Judd–Ofelt Analysis of Dy3+-Activated Aluminosilicate Glasses Prepared by Sol–Gel Method

• Published in: Journal of electronic materials Vol. 47; no. 4; pp. 2316 - 2321
• Main Authors: Sengthong, Buonyavong, Van Tuyen, Ho, An, Nguyen Thi Thai, Van Do, Phan, Hai, Nguyen Thi Quy, Chau, Pham Thi Minh, Quang, Vu Xuan
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.04.2018; Springer Nature B.V
• Subjects: Absorption spectra; Characterization and Evaluation of Materials; Chemistry and Materials Science; Dysprosium; Electronics and Microelectronics; Instrumentation; Ion concentration; Materials research; Materials Science; Optical and Electronic Materials; Oscillator strengths; Photoluminescence; Sol-gel processes; Solid State Physics; Transition probabilities; Aluminosilicate glasses; sol–gel method; JO parameters; Dy
• ISSN: 0361-5235; 1543-186X
• DOI: 10.1007/s11664-017-6056-x

Aluminosilicate (AS) glasses doped with different Dy 3+ concentrations were synthesized via sol–gel method. Absorption, photoluminescence spectra and lifetime of this material have been studied. From analytical results of absorption spectra, the Judd–Ofelt (JO) parameters of prepared samples have been determined. These JO parameters combined with photoluminescence spectra have been used to evaluate transition probabilities ( A R ), branching ratios ( β ) and the calculated oscillator strengths of AS:Dy 3+ glasses. The radiative branching ratio of 4 F 9/2  →  6 H 13/2 transition has a minimum value at 62.2% for β R which predicts that this transition in AS:Dy 3+ glasses can give rise to lasing action. JO parameters show that the Ω 2 increases with the increasing of Dy 3+ ion concentration due to the increased polarizability of the average coordination medium and decreased average symmetry.