Boosting the 1540 nm near-infrared luminescence of Er3+doped double perovskites via cross-relaxation and energy transfer

被引：4

作者：

Zhang, Hao ^{[1
]}

Gao, Huiping ^{[1
]}

Sun, Ying ^{[1
]}

Zhao, Jun ^{[1
]}

Liu, Yuefeng ^{[1
]}

Zhang, Huafang ^{[1
]}

Zhang, Zhenlong ^{[1
]}

Mao, Yanli ^{[1
]}

机构：

[1] Henan Univ, Sch Phys & Elect, Int Joint Res Lab New Energy Mat & Devices Henan P, Kaifeng, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2023年 / 49卷 / 11期

关键词：

Double perovskites; Near-infrared light source; Rare earth ions; Cross-relaxation; Energy transfer; EMISSION; ER3+; IONS;

D O I：

10.1016/j.ceramint.2023.02.175

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Rare earth (RE) doped lead-free double perovskites (DPs) are potential near-infrared (NIR) light source materials due to their non-toxicity, simple preparation and low price. In this work,Cs2Ag0.1Na0.9BiCl6 DPs were chosen as matrix materials and different RE ions (Eu3+/Yb3+/Tb3+) were co-doped with Er3+ ions to study the effective ways to further enhance the NIR luminescence of Er3+ at 1540 nm in DPs. It found that double-doping (Eu-Er, Tb-Er, and Yb-Er) can improve the 1540 nm emission of Er3+ in DPs through cross-relaxation (CR) and energy transfer (ET), respectively. For tri-doped samples (DPs-Yb-Eu-Er and DPs-Yb-Tb-Er), the CR process between the Eu3+ (Tb3+) and Er3+ ions and the ET process from Yb3+ to Er3+ ions enhance synergically the luminescence of Er3+ at 1540 nm. Under excitation at 365 and 980 nm, the luminescence enhancement of DPs-Yb-Eu-Er at 1540 nm is 6.2 and 45 times, respectively, compared with that of DPs-Er. At the excitation of 365 nm, the photoluminescence quantum yield (PLQY) of DPs-Yb-Eu-Er is 18.2%, which is the maximum efficiency recorded reported so far for micron level DPs. Finally, DPs-Yb-Eu-Er was embedded into a polymethyl methacrylate (PMMA) polymer matrix to form a NIR light-emitting diode (LED) device. Good night vision imaging and tissue penetration experiments were performed under the irradiation of this NIR LED. This work provided a new method for the design of RE doped lead-free DPs with effective NIR emission.

引用

页码：18068 / 18075

页数：8

共 30 条

[1] Enhancement of the luminescence yield of Er3+ ions at λ = 1.54 μm in ZBLAN glass additionally doped with Eu3+ and Tb3+ and pumped in the range λ = 0.975 μm [J].