Effect of heterojunction structures on photoelectrochemical properties of ZnTe-based photocathodes for water reduction

Abstract

ZnTe-based photocathodes with a n-ZnS/ZnTe/p-ZnTe structure showed superior H2 liberation rate, indicating the possibility to use this structure for artificial solar water splitting.

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

“…The two peaks located at 52.9 eV and 54.6 eV are ascribed to Se 2− in the Sb 2 Se 3 lm, whereas the peak located at 55. 4 eV is ascribed to the elemental Se. 39,40 The intensity of the peak located at 55.4 eV began to appear when the Sb : Se molar ratio was above 1 : 7.5 (Fig.…”

“…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.…”

Integration of a Cu2O/ZnO heterojunction and Ag@SiO2 into a photoanode for enhanced solar water oxidation

“…12 Various methods, such as metal doping, surface catalysts, and heterojunction construction, are applied to improve the photoelectric conversion efficiency of ZnO. [13][14][15] The construction of heterojunctions is one of the effective methods to improve PEC-WS performance and also attracts widespread attention. 16 Z-type heterojunctions can provide a stable internal electric eld between semiconductors and accelerate the migration of photogenerated carrier, which are preferred over general heterojunctions.…”

Electrochemical deposition of GaTe thin films for photoelectrochemical applications

“…Cu 2 O as one of most representative photocathodes have been widely investigated [7,8]. Recently, tellurium-based compound semiconductors such as CdTe [9] and ZnTe [10,11] exhibiting potential application as photocathodes have attracted research interest.…”