Low temperature and single-source synthesis of a CuO–Ba2Cu3O5+x composite: Fabrication of thin films and characterization
摘要:
A new heterobimetallic, single-source precursor with the formula Ba-2(mu-OAc)(4)(OAc)(2)Cu-4(mu-dmae)(4)(OH)(2) (1) [dmae = N,N-dimethylaminoethanolate and OAc = acetate] has been synthesized by the interaction of Cu(OAc)(2) center dot H2O with Ba(dmae)(2) in toluene for the low temperature deposition of CuO-Ba2Cu3O5+x composite thin films. Complex (1) was characterized by melting point, elemental analysis, FT-IR spectroscopy, mass spectrometry, thermal analysis (TGA) and single crystal X-ray diffraction. Complex (1) crystallizes in the triclinic space group P (1) over bar. A TGA study demonstrated that the complex undergoes controlled thermal decomposition at 400 degrees C to give the CuO-Ba2Cu3O5+x composite. The chemical composition and surface morphology of the deposited mixed oxide thin films were analyzed by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX) and X-ray powder diffraction (XRPD), which support the formation of the pure crystalline CuO-Ba2Cu3O5+x composite with particle sizes ranging from 0.08 to 0.4 mu m. The thickness and voltage-current characteristics of the thin films were determined with a profilometer and a voltmeter using the four-probe method, respectively. (C) 2009 Elsevier Ltd. All rights reserved.
Low temperature and single-source synthesis of a CuO–Ba2Cu3O5+x composite: Fabrication of thin films and characterization
摘要:
A new heterobimetallic, single-source precursor with the formula Ba-2(mu-OAc)(4)(OAc)(2)Cu-4(mu-dmae)(4)(OH)(2) (1) [dmae = N,N-dimethylaminoethanolate and OAc = acetate] has been synthesized by the interaction of Cu(OAc)(2) center dot H2O with Ba(dmae)(2) in toluene for the low temperature deposition of CuO-Ba2Cu3O5+x composite thin films. Complex (1) was characterized by melting point, elemental analysis, FT-IR spectroscopy, mass spectrometry, thermal analysis (TGA) and single crystal X-ray diffraction. Complex (1) crystallizes in the triclinic space group P (1) over bar. A TGA study demonstrated that the complex undergoes controlled thermal decomposition at 400 degrees C to give the CuO-Ba2Cu3O5+x composite. The chemical composition and surface morphology of the deposited mixed oxide thin films were analyzed by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX) and X-ray powder diffraction (XRPD), which support the formation of the pure crystalline CuO-Ba2Cu3O5+x composite with particle sizes ranging from 0.08 to 0.4 mu m. The thickness and voltage-current characteristics of the thin films were determined with a profilometer and a voltmeter using the four-probe method, respectively. (C) 2009 Elsevier Ltd. All rights reserved.