A Guanidinium-Based Mn4+-Doped Red-Emitting Hybrid Phosphor with High Stability

被引：28

作者：

Ming, Hong ^{[1
,2
]}

Zhao, Yifei ^{[1
,2
]}

Zhou, Yayun ^{[1
,2
]}

Zhang, Shuai ^{[1
,2
]}

Wang, Yuanjing ^{[1
,2
]}

Song, Enhai ^{[1
,2
]}

Xia, Zhiguo ^{[1
,2
]}

Zhang, Qinyuan ^{[1
,2
]}

机构：

[1] South China Univ Technol, State Key Lab Luminescent Mat & Devices, Guangzhou 510641, Peoples R China

[2] South China Univ Technol, Guangdong Prov Key Lab Fiber Laser Mat & Appl Tec, Guangzhou 510641, Peoples R China

来源：

ACS APPLIED ELECTRONIC MATERIALS | 2020年 / 2卷 / 12期

基金：

美国国家科学基金会;

关键词：

Mn4+; Cr3+; organic-inorganic hybrid; fluoride phosphors; backlight displays; ROOM-TEMPERATURE SYNTHESIS; PHOTOLUMINESCENCE; EFFICIENT; LUMINESCENCE; MORPHOLOGY; MN4+; PERFORMANCE; CRYSTAL; RAMAN; RB;

D O I：

10.1021/acsaelm.0c00916

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Great efforts have been put in search of phosphors to fulfill the requirements for phosphor-converted white lightemitting diodes (pc-WLEDs). Herein, a general organic-inorganic hybridization strategy was demonstrated in Mn4+-, Cr3+-, or Eu3+- doped guanidinium-based zero-dimensional hybrid fluorides to find phosphors for pc-WLEDs. Among which, GA(3)AlF(6):Mn4+ (where GA represents the guanidinium cation [C(NH2)(3)](2)) was selected to reveal their crystal structure, local symmetry, and luminescence properties. Density functional theory calculations suggested that GA(3)AlF(6) with a wide band gap (similar to 5.24 eV) and the F-1' interstitials are generated to balance the charge differences caused by non-equivalent doping. The GA(3)AlF(6) :Mn4+ hybrid could sustain similar to 573 K high temperature without degradation and keep 90.1% of the original luminescence intensity at similar to 373 K. A pc-WLED with wide color gamut (108.3%) of National Television System Committee standard was fabricated with GA(3)AlF(6):Mn4+, suggesting its potential in high-quality backlight displays. This work not only brings a brand-new kind of organic-inorganic fluoride phosphor family but also provides great guiding significance for future exploration of fluoride-based functional materials containing a hybrid structure.

引用

页码：4134 / 4145

页数：12

共 48 条

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