Quantum yield, energy transfer, and x-ray induced study of Sm3+ ions doped oxide glasses for intense orange-red photo-emitting optoelectronic device applications

IF 2 3区化学 Q4 CHEMISTRY, PHYSICAL Chemical Physics Pub Date : 2024-11-12 DOI:10.1016/j.chemphys.2024.112528

R. Rajaramakrishna , Nikonorov Nikolay , N. Wantana , H.J. Kim , S. Kothan , N. Intachai , W. Busayaporn , J. Kaewkhao , E.V. Parfenova , A.S. Aleksandrovsky

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Abstract

The work elucidates detailed analysis of X-ray near edge structure of Gd³⁺ ions using Synchrotron studies and deciphers the energy transfer mechanism involved in the stoichiometric ratio of (79-x)B₂O₃ + 10ZnO + 10BaO + xGd₂O₃ + 1Sm₂O₃ (BZBGS; x = 0, 5, 10, 15, 20 mol.%) glasses. A detailed analysis of the glasses’ optical, structural, and luminescence properties were instigated to understand light emitting and scintillating behaviour. The oxidation state of Gd atom inside the glass found to be + 3. Stimulated emission cross section, radiative transition probability and branching of the metastable state of rare-earth ions were evaluated using Judd-Ofelt model and compared with other reported literature. Photo-Emission spectra were monitored at the UV-C band and X-rays. Luminescence was analysed with various excitation wavelengths and sources. Photoluminescence quantum yield show more than 22 % efficiency and show more than 15 % compared with other reported glasses. Luminescence intensity ratio was analysed and found that the Sm³⁺-ions do not occupy the inversion-symmetry which enhances the luminescence intensity in the present glass system. The CIE and CCT values were evaluated and discussed.

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掺杂 Sm3+ 离子的氧化物玻璃的量子产率、能量转移和 X 射线诱导研究，用于强橙红色发光光电器件应用

该研究利用同步加速器研究对 Gd3+ 离子的 X 射线近缘结构进行了详细分析，并解密了 (79-x)B2O3 + 10ZnO + 10BaO + xGd2O3 + 1Sm2O3 (BZBGS; x = 0, 5, 10, 15, 20 mol.%) 玻璃的化学计量比所涉及的能量传递机制。为了了解玻璃的发光和闪烁特性，我们对玻璃的光学、结构和发光特性进行了详细分析。发现玻璃内部钆原子的氧化态为 + 3。利用 Judd-Ofelt 模型评估了稀土离子的受激发射截面、辐射转变概率和瞬态分支，并与其他文献报告进行了比较。在 UV-C 波段和 X 射线下对光发射光谱进行了监测。使用不同的激发波长和激发源对发光进行了分析。与其他报道的玻璃相比，光量子产率超过 22%，效率超过 15%。对发光强度比进行分析后发现，Sm3+ 离子不占据反转对称性，这增强了本玻璃体系的发光强度。对 CIE 值和 CCT 值进行了评估和讨论。

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来源期刊

Chemical Physics 化学-物理：原子、分子和化学物理

CiteScore

4.60

自引率

4.30%

发文量

278

审稿时长

39 days

期刊介绍： Chemical Physics publishes experimental and theoretical papers on all aspects of chemical physics. In this journal, experiments are related to theory, and in turn theoretical papers are related to present or future experiments. Subjects covered include: spectroscopy and molecular structure, interacting systems, relaxation phenomena, biological systems, materials, fundamental problems in molecular reactivity, molecular quantum theory and statistical mechanics. Computational chemistry studies of routine character are not appropriate for this journal.