Dy3+-doped P2O5–Al2O3–K2O–CaF2–LiF glasses: thermal, spectroluminescence and photometric properties
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) te...
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oai:http:--repository.vlu.edu.vn-:123456789-3902022-10-31T13:20:54Z Dy3+-doped P2O5–Al2O3–K2O–CaF2–LiF glasses: thermal, spectroluminescence and photometric properties K Kiran Kumar Ramachari Doddoji V B Sreedhar Nguyen Thi Quynh Lien Ho Van Tuyen Vasudeva Reddy Minnam Reddy Dy3?:fluorophosphate glasses DTA bandgap energies photoluminescence decay photometric parameters 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. 2022-10-31T06:20:53Z 2022-10-31T06:20:53Z 2022 journal-article http://repository.vlu.edu.vn:443/handle/123456789/390 10.1007/s12034-021-02631-y en_US Bulletin of Materials Science 0250-4707 0973-7669 application/pdf |
| institution |
Trường Đại học Văn Lang |
| collection |
DSpaceVLU |
| language |
en_US |
| topic |
Dy3?:fluorophosphate glasses DTA bandgap energies photoluminescence decay photometric parameters |
| spellingShingle |
Dy3?:fluorophosphate glasses DTA bandgap energies photoluminescence decay photometric parameters K Kiran Kumar Ramachari Doddoji V B Sreedhar Nguyen Thi Quynh Lien Ho Van Tuyen Vasudeva Reddy Minnam Reddy Dy3+-doped P2O5–Al2O3–K2O–CaF2–LiF glasses: thermal, spectroluminescence and photometric properties |
| description |
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. |
| format |
journal-article |
| author |
K Kiran Kumar Ramachari Doddoji V B Sreedhar Nguyen Thi Quynh Lien Ho Van Tuyen Vasudeva Reddy Minnam Reddy |
| author_facet |
K Kiran Kumar Ramachari Doddoji V B Sreedhar Nguyen Thi Quynh Lien Ho Van Tuyen Vasudeva Reddy Minnam Reddy |
| author_sort |
K Kiran Kumar |
| title |
Dy3+-doped P2O5–Al2O3–K2O–CaF2–LiF glasses: thermal, spectroluminescence and photometric properties |
| title_short |
Dy3+-doped P2O5–Al2O3–K2O–CaF2–LiF glasses: thermal, spectroluminescence and photometric properties |
| title_full |
Dy3+-doped P2O5–Al2O3–K2O–CaF2–LiF glasses: thermal, spectroluminescence and photometric properties |
| title_fullStr |
Dy3+-doped P2O5–Al2O3–K2O–CaF2–LiF glasses: thermal, spectroluminescence and photometric properties |
| title_full_unstemmed |
Dy3+-doped P2O5–Al2O3–K2O–CaF2–LiF glasses: thermal, spectroluminescence and photometric properties |
| title_sort |
dy3+-doped p2o5–al2o3–k2o–caf2–lif glasses: thermal, spectroluminescence and photometric properties |
| publishDate |
2022 |
| url |
http://repository.vlu.edu.vn:443/handle/123456789/390 |
| work_keys_str_mv |
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