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Related Experiment Video

Updated: Jun 10, 2026

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

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Published on: October 5, 2019

Development of All-Solid-State Sputtered S‑Scheme Heterojunction Photoanode for Stable and Efficient Solar-Driven

Kumar Shubham^1,2, Mukhesh K Ganesha¹, Ashutosh K Singh^1,2

¹Centre for Nano and Soft Matter Sciences, Bangalore, Karnataka, India.

Small (Weinheim an Der Bergstrasse, Germany)

|June 9, 2026

Summary

This study introduces a novel MoSe2/Au/TiO2 photoanode for efficient solar hydrogen production. The plasmon-coupled S-scheme heterojunction significantly boosts light absorption and charge separation, enabling scalable clean hydrogen generation.

Keywords:

S‐scheme green hydrogen magnetron sputtering multi‐heterojunction photoelectrochemical water oxidation photostability

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Last Updated: Jun 10, 2026

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Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods

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Published on: February 11, 2016

Area of Science:

Materials Science
Electrochemistry
Renewable Energy

Background:

Photoelectrochemical (PEC) water splitting for clean hydrogen production faces challenges in light absorption and charge recombination.
Developing efficient and scalable photoanodes is crucial for advancing solar-driven hydrogen generation.

Purpose of the Study:

To design and fabricate a novel, all-solid-state plasmon-coupled S-scheme heterojunction photoanode for enhanced PEC water splitting.
To investigate the effect of a gold (Au) interlayer on the performance and mechanism of the MoSe2/TiO2 heterojunction.

Main Methods:

Fabrication of MoSe2/TiO2 and MoSe2/Au/TiO2 heterojunction photoanodes using scalable magnetron sputtering.
Characterization using in situ photoelectrochemical studies and spectroscopic techniques.
Performance evaluation through photocurrent density, surface photovoltage, and carrier lifetime measurements.

Main Results:

The initial MoSe2/TiO2 heterojunction showed enhanced light harvesting and a photocurrent density of ~0.25 mA/cm2.
The introduction of an ultrathin Au interlayer in MoSe2/Au/TiO2 significantly improved performance, yielding ~0.54 mA/cm2 photocurrent density.
The Au interlayer facilitated a stronger built-in electric field, improved band alignment, and enhanced charge separation, leading to a carrier lifetime of 0.55 s and stable operation over 6.5 hours.

Conclusions:

The engineered MoSe2/Au/TiO2 plasmon-coupled S-scheme heterojunction is a robust and scalable architecture for efficient solar-driven hydrogen generation.
The Au interlayer plays a critical role in optimizing the S-scheme mechanism for improved PEC water splitting performance.
This work presents a promising pathway for advancing clean hydrogen production technologies.