WE PROPOSE THE SYNTHESIS OF ?-TRIKETONATE COMPLEXES OF ZN(II) AND CU(II) AS PRECURSORS IN THE PHOTO-DEPOSITION OF ZNO FILMS LOADED WITH CUO, WHICH ARE SUBSEQUENTLY CALCINED AT 600 ?C. THE ZNO/CUO HETEROJUNCTION SYSTEM WAS ANALYZED BY XRD, SEM AND XPS; THE RESULTS DEMONSTRATE LOW CRYSTALLINITY OF THE FILMS AND THE FORMATION OF ZNO AND CUO. THE RESULTS OF OPTICAL PROPERTIES CONFIRM A GRADUAL REDUCTION OF THE OPTICAL BANDGAP WHEN CUO LOADING IS INCREASED IN THE ZNO MATRIX AND THE PHOTOLUMINESCENCE TESTS FOUND A DECREASE IN THE EMISSION BANDS OF THE ZNO MATRIX WITH THE INSERTION OF CUO. THE MAXIMUM PHOTO-DEGRADATION EFFICIENCY IS ACHIEVED FOR ZNO FILMS LOADED WITH CUO AT 1 MOL%, OBTAINING 75.4 AND 68.3% FOR RHODAMINE B AND RHODAMINE 6G, RESPECTIVELY. WE PROPOSE THAT ZNO IS RESPONSIBLE FOR THE FORMATION OF SUPEROXIDE RADICALS AS THE MAIN REACTIVE SPECIES IN THE DEGRADATION OF BOTH RHODAMINES.

THE PHOTOLYSIS OF THE HF(DBM)4, ER(DBM)3 AND TM(DBM)3 COMPLEXES ON SILICON SUBSTRATES RESULTS IN THE PRODUCTION OF PURE HFO2, HFO2/ER, HFO2/TM, AND HFO2/ER/TM FILMS. THE PHOTOCHEMISTRY OF THESE COMPLEX PRECURSORS WAS MONITORED USING UV?VISIBLE AND FT-IR SPECTROSCOPY. UNDER 254-NM LIGHT PHOTOLYSIS, THE LIGANDS WERE DETACHED FROM THE COMPLEXES, LEADING TO THE RELEASE OF METAL IONS. THESE IONS GRADUALLY OXIDIZED AND FORMED THE RESPECTIVE OXIDE. SUBSEQUENTLY, THE RESULTING FILMS WERE CALCINED AT 600 ?C FOR 2 H TO ACHIEVE COM- PLETE OXIDATION AND CRYSTALLINITY. TO CHARACTERIZE SELECTED SAMPLES, X-RAY DIFFRACTION (XRD), X-RAY PHOTOELECTRON SPECTROSCOPY (XPS), AND SCANNING ELECTRON MICROSCOPY (SEM-EDX) WERE EMPLOYED. NIR LUMINESCENT STUDIES REVEALED THAT WHEN EXCITED AT 980 NM, THE HFO2/ER SAMPLES EXHIBITED EMISSIONS CORRESPONDING TO THE 4I13/2 ? 4I15/2 TRANSITIONS OF THE ER3+ IONS. CONVERSELY, THE HFO2/TM SAMPLES DISPLAYED EMISSIONS ATTRIBUTED TO THE 3H4 ? 3F4 AND 3F4 ? 3H6 TRANSITIONS OF THE TM IONS. IN THE CASE OF HFO2 CO-DOPED WITH