Spectroscopic properties of Ce3+ doped silicate glasses for near-UV white LEDs and blue laser applications

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2024-11-17 DOI:10.1016/j.optmat.2024.116411

Mahmoud M. Ismail , Ebrahim A. Mahdy , H.A. Abo-Mosallam

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引用次数: 0

Abstract

Using the traditional melt quenching method, a blue-emitting glass Ce³⁺-(Cao-MgO-SiO₂) was developed to be used in White light emitting diodes (W-LEDs). The FTIR and X-ray diffraction were employed to check the structure of the prepared samples. The results indicated that all of the samples were in the amorphous phase, and the tetrahedron SiO₂ is the basic building block in the glass network. The photoluminescence (PL), photoluminescence excitation (PLE), and time-resolved photoluminescence (TRPL) techniques were used to investigate the optical and spectroscopic properties of the synthesized glass. The outcomes revealed that a UV chip can efficiently stimulate the phosphor, causing it to release a powerful, broad blue spectrum with a maximum wavelength at 405 nm, Furthermore, our samples' average lifetimes are two orders of magnitude longer than those of comparable glasses, indicating that the 5d level turned to a meta-stable level. The sample with the optimum Ce³⁺ content (S0.5Ce) displayed a bright blue emission with chromaticity coordinates of (0.186, 0.096) and color purity of 89.36 %. Based on the current research, Ce³⁺-(Cao-MgO-SiO₂) glass appears to be a viable candidate for near-UV chip-based W-LEDs applications.

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用于近紫外白光 LED 和蓝色激光应用的掺杂 Ce3+ 硅酸盐玻璃的光谱特性

利用传统的熔融淬火法，开发了一种用于白光发光二极管（W-LED）的蓝色发光玻璃 Ce3+-（Cao-MgO-SiO2）。傅立叶变换红外光谱和 X 射线衍射被用来检测所制备样品的结构。结果表明，所有样品都处于非晶相，四面体 SiO2 是玻璃网络的基本组成单元。光致发光（PL）、光致发光激发（PLE）和时间分辨光致发光（TRPL）技术用于研究合成玻璃的光学和光谱特性。研究结果表明，紫外芯片可以有效地激发荧光粉，使其释放出强大、宽广的蓝色光谱，最大波长为 405 nm。此外，我们样品的平均寿命比同类玻璃长两个数量级，这表明 5d 级已转为元稳定级。具有最佳 Ce3+ 含量（S0.5Ce）的样品发出明亮的蓝色光，色度坐标为（0.186, 0.096），颜色纯度为 89.36%。根据目前的研究，Ce3+-（Cao-MgO-SiO2）玻璃似乎是近紫外芯片式 W-LED 应用的可行候选材料。

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.