Journal
CHEMICAL VAPOR DEPOSITION
Volume 20, Issue 7-9, Pages 313-319Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cvde.201407108
Keywords
E-Fe2O3; CuO; CVD; Sputtering; Nanocomposites
Funding
- European Community [ENHANCE-238409]
- FP7 project SOLAROGENIX [NMP4-SL-2012-310333]
- Padova University [CPDA102579, CPDR132937/13]
- Regione Lombardia-INSTM ATLANTE projects
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In this paper we report on the first example of Fe2O3/CuO composites fabricated by a two-step vapor-phase synthetic strategy. The target route is based on the CVD of Fe2O3 nanorod arrays on Si(100) at 400 degrees C starting from Fe(hfa)(2)TMEDA (hfa=1,1,1,5,5,5-hexafluoro-2,4-pentanedionate; TMEDA=N,N,N,N-tetramethylethylenediamine), followed by radio frequency (RF) copper sputtering for various process durations, and final ex-situ annealing in air. The combined use of complementary structural, morphological, and chemical analyses give evidence of the formation of pure nanocomposite systems, characterized by the presence of the sole E-Fe2O3 and CuO phases. The unique features of the adopted approach enable an efficient surface decoration of E-Fe2O3 rods by CuO nanoparticles a few nm in diameter, resulting in an intimate contact between the two oxides, and a CuO content tunable through variations of the sole sputtering time.
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