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Title: A UV-absorber bismuth(III)-N-methyldiethanolamine complex as a low-temperature precursor for bismuth-based oxide thin films
Authors: Perez-Mezcua, Dulce
Sirera, Rafael
Jimenez, Ricardo
Bretos, Inigo
DE DOBBELAERE, Christopher 
VAN BAEL, Marlies 
Lourdes Calzada, M.
Issue Date: 2014
Source: JOURNAL OF MATERIALS CHEMISTRY C, 2 (41), p. 8750-8760
Abstract: Novel synthetic methods in solution that reduce the formation temperature of bismuth-based electronic oxides are essential for their successful integration with substrates of low thermal stability within micro- and flexible-electronic devices. This has become crucial for these oxides, since they appear as promising low-toxic functional materials alternative to other electronic oxides containing heavy metals. However, this is a challenge, since the crystallization of bismuth oxides occurs at high temperatures. To overcome these problems, we synthesize here a UV-absorber charge transfer metal complex in solution between the Bi(III) ion and an alkanolamine, N-methyldiethanolamine (Bi(III)-mdea). We take advantage of the photoreactivity of this complex to prepare bismuth-based oxide thin films at low temperature, which cannot be achieved by traditional thermal processing methods. Room temperature stable oxide thin films of the high-temperature delta-Bi2O3 phase are prepared from these solutions by UV-irradiation and annealing at 350 degrees C. The efficiency of this synthetic strategy is additionally proven for the low temperature preparation of thin films of much more complex bismuth based functional oxides: the multiferroic bismuth ferrite, BiFeO3, and the relaxor-ferroelectric perovskite of bismuth, sodium and barium titanate, (Bi0.5Na0.5)(0.945)Ba0.055TiO3.
Notes: [Perez-Mezcua, Dulce; Jimenez, Ricardo; Bretos, Inigo; Lourdes Calzada, M.] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain. [Sirera, Rafael] Univ Navarra, Fac Ciencias, Dept Quim & Edafol, E-31008 Navarra, Spain. [De Dobbelaere, Christopher; Hardy, An; Van Bael, Marlies K.] Hasselt Univ, Inst Mat Res Inorgan & Phys Chem, IMEC Vzw, Div IMOMEC, B-3590 Diepenbeek, Belgium.
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DOI: 10.1039/c4tc00960f
ISI #: 000343001600015
Rights: This journal is © The Royal Society of Chemistry 2014.
Category: A1
Type: Journal Contribution
Validations: ecoom 2015
Appears in Collections:Research publications

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