Cobalt as a sacrificial metal to increase the photoelectrochemical stability of CuBi2O4 films for water splitting

Photoelectrochemical properties of p-type CuBi2O4 prepared by spray pyrolysis of carbon-free precursor aqueous solution combined with post-annealing treatment

“…60 In addition, cation doping such as Co 2+ into CBO induces a shift of the absorption edge wavelength toward a longer wavelength. 53 The bandgap energy related to the absorption edge wavelength of the CBO needs to be determined more accurately. The light response of CBO to an actual PEC process will be discussed based on the results of the wavelength-dependent PEC characterization described later.…”

“…41,42,51 In contrast, the J at 0.6 V RHE generated by CBO prepared in this work is comparable to those reported CBO photoelectrodes prepared using ethanol/acetic acid-based precursor solution without organic additives together with post-annealing treatment in air (Table S5, ESI†). 40,53…”

“…35–39 CBO precursor compounds have been prepared on the substrates by deposition of the precursor solution using wet processes such as electrodeposition, 36–39,49,52 drop-casting methods, 36,44,45,48,50 spin-coating methods, 46,47 and spray pyrolysis methods. 40–43,51,53 Concerning the wet process to prepare CBO-based photocathodes, most of the precursor solution is based on non-aqueous organic solvents ( e.g. , ethanol and dimethyl sulfoxide) and acetic acid with organic additives ( e.g.…”

Utilizing three-terminal, interdigitated back contact Si solar cells as a platform to study the durability of photoelectrodes for solar fuel production

“…10,18–20 The introduction of protective layers ( e.g. TiO 2 , MoS 2 , sacrificial ions, and polymer films) 5,11,21–27 has greatly extended the illuminated operation of photoelectrodes. However, under real outdoor operating conditions, a semiconductor photoabsorber operating as a photoelectrode needs to be stable under day/night (diurnal) lighting conditions.…”