13 March 2015 Nanotextured CuO: sensing and light harvesting platform
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Rapid and cost effective fabrication of nano-textured surfaces of CuO and Cu2O by chemical bath process was used to fabricated large surface areas with cross sections in centimeters. Through chemical etching and oxidation induced nano-texturation Cu foils are rendered black and their surface area is increased by two orders of magnitude. Magnetronic Au sputtering was used to coat the nano-textured CuxO features with nano-granular metal films which were found to be conformal for the range of 5-50 nm layer thicknesses. The Au coated substrates of CuxO were tested for surface enhanced Raman scattering (SERS) performance and showed one of the best sensitivity enhancements when compared with other nano-textured surfaces. Application potential of the black-Cu2O for SERS sensing and for solar cell applications is discussed.
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A. Balčytis, Gediminas Seniutinas, Jurga Juodkazyte, B. C. C. Cowie, F. Lapierre, S. Juodkazis, "Nanotextured CuO: sensing and light harvesting platform", Proc. SPIE 9374, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics VIII, 93740K (13 March 2015); doi: 10.1117/12.2082601; https://doi.org/10.1117/12.2082601

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