Eu2+和Mn2+共掺Na2MgAl10O17荧光粉在背光显示中的高效窄带绿色发射

IF 3.2 4区 化学 Q2 CHEMISTRY, ANALYTICAL
Luminescence Pub Date : 2024-12-16 DOI:10.1002/bio.70062
Xiaodeng Wu, Yujun Liang, Zeqian Liu, Gang Chen
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引用次数: 0

摘要

广色域显示因其良好的色彩饱和度而成为新一代显示技术。然而,窄带绿色荧光粉的低量子效率和宽半峰宽度仍然是其开发和应用的主要障碍。本研究以 Mn2+ 为发光中心,在 Na2MgAl10O17(NMAO)基质中构建了高效的 Eu2+ → Mn2+ 能量转移,从而解决了这些难题。在 365 nm LED 芯片的激发下,NMAO:0.15Eu2+, 0.30Mn2+ 荧光体在 513 nm 处呈现单波段发射峰值,半最大全宽(FWHM)仅为 33 nm。此外,在 365 nm 的激发波长下,能量传递效率达到 74%。与 NMAO:0.30Mn2+ 相比,NMAO:0.15Eu2+, 0.30Mn2+ 的强度增加了 5.5 倍,内部量子效率高达 61.82%。以 NMAO:0.15Eu2+、0.30Mn2+、BaMgAl10O17:Eu2+ 和 K2SiF6:Mn4+ 为绿色、蓝色和红色组分的 365 nm LED 芯片成功组装出了 CIE 坐标为 (0.2871, 0.3472)、色域面积为 94% NTSC 的白光 LED 器件。这项工作丰富了掺杂 Mn2+ 的荧光粉的相关含量,并为通过能量转移提高发光性能提供了建设性的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
High Efficiency and Narrow-Band Green Emission in Eu2+ and Mn2+ Co-Doped Na2MgAl10O17 Phosphor for Backlight Display Application

Wide color gamut display has become a new generation of display technology because of its good color saturation. However, the low quantum efficiency and wide half peak width of narrow-band green phosphors are still the main barriers in their development and application. This work addresses these challenges by using Mn2+ as the luminescent center and constructing efficient Eu2+ → Mn2+ energy transfer in Na2MgAl10O17 (NMAO) matrix. The NMAO:0.15Eu2+, 0.30Mn2+ phosphor presents a single-band emission peaking at 513 nm with a full width at half maximum (FWHM) of only 33 nm under the excitation of 365 nm LED chip. In addition, under the excitation wavelength of 365 nm, the energy transfer efficiency reaches 74%. Compared with the NMAO:0.30Mn2+, the intensity of the NMAO:0.15Eu2+, 0.30Mn2+ increases by 5.5 times and the internal quantum efficiency is up to 61.82%. A white LED device with the CIE coordinates of (0.2871, 0.3472) and a color gamut area of 94% NTSC has been assembled successfully by combining 365 nm LED chips with NMAO:0.15Eu2+, 0.30Mn2+, BaMgAl10O17:Eu2+, and K2SiF6:Mn4+ as green, blue, and red component. This work enriches the relevant content of Mn2+-doped phosphors and provides a constructive insight into improving luminescent performance through energy transfer.

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来源期刊
Luminescence
Luminescence 生物-生化与分子生物学
CiteScore
5.10
自引率
13.80%
发文量
248
审稿时长
3.5 months
期刊介绍: Luminescence provides a forum for the publication of original scientific papers, short communications, technical notes and reviews on fundamental and applied aspects of all forms of luminescence, including bioluminescence, chemiluminescence, electrochemiluminescence, sonoluminescence, triboluminescence, fluorescence, time-resolved fluorescence and phosphorescence. Luminescence publishes papers on assays and analytical methods, instrumentation, mechanistic and synthetic studies, basic biology and chemistry. Luminescence also publishes details of forthcoming meetings, information on new products, and book reviews. A special feature of the Journal is surveys of the recent literature on selected topics in luminescence.
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