Plasmonically Enhanced Upconversion Luminescence via Holographically Formed Silver Nanogratings
Plasmonically Enhanced Upconversion Luminescence via Holographically Formed Silver Nanogratings
复制标题
通过全息形成的银纳米光栅进行等离子体增强上转换发光
DOI：
10.1021/acsami.9b16461
复制
发表时间：
2020
影响因子：
9.5
通讯作者：
Liu Yan Jun
中科院分区：
文献类型：
--
作者：
Chu Anshi;He Huilin;Yin Zhen;Peng Ruiheng;Yang Hongcheng;Gao Xian;Luo Dan;Chen Rui;Xing Guichuan;Liu Yan Jun
Greatly enhanced upconversion luminescence was demonstrated by integrating the core–shell upconversion nanorods with the Ag nanogratings. Both the Ag nanogratings and upconversion nanorods were fabricated/synthesized in a facile, cost-effective, high-throughput way. Experimental results showed that the upconversion luminescence intensity of Er3+in the core–shell upconversion nanorods can be well tuned and enhanced by changing the shell thickness and the period of the Ag nanograting. The underlying physical mechanism for the upconversion luminescence enhancement was attributed to the plasmonically enhanced near infrared broadband absorption of the periodic Ag nanograting and the localized surface plasmon resonance of Ag nanocrystals. The maximum enhanced factors of 523 nm, 544 nm (green emission), and 658 nm (red emission) of Er3+ions excited at 980 nm are 3.8-, 5.5-, and 4.6-folds, respectively. Our fabrication approach and results suggest that such a simple integration is potentially useful for biosensing/imaging and anti-counterfeiting applications.
