CAS:x.Sm3+) phosphors were synthesized by a solid-state reaction technique. The structure, photoluminescence properties and thermal stability of phosphors were investigated in detail. Results of X-ray diffraction show that CAS:x.Sm3+ materials have a single-phased tetragonal structure, and an expansion of the unit cell relates to the increasing of Sm3+ concentration. Photoluminescence study displayed that the CAS:x.Sm3+ phosphors reach the highest emission intensity at 1.5 mol.% Sm3+ and achieved the luminescence quenching phenomenon a higher concentration. The dominant interaction mechanism of the concentration quenching process is determined due to the dipole–dipole interaction, and the critical transfer distance (Rc) is 26.7 A ° . The temperature dependence of photoluminescence spectra indicates that the Ca2Al2SiO7:Sm3+ (1.5 mol.%) phosphor possess good thermal stability, and that the activation energy is around 0.12 eV (968 cm 1). Several characteristic vibrations in the 200–1000-cm 1 region were observed by Raman spectra, and the color chromaticity coordinates of the samples were also calculated and discussed. | |
| dc.identifier.doi | 10.1007/s11664-020-08086-x | |
| dc.identifier.uri | http://repository.vlu.edu.vn:443/handle/123456789/646 | |
| dc.language.iso | en_US | |
| dc.relation.ispartof | Journal of Electronic Materials | |
| dc.relation.issn | 0361-5235 | |
| dc.relation.issn | 1543-186X | |
| dc.subject | "Ca2Al2SiO7 | |
| dc.subject | samarium | |
| dc.subject | luminescent materials | |
| dc.subject | concentration quenching" | |
| dc.title | Luminescence and Thermal-Quenching Properties of Red-Emitting Ca2Al2SiO7:Sm3+ Phosphors | |
| dc.type | journal-article | |
| dspace.entity.type | Publication | |
| oaire.citation.issue | 6 | |
| oaire.citation.volume | 49 |