Simultaneous Modulation of Interface Reinforcement, Crystallization, Anti-Reflection, and Carrier Transport in Sb Gradient-Doped SnO /Sb S Heterostructure for Efficient Photoelectrochemical Cell.

In this study, an effective quadruple optimization integrated synergistic strategy is designed to fabricate quality Sb gradient-doped SnO /Sb S heterostructure for an efficient photoelectrochemical (PEC) cell. The experimental results and theoretical calculations reveal that i) optical absorption matching is realized by combining the anti-reflection of SnO and high light absorption ability of Sb S in the visible region; ii) interface reinforcement is carried out by coordinating gradient-distributed Sb in SnO with S in S-rich precursor of Sb S for improving the Sb S crystallization process and matching crystalline lattice of Sb:SnO and Sb S ; iii) ultrahigh electron mobility is achieved by making Sb gradient-doped SnO ; iv) carrier separation and transport are accelerated by constructing type-II heterojunction with appropriate energy level alignment and forming a high-speed electron transport channel. All of above-mentioned optimization effects are integrated into a synergistic strategy for constructing the Sb:SnO /Sb S photoanode, achieving a photocurrent density of 2.

A ZnO@CuO core-shell heterojunction photoanode modified with ZnFe-LDH for efficient and stable photoelectrochemical performance.

In this study, we have designed and synthesized a novel ZnO@CuO core-shell heterojunction photoanode modified with cocatalyst ZnFe-layered double hydroxides (ZnFe-LDH). As expected, the deposition of CuO enhances light harvesting and shortens the diffusion distance for charge transfer. The ZnO@CuO heterojunction also enhances charge separation and suppresses recombination.

Zinc ferrite-based p-n homojunction with multi-effect for efficient photoelectrochemical water splitting.

A novel one-dimensional core-shell zinc ferrite (ZnFeO) p-n homojunction is prepared by a facile two-step hydrothermal method. The core-shell homojunction is constructed by decorating p-type Ni-ZnFeO (shell) onto n-type ZnFeO (core). As expected, significant enhancement in the photocurrent density of the developed homojunction is realized compared to that of pristine ZnFeO (6.