Figure 1

Energy ($E$) vs configuration coordinate ($q$) of defect excitation in the Franck-Condon approximation. $E_g$, $q_g$, and $E_e$, $q_e$ correspond to the lowest-energy structure for the ground and excited states, respectively. Zero-point energy (ZPE) of the ground state, and $n=0$, $m=0$ are the lowest phonon levels in each case. $A\to B$ and $C\to D$ are the vertical absorption and emission and $A\to C$ is the zero-phonon line.Reuse & Permissions