Enhanced visible green and 1.5μm radiative emission of Er3+ions in Li2O-PbO-Al2O3-B2O3 glasses for photonic applications

• 作者: Nisha Deopa Mukesh K.Sahu Sumandeep Kaur Aman Prasad K.Swapna Vinay Kumar R.Punia A.S.Rao
• 来源期刊: 稀土学报（英文版）
• 年，卷（期）: 2021,（5）
• 所属期刊栏目: SPECTROSCOPY, LUMINESCENCE AND PHOSPHORS
• 页码范围: 520-525
• 页数: 6页
• 语种: 英文

摘要

A series of Er3+ ions doped lithium lead alumino borate (LiPbAlB) glasses were synthesized via melt quench method and their structural, physical and optical properties were studied. Judd-Ofelt theory in correlation with the emission and absorption profiles was performed for the measurement of various radiative parameters for different transitions of Er3+doped glasses. The as-prepared glasses show deep green (550 nm) as well as NIR (1532 nm) emission at 380 and 980 nm excitation wavelengths, respec-tively. The intensity of emission spectra increases with Er3+ ions concentration up to 1.5 mol％ and beyond quenching is observed. The Dexter theory applied to the emission profiles reveals the interaction between Er3+ions as dipole-dipole in nature. CIE color coordinates are found to fall in the green region of the visible spectrum. It is observed that 1.5 mol％ of Er3+ ions concentration is optimum to exhibit the maximum quantum efficiency, branching ratios, gain bandwidth, emission cross-section, gain cross-section and aptly suitable for visible and NIR photonic applications.