Electronic energy levels of CsCdCl3

The excitation and emission spectra of CsCdCl3 crystal grown by the Bridgman growth technique, are observed. Its dominant excitation spectra correspond to the transitions between the electronic energy levels of the face-shared [CdCl6]4− octahedron complexes with C3v symmetry. With the help of the molecular orbital diagram of the [CdCl6]4− molecule complex, an approximate electronic energy level diagram of this crystal is constructed using one-electron approximation.