宽带近红外CaHf4(PO4)6: Cr3+荧光粉在发光二极管中的多功能应用

IF 5.6 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2025-07-01 DOI:10.1016/j.ceramint.2025.03.204

Jianjun Song , Haoyi Wu , Xiaoqi Liu , Shuyu Qin , Haoquan Li , Yahong Jin , Yihua Hu

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引用次数: 0

摘要

宽带近红外（NIR）磷转换发光二极管（pc- led）引起了广泛的研究兴趣。宽带近红外荧光粉的发展仍然受到重大挑战的阻碍，限制了其潜在的应用。本文合成了一种新型宽带近红外发光CaHf4(PO4)6: Cr3+ (CHPO: Cr3+)荧光粉。在472 nm激发下，该荧光粉显示出以925 nm为中心的宽带发射，半峰全宽为181 nm。发射光谱有效地包含了碳氢键的三阶倍频吸收带和氧氢键的二阶倍频吸收带。将CHPO: Cr3+荧光粉与470 nm蓝光LED芯片相结合制备出pc-LED，在120 mA的驱动电流下，实现了25.5 mW的近红外输出功率和6.4%的光电转换效率。最后，在夜视、无损检测和溶液浓度检测方面的研究表明，合成的近红外荧光粉具有推进宽带近红外pc-LED应用的潜力。

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Broadband near-infrared CaHf4(PO4)6: Cr3+ phosphor for multi-functional applications in light-emitting diodes

Broadband near-infrared (NIR) phosphor-converted light-emitting diodes (pc-LEDs) have garnered widespread research interest. The development of broadband NIR phosphors remains hindered by significant challenges, restricting their potential applications. In this work, a novel broadband NIR emitting CaHf₄(PO₄)₆: Cr³⁺ (CHPO: Cr³⁺) phosphor was synthesized. Under 472 nm excitation, the phosphor demonstrated a broadband emission centered at 925 nm with a full width at half maximum (FWHM) of 181 nm. The emission spectrum effectively encompassed the third-order frequency-doubling absorption band of C-H bonds and the second-order frequency-doubling absorption band of O-H bonds. A pc-LED was fabricated by combining CHPO: Cr³⁺ phosphor with a 470 nm blue LED chip, achieving a near-infrared output power of 25.5 mW and an impressive photoelectric conversion efficiency of 6.4 % at a driving current of 120 mA. Finally, studies on night-vision, non-destructive testing, and solution concentration detection demonstrate the potential of the synthesized NIR phosphor for advancing broadband NIR pc-LED applications.

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.