Fe dopant in ZnO: 2+ vs 3+ valency and ion-carrier s,p-d exchange interaction

J. Papierska, A. Ciechan, P. Bogusławski +16

Dopants of transition metal ions in II-VI semiconductors exhibit native 2+ valency. Despite this, 3+ or mixed 3+/2+ valency of iron ions in ZnO was reported previously. Several con…