On the position of the Fe²⁺energy level in ZnS

The results of photo-ESR experiments have allowed the authors to interpret the absorption band beneath the fundamental absorption edge of ZnS as being due to the Fe 2+ +h nu to Fe 3+ +e CB photoionisation transition. Analysis of the temperature dependence of the shape of the photoionisation absorption band enabled them to establish the position of the Fe 2+ energy level below the edge of the ZnS conduction band (E th =16200+or-700 cm -1 ).