“…There are two categories of cerium b-diketonate precursors, with the cerium ion in either 3+ or 4+ oxidation states. The precursors initially proposed were the tetrakis(2,2,6,6-tetramethyl-3,5-heptanedionato)cerium(IV) (Ce(tmhd) 4 ), tetrakis (6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octanedionato)cerium(IV) (Ce(fod) 4 ), or Ce(fod) 3 . Among them, Ce(tmhd) 4 has been widely studied, even though it suffers drawbacks such as thermal decomposition and surface passivation.…”