Tunable green-blue luminescence of Dy2O3 doped borosilicate glasses for optoelectronic devices

IF 4 2区化学 Q2 CHEMISTRY, PHYSICAL Journal of Molecular Structure Pub Date : 2024-11-06 DOI:10.1016/j.molstruc.2024.140574

Jaspreet Kaur , Santosh Kumar , Isha Mudahar , K. Singh

引用次数: 0

Abstract

The optical-structural correlated properties of the

40 B_{2} O_{3} - 40 S i O_{2} - 10 V_{2} O_{5} - (10 - x) F e_{2} O_{3} - x D y_{2} O_{3}

system, where 2, 4, and 6 mol%, were studied. Differential scanning calorimetry (DSC) and X-ray diffraction (XRD) confirmed the glassy and amorphous nature of the samples. Adding

D y_{2} O_{3}

promoted the formation of bridging oxygens (upto 4 mol%) by converting

B O_{3}

into

B O_{4}

units, however, above 4 mol%

D y_{2} O_{3}

act as a modifier. The optical band gap increased from 3.70 to 4.01 eV, while the refractive index decreased from 2.23 to 2.16. The CIE coordinates indicated that the emission spectra fall within the green-blue region. The as-prepared sample exhibited the highest correlated colour temperature value above 5000 K, suggesting its suitability for cool light-emitting diodes sensitive to human vision. These glasses have potential applications in light-emitting diodes and optoelectronic devices.

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用于光电设备的掺杂 Dy2O3 的硼硅玻璃的可调谐蓝绿色荧光

研究了 40B2O3-40SiO2-10V2O5-(10-x)Fe2O3-xDy2O3（其中 2、4 和 6 mol%）体系的光学结构相关特性。差示扫描量热法（DSC）和 X 射线衍射法（XRD）证实了样品的玻璃和无定形性质。添加 Dy2O3 可将 BO3 转化为 BO4 单元，从而促进桥接氧的形成（最多 4 摩尔%），然而，超过 4 摩尔% 时，Dy2O3 就会起修饰作用。光带隙从 3.70 eV 增加到 4.01 eV，折射率从 2.23 降低到 2.16。CIE 坐标显示，发射光谱属于绿蓝色区域。制备的样品显示出高于 5000 K 的最高相关色温值，这表明它适用于对人类视觉敏感的冷光发光二极管。这些玻璃具有在发光二极管和光电设备中应用的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Molecular Structure 化学-物理化学

CiteScore

7.10

自引率

15.80%

发文量

2384

审稿时长

45 days

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