A highly [001]-textured Sb₂Se₃ photocathode for efficient photoelectrochemical water reduction

Abstract

The highly [001]-oriented Sb2Se3 film exhibits an outstanding charge carrier transport efficiency and minimized recombination losses. It delivers a record high saturation hydrogen reduction photocurrent density of −25.4 mA cm−2.

A Stable and Efficient Photocathode Using an Sb2S3 Absorber in a Near-Neutral Electrolyte for Water Splitting

“…In addition, Tang’s group obtained a vertically oriented Sb 2 S 3 film by deposition on thermally treated TiO 2 . The effects of orientation on the performance of Sb 2 Se 3 (isostructural compound to Sb 2 S 3 ) photocathodes have been strongly verified by Chen’s group . They successfully fabricated a [001]-oriented Sb 2 Se 3 film by selenizing a [003]-oriented Sb/Mo precursor film and achieved a very high photocurrent density of −20.2 mA cm –2 and a solar energy conversion of 1.36%.…”

“…The effects of orientation on the performance of Sb 2 Se 3 (isostructural compound to Sb 2 S 3 ) photocathodes have been strongly verified by Chen's group. 40 They successfully fabricated a [001]-oriented Sb 2 Se 3 film by selenizing a [003]oriented Sb/Mo precursor film and achieved a very high photocurrent density of −20.2 mA cm −2 and a solar energy conversion of 1.36%. Until date, there is not yet a published work that used a Sb 2 S 3 semiconductor as an absorber material in photocathodes for solar water splitting.…”

Smart Bifunctional Sb2Se3 Nanorods for Integrated Water Purification: Insoluble Liquid Separation and Photoelectrochemical Degradation

“…The calculated energy band diagram (Figure d) and the electrical parameters of the Sb 2 Se 3 photoabsorber demonstrate the optimal charge‐transport property and space‐charge width for photoelectrochemical applications. A drift‐assisted transport in the space‐charge region at lower potentials was evident from the analysis, which enhances the collection efficiency of the photogenerated carriers and is beneficial for the photodegradation process . A schematic photoelectrocatalytic purification process of polluted water containing MO (after the physical separation of water/oil) is shown in Figure e, in which a cell containing Sb 2 Se 3 is the working electrode and counter electrode (normally Pt).…”

Modification of 1D TiO2 nanowires with GaOxNy by atomic layer deposition for TiO2@GaOxNy core–shell nanowires with enhanced photoelectrochemical performance

“…In recent work, it has been discussed that photocatalysts using cations with d 10 electronic configurations such as Se 4+ , Ge 4+ , In 3+ , Sb 5+ , and Ga 3+ ions [12][13][14] can realize visible light catalytic reaction. The enhanced performance is suggested to come from high band dispersion of hybridized sp orbitals in semiconductors with d 10 conduction bands, which promotes high electron mobility to enhance the photocatalytic performance.…”