Optical absorption of Co2+ in ZnO

Polarized-optical-absorption spectra of ${\mathrm{Co}}^{2+}$ in ZnO are reported. The crystal-field transitions from the $^{4}A_{2}$ ground state to the $^{4}T_{2} (F)$, $^{4}T_{1} (F)$, and $^{2}E (G)$ multiplets are analyzed in detail. These bands consist of sharp zero-phonon lines and their vibro... View More