An excellent cyan-emitting orthosilicate phosphor for NUV-pumped white LED application

被引：230

作者：

Liu, Yongfu ^{[1
]}

Silver, Jack ^{[2
]}

Xie, Rong-Jun ^{[3
]}

Zhang, Jiahua ^{[4
]}

Xu, Huawei ^{[5
]}

Shao, Hezhu ^{[1
]}

Jiang, Jun ^{[1
]}

Jiang, Haochuan ^{[1
]}

机构：

[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, 1219 Western Zhongguan Rd, Ningbo 315201, Zhejiang, Peoples R China

[2] Brunel Univ London, Ctr Phosphor & Display Mat, Wolfson Ctr Mat Proc, Kingston Lane Uxbridge Middlesex, London UB8 3PH, England

[3] NIMS, Sialon Grp, Namiki 1-1 Tsukuba, Ibaraki 3050044, Japan

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

[5] Fifth Res Inst MIIT, Qual Inspect & Testing Ctr, 110 Dongguan Zhuang Rd, Guangzhou 510610, Guangdong, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2017年 / 5卷 / 47期

基金：

中国国家自然科学基金; 英国工程与自然科学研究理事会; 国家高技术研究发展计划(863计划);

关键词：

CRYSTAL-STRUCTURE; OPTICAL-PROPERTIES; PHOTOLUMINESCENCE PROPERTIES; LUMINESCENCE PROPERTIES; ENERGY TRANSFERS; RETINAL DAMAGE; GREEN PHOSPHOR; LIGHT-SOURCES; EFFICIENT; SILICATE;

D O I：

10.1039/c7tc04168c

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, a cyan-emitting phosphor BLS:Ce3+ is reported that has a broad emission band covering both the blue and green regions of the visible spectrum, which can be used instead of two separate blue and green phosphors. The excitation peak of BLS:Ce3+ is located at 400 nm, which matches well with the emission light of efficient near-ultraviolet (NUV) chips. The BLS:Ce3+ phosphor has an internal quantum efficiency (IQE) higher than 90% at room temperature (RT) and an excellent thermal stability (a small reduction of 3% at 150 degrees C relative to the IQE at RT) and is environmentally robust (a small degradation of 6% occurs after aging for 1600 h at 85 degrees C/85% RH relative to the room-temperature IQE value). Using the BLS:Ce3+ phosphor, coupled only with a CaAlSiN3:Eu2+ red phosphor and a 395 nm NUV chip, a NUV-based WLED with a high color rendering index of 90.6 has been achieved. Moreover, the luminous efficiency reaches as high as 32.2 lm W-1, which is much better than that of the NUV-WLEDs employing three phosphors (blue, green and red).

引用

页码：12365 / 12377

页数：13

共 67 条

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