化工新型材料

化工新型材料 ›› 2025, Vol. 53 ›› Issue (3) : 132-136. DOI: 10.19817/j.cnki.issn1006-3536.2025.03.022

新材料与新技术

近紫外白光LED用YVO₄基红色荧光粉的合成与性能研究

唐鹿

作者信息 +

Synthesis and properties of YVO₄-based red phosphors for near-ultraviolet white LED

Tang Lu

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文章历史 +

Received		Published
2024-02-22		2025-03-20
Issue Date	Revised Date
2025-03-19	2024-02-22

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摘要

YVO₄晶体是一种优异的无机基质材料,能高效地吸收短波长的紫外光能量并有效地传递给Eu³⁺,因而YVO₄∶Eu³⁺荧光粉在短波长的紫外光激发下具有良好的红光发射性能。但YVO₄∶Eu³⁺荧光粉不能有效地被长波长的近紫外光激发。为了获得能被近紫外芯片(350～410nm)有效激发的YVO₄基红色荧光粉,以有强近紫外光吸收能力的2-噻吩甲酰三氟丙酮(TTA)有机配体为Eu³⁺的敏化剂,通过溶剂热和离子交换二步实验法,成功地合成了YVO₄∶Eu³⁺∶Eu³⁺-TTA荧光粉。实验表明,在TTA有机配体的敏化作用下,YVO₄∶Eu³⁺∶Eu³⁺-TTA荧光粉的激发峰被明显的宽化,使得350～410nm的近紫外光能被有效地吸收。在373nm的近紫外光激发下,YVO₄∶Eu³⁺∶Eu³⁺-TTA荧光粉实现了明亮的红光发射。YVO₄∶Eu³⁺∶Eu³⁺-TTA荧光粉具有良好的近紫外激发性能和红光发射性能,是一种有望应用于近紫外白光LED的红色荧光粉。

Abstract

YVO₄ crystals are a kind of excellent inorganic matrix materials that can efficiently absorb short-wavelength ultraviolet light energy and effectively transfer it to Eu³⁺,so YVO₄∶Eu³⁺ phosphors have good red emission performance under short-wavelength ultraviolet excitation.However,YVO₄∶Eu³⁺ phosphors cannot be efficiently excited by long-wavelength near-ultraviolet light.In order to obtain YVO₄-based red phosphors that can be effectively excited by near-ultraviolet chip (350～410nm),YVO₄∶Eu³⁺∶Eu³⁺-TTA phosphors were synthesized by solvothermal and ions exchange two-step experimental methods using 2-thenoyltrifluoroacetone(TTA) organic ligand with strong near-ultraviolet light absorption ability as the sensitizer of Eu³⁺.The results showed that the excitation peaks of YVO₄∶Eu³⁺∶Eu³⁺-TTA phosphors were obviously widened under the sensitization of TTA organic ligand,which enabled the near-ultraviolet light of 350～410nm to be effectively absorbed.The YVO₄∶Eu³⁺∶Eu³⁺-TTA phosphors achieved bright red emission under the excitation of near-ultraviolet light at 373nm.The YVO₄∶Eu³⁺∶Eu³⁺-TTA phosphors demonstrated excellent near-ultraviolet excitation and red emission properties,making them promising red phosphors for near-ultraviolet white LED.

关键词

白光LED / 近紫外光 / YVO₄∶Eu³⁺ / 红色荧光粉 / TTA有机配体

Key words

white LED / near-ultraviolet light / YVO₄∶Eu³⁺ / red phosphors / TTA organic ligand

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近紫外白光LED用YVO₄基红色荧光粉的合成与性能研究[J]. 化工新型材料, 2025, 53(3): 132-136 DOI:10.19817/j.cnki.issn1006-3536.2025.03.022

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