Upconversion enhancement through a facile, ultrafast, and low-threshold laser annealing strategy.

作者信息

Xu Li, Zhang Jiaming, Gao Danheng, Lu Kailei, Din Isam Ud, Shahzad Muhammad Khuram, Zhang Xingyu, Zhang Xiang, Chen Hongzhou, Zhao Enming, Zhang Zhilin, Liu Lu

机构信息

College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, People's Republic of China.

出版信息

Nanotechnology. 2019 Oct 25;30(43):435703. doi: 10.1088/1361-6528/ab32f6. Epub 2019 Jul 17.

DOI:10.1088/1361-6528/ab32f6

PMID:31315100

Abstract

Particle size significantly affects the brightness of luminescent nanocrystals. Herein we firstly adopt a 1530 nm CW laser as the optical heating source to increase the particle size of Er heavily doped nanocrystals, leading to giant enhancement of the luminescent intensity. The advantages of this method are mainly feature along the facile route, with an ultrafast process, and low threshold of the laser power density. The detailed mechanisms of the laser annealing are carefully investigated. In addition, fluorescence intensity ratio behaviours using different emission bands are comparatively investigated.

摘要