A nitride based polarization-engineered photocathode for water splitting without a p-type semiconductor
文献情報
Akihiro Nakamura, Katsushi Fujii, Masakazu Sugiyama, Yoshiaki Nakano
Photoelectrochemical water splitting is a promising way for hydrogen production with low environmental burden. Although III-nitride semiconductors have potentially favorable properties as water splitting photoelectrodes, they have several limitations for practical use currently. In this study, the concept of a polarization-engineered nitride photocathode for water splitting is proposed to overcome this problem. We observed that the proposed GaN/AlN/GaN structure worked as a photocathode even though it consisted of only n-type III-nitride semiconductors. This polarization-engineered photocathode showed a remarkably stable and relatively high photocurrent since it can avoid the causes of problems from which both n-type and p-type conventional GaN photoelectrodes suffer.
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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.













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