PHOTO-EPR STUDIES OF ELECTRON AND HOLE TRAPPING BY [FE(CN)(6)](4-) COMPLEXES IN SILVER-CHLORIDE

[Fe(CN)(6)](4-) was incorporated into silver chloride powders precipit ated from aqueous solution with all six cyanide ligands intact. The mo st notable feature of this dopant was its amphoteric behavior, acting as either a deep hole trap or a shallow electron trap. The filled t(2g ) orbital manifold of this complex lies below the Fermi level, which p laces the vacant e(g) levels well above the conduction band minimum. T he trapping behavior of [Fe(CN)(6)](4-) was determined by whether or n ot it was closely associated with a charge-compensating silver ion vac ancy.