This title appears in the Scientific Report : 2020 

Tantalum( v ) 1,3-propanediolate β-diketonate solution as a precursor to sol–gel derived, metal oxide thin films
Beale, Christopher
Hamacher, Stefanie / Yakushenko, Alexey / Bensaid, Oumaima / Willbold, Sabine / Beltramo, Guillermo / Möller, Sören / Hartmann, Heinrich / Neumann, Elmar / Mussler, Gregor / Shkurmanov, Alexander / Mayer, Dirk / Wolfrum, Bernhard / Offenhäusser, Andreas (Corresponding author)
Bioelektronik; IBI-3
Mechanobiologie; IBI-2
RSC Advances, 10 (2020) 23, S. 13737 - 13748
London RSC Publishing 2020
10.1039/D0RA02558E
Journal Article
Controlling Configuration-Based Phenomena
Get full text
Get full text
OpenAccess
OpenAccess
Please use the identifier: http://dx.doi.org/10.1039/D0RA02558E in citations.
Please use the identifier: http://hdl.handle.net/2128/24682 in citations.
Tantalum oxide is ubiquitous in everyday life, from capacitors in electronics to ion conductors for electrochromic windows and electrochemical storage devices. Investigations into sol–gel deposition of tantalum oxide, and its sister niobium oxide, has accelerated since the 1980s and continues to this day. The aim of this study is to synthesize a near UV sensitive, air stable, and low toxicity tantalum sol–gel precursor solution for metal oxide thin films – these attributes promise to reduce manufacturing costs and allow for facile mass production. By utilizing 1D and 2D nuclear magnetic resonance, this study shows that by removing ethanol from the precursor solution at a relatively low temperature and pressure, decomposition of the photosensitive complex can be minimized while obtaining a precursor solution with sufficient stability for storage and processing in the atmosphere. The solution described herein is further modified for inkjet printing, where multiple material characterization techniques demonstrate that the solution can be utilized in low temperature, photochemical solution deposition of tantalum oxide, which is likely amorphous. Tested substrates include amorphous silica, crystalline silicon wafer, and gold/titanium/PET foil. The hope is that these results may spark future investigations into electronic, optical, and biomedical device fabrication with tantalum oxide, and potentially niobium oxide, based films using the proposed synthesis method.