Fig. 5From: Electronic States of Nanocrystal Doped with Oxygen and Visible Emission on Black Silicon Prepared by ns-Laser a Optical image of Purcell cavity structure in micrometer scale on the BS surface. b Sharper PL peak with lasing near 600 nm measured at room temperature on Purcell cavity structure in a micrometer scale on the BS surface under excitation laser at 514 nmBack to article page