Publication:
Dy3+-doped P2O5–Al2O3–K2O–CaF2–LiF glasses: thermal, spectroluminescence and photometric properties
Dy3+-doped P2O5–Al2O3–K2O–CaF2–LiF glasses: thermal, spectroluminescence and photometric properties
| datacite.subject.fos | oecd::Engineering and technology | |
| dc.contributor.author | K Kiran Kumar | |
| dc.contributor.author | Ramachari Doddoji | |
| dc.contributor.author | V B Sreedhar | |
| dc.contributor.author | Nguyen Thi Quynh Lien | |
| dc.contributor.author | Ho Van Tuyen | |
| dc.contributor.author | Vasudeva Reddy Minnam Reddy | |
| dc.date.accessioned | 2022-10-25T07:09:50Z | |
| dc.date.available | 2022-10-25T07:09:50Z | |
| dc.date.issued | 2022 | |
| dc.description.abstract | Fluorophosphate (PAKCLf: P2O5-Al2O3-K2O-CaF2-LiF) glasses with Dy3? concentration of 0.01, 0.05, 0.1, 0.5, 1.0, 2.0 and 3.0 mol% were fabricated by pouring the melt and sudden quenching process. The glass stability factor of 106 C was calculated by glass transition (563 C) and crystallite (669 C) temperatures. The energy bandgap (Eg) of Dy3?:PAKCLf glasses is calculated for (ahm)2 (direct) and (ahm)1/2 (indirect) allowed transitions. From optical absorption, the oscillator strength and spectroscopic intensity (X2,4,6) parameters by performing Judd–Ofelt calculations were estimated to evaluate the radiative transition properties of 4F9/2 level in Dy3? ions. The emission spectra consist of two intense bands in blue (485 nm: 4F9/2?6H15/2) and yellow (576 nm: 4F9/2?6H13/2) regions by stimulating at 349 nm. The decay curves demonstrate the non-exponential nature from 0.5 to 3.0 mol% of Dy3? and fitted well to the Inokuti–Hirayama model. The findings of stimulated emission cross-section (5.20 9 10–21 cm2), optical gain (29.59 9 10–25 cm2s), and quantum efficiency (97%) for Dy3?:PAKCLf glasses could be potentially utilized as optical devices. The photometric parameters like CIE colour coordinates and correlated colour temperatures (CCT:6300-6900 K) of Dy3?:PAKCLf glasses reveal the application of white light-emitting diodes. | |
| dc.identifier.doi | 10.1007/s12034-021-02631-y | |
| dc.identifier.uri | http://repository.vlu.edu.vn:443/handle/123456789/319 | |
| dc.language.iso | en_US | |
| dc.relation.ispartof | Bulletin of Materials Science | |
| dc.relation.issn | 0250-4707 | |
| dc.relation.issn | 0973-7669 | |
| dc.subject | Dy3?:fluorophosphate glasses | |
| dc.subject | DTA | |
| dc.subject | bandgap energies | |
| dc.subject | photoluminescence decay | |
| dc.subject | photometric parameters | |
| dc.title | Dy3+-doped P2O5–Al2O3–K2O–CaF2–LiF glasses: thermal, spectroluminescence and photometric properties | |
| dc.type | journal-article | |
| dspace.entity.type | Publication | |
| oaire.citation.issue | 1 | |
| oaire.citation.volume | 45 |