Fig. 4: Comparison of PL mechanisms.
From: Regulation of the photophysical dynamics of metal nanoclusters by manipulating single-point defects
PL mechanism of a Au21 and b Au22 nanoclusters. c Overview of the single-point defect manipulation towards electron-photon coupling and intersystem crossing of Au21 and Au22 nanoclusters. Color legends: green sphere and orange sphere, Au; red sphere, S; blue-green sphere and light grey sphere, P.
