A narrow band blue phosphor NaBa4Al2B8O18Cl3:Eu2+ for white light emitting diodes

IF 3.5 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Dalton Transactions Pub Date : 2025-01-06 DOI:10.1039/d4dt02858a

Boyu Pan, Yao Wang, Bing Xu, Kangkang Wang, Liang Zhang, Zhixian He, Shengnan Zhang

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引用次数: 0

Abstract

Exploring new photoexcited phosphors has attracted attention for improving the performance of white LEDs. Here, an NaBa₄Al₂B₈O₁₈Cl₃:xEu²⁺ phosphor with high color purity (94.11%) has been synthesized. The NBAC:0.035Eu²⁺ phosphor exhibits excellent color stability when the temperature increases from 298 K to 473 K. Impressively, the NBAC:0.035Eu²⁺ blue phosphor still exhibits excellent chemical stability after being immersed in water for 25 days. In addition, Eu²⁺ ions preferentially occupy the Na/Ba sites of the host structure, which contributes to the superior photoluminescence performance. Furthermore, near-ultraviolet (n-UV) pumped phosphor-converted white light-emitting diodes (pc-WLEDs) have been fabricated using the NBAC:0.035Eu²⁺ blue phosphor, green commercial phosphor (Sr,Ba)₂SiO₄:Eu²⁺ and red commercial phosphor (Ca,Sr)AlSiN₃:Eu²⁺. The resulting device shows uniformly distributed warm white light with a color-rendering index (R_a) of 89.2 and a low correlated color temperature (CCT) of 4153 K. A series of excellent characteristics of NBAC:0.035Eu²⁺, including high-performance optical characteristics, a simple synthesis process and low economic cost, support its great application potential for use in warm white LED lighting systems.

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来源期刊

Dalton Transactions 化学-无机化学与核化学

CiteScore

6.60

自引率

7.50%

发文量

1832

审稿时长

1.5 months

期刊介绍： Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.