Coral-like Sb2Se3/SnS2 photocathode co-optimized by bilayer Sb2Se3 structure and hole-storage layer for photoelectrochemical water splitting

Hole Storage Interfacial Regulation of Sb2Se3 Photocathode with Significantly Enhanced Photoelectrochemical Performance

“…Bilayer Sb 2 Se 3 thin-film photoelectrodes are prepared by a two-step vapor transport deposition (VTD) process, as in our previous work. 31 As shown in the scheme diagram (Scheme 1), first, the film was deposited at 650 °C for 1 h, followed by rapid cooling to obtain a dense Sb 2 Se 3 film. On this basis, the temperature was changed to 600 °C for the second deposition to obtain Sb 2 Se 3 nanorods.…”

“…Antimony selenide (Sb 2 Se 3 ) has a suitable band gap (1.0–1.3 eV), high electron mobility (16.9 cm 2 V –1 s –1 ), high light absorption coefficient (α > 10 5 cm –1 ), and low cost, making it an ideal material for building photocathodes. − However, the interface of Sb 2 Se 3 is prone to severe photogenerated carrier recombination, which leads to low PEC performance and hinders the improvement of HER efficiency. − To further enhance the PEC performance of the Sb 2 Se 3 photocathode, numerous interface engineering attempts have been made. Pt nanoparticles have high catalytic activity and can effectively accelerate electron transfer for the HER. − de Brito and co-workers further investigated the deposition of Pt nanoparticles on the Sb 2 Se 3 surface by electrodeposition (ED) and photoelectrodeposition (PED) methods .…”

Solution-processed Sb2Se3 photocathodes under Se-rich conditions and their photoelectrochemical properties

“…Novel materials with p-type characteristics have been intensively researched to produce an efficient and durable photocathode in a photoelectrochemical (PEC) water splitting system. [1][2][3][4][5] Antimony selenide (Sb 2 Se 3 ) has received much attention as a promising candidate material for this purpose, [6][7][8][9][10] because it has several attractive features for an efficient, durable, and economical PEC water splitting system. Sb 2 Se 3 is a p-type semiconductor with a suitable band position for the hydrogen evolution reaction.…”

Improved performances in Sb2Se3 solar cells based on CdS buffered TiO2 electron transport layer

“…Among them, Sb 2 Se 3 is attended by researchers due to its excellent photoelectric properties, rich earth reserves, and low toxicity [9][10][11][12][13] . In the past few years, the power conversion e ciency (PCE) of Sb 2 Se 3 thin lm solar cells has rapidly increased from 3.21-10.12% [13][14][15][16] . This demonstrates the enormous potential of Sb 2 Se 3 in the light absorption layer and its importance for further exploration.…”