Hot spots enriched plasmonic nanostructure-induced random lasing of quantum dots thin film

Shan Feng^{1, 3}, Zhang Xiao-Yang^{1, 2, 3}, Wu Jing-Yuan^{1, 3}, Zhang Tong^{1, 2, 3, †}

(color online) SEM images of the gold NS films after annealing in air atmospheres. The samples were annealed at: (a) 150 °C, (b) 200 °C, (c) 250 °C, and (d) 300 °C for 5 minutes, respectively.