Cr3+ and Nd3+ co-activated garnet phosphor for NIR super broadband pc-LED application

被引：20

作者：

He, Shuai ^{[1
,4
]}

Zhang, Liangliang ^{[1
]}

Zhang, Jingnan ^{[1
,2
]}

Hao, Zhendong ^{[1
]}

Wu, Hao ^{[1
]}

Wu, Huajun ^{[1
]}

Luo, Yongshi ^{[1
]}

Pan, Guohui ^{[1
]}

Liu, Feng ^{[3
]}

Zhang, Jiahua ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, State Key Lab Luminescence & Applicat, 3888 Eastern South Lake Rd, Changchun 130033, Peoples R China

[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China

[3] Northeast Normal Univ, Key Lab UV Emitting Mat & Technol, Minist Educ, Changchun 130024, Peoples R China

[4] Inner Mongolia Univ Sci & Technol, Sch Sci, Baotou 014010, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2022年 / 151卷

基金：

中国国家自然科学基金;

关键词：

Broadband NIR phosphor; NIR pc-LEDs; Spectral complementation; ENERGY-TRANSFER; LIGHT-SOURCES; SPECTROSCOPY; EMISSION; STATE; YB;

D O I：

10.1016/j.materresbull.2022.111797

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Near-infrared phosphor converted light emitting diodes (NIR pc-LEDs), as a compact light source, play a constructive role in wearable optical biosensing devices. In order to detect the properties of different substances, the NIR emission should be as wide as possible. The typical strategy for broadening the band is the superposition emission of Cr3+ and Yb3+, the bandwidth of which is 300-320 nm, and it needs to be further broadened. In this paper, NIR Ca2LuZr2Al3O12 garnet phosphor, co-activated by Cr3+ and Nd3+, is prepared. The emission quantum efficiencies of Nd3+ at 900 nm and 1060 nm are close to 100%, and the emission band is complementary to that of Yb3+ at 1030 nm. An efficient super broadband NIR pc-LEDs (47.6 mW@100 mA), with the bandwidth of 350 nm, are achieved. The bandwidth and the efficiency of the pc-LEDs are improved greatly, compared with other reported ones.

引用

页数：7

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