Study of “Doctor Blade” Nano-CuO Photoelectrode for Perspective Water Splitting

Abstract

Solar fuels are indispensable for a 100% renewable energy future. Pursuing semiconductor photoelectrodes to obtain H2 using water-splitting photoelectrochemical cells is an important research topic today. Bandgaps as high as 1.9 eV have been reported for nano-CuO because of quantum effects; this favors its possible use for water photolysis. In this paper, nano-CuO films, fabricated using the simple “doctor blade” technique, are studied as photoelectrode in a two-electrode PEC cell for water photolysis. SEM analysis confirm the nanometric size of film grains and the photoelectrode porosity. The photocurrent behavior is studied, particularly, photocurrent transients for non-assisted and assisted water photolysis. Existing defects acting as carrier traps explain the different transient behaviors found. The existence of defects is explored using X-ray diffraction and the Williamson-Hall technique.

Published
Jul 14, 2019
How to Cite
BENEDIT-CÁRDENAS, A. A. et al. Study of “Doctor Blade” Nano-CuO Photoelectrode for Perspective Water Splitting. Revista Cubana de Física, [S.l.], v. 36, n. 1, p. 60-65, july 2019. ISSN 2224-7939. Available at: <http://revistacubanadefisica.org/index.php/rcf/article/view/2019v36n1p60>. Date accessed: 20 nov. 2019.
Section
Original Articles