"Roller coaster"-like thermal evolution of the Er3+ ion's red photoluminescence in CaWO4:Yb3+/Er3+ phosphors

被引：4
作者：
Li, Leipeng [1 ]
Qin, Feng [2 ]
Zhou, Yuan [1 ]
Zhang, Xiyu [1 ]
Li, Lu [3 ]
Gao, Hong [3 ]
Zheng, Yangdong [1 ]
Zhang, Zhiguo [2 ]
机构：
[1] Harbin Inst Technol, Sch Phys, Harbin 150001, Heilongjiang, Peoples R China
[2] Harbin Inst Technol, Sch Instrumentat Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China
[3] Harbin Normal Univ, Sch Phys & Elect Engn, Key Lab Photon & Elect Bandgap Mat, Minist Educ, Harbin 150025, Heilongjiang, Peoples R China
来源：
OPTICS LETTERS | 2019年 / 44卷 / 17期
基金：
中国国家自然科学基金;
关键词：
UP-CONVERSION LUMINESCENCE; TEMPERATURE; NANOCRYSTALS; SENSITIVITY; EMISSIONS; GREEN;
D O I：
10.1364/OL.44.004411
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The abnormal "roller coaster"-like thermal evolution of the Er3+ ion's red photoluminescence (corresponding to the( 4)F(9/2) - I-4(15/2) transition) in CaWO4:Yb3+/Er3+ phosphors is observed. This red emission suffers from a strong thermal quenching in the 293-573 K temperature range, followed by a sharp increase on further increasing the temperature. The mechanism behind this phenomenon is confirmed to be from the dynamic temperature-dependent multiple mechanisms imposed on the F-4(9/2) state. At relatively low temperatures, the two-photon upconversion mechanism plays a leading role while, with the increasing of temperature, the one-photon channel, ascribed to the thermal population from the lower I-4(9/2) state, gradually takes a dominant place. (C) 2019 Optical Society of America
引用
收藏
页码：4411 / 4414
页数：4
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