| 研究開始時の研究の概要 |
I develope a straightforward and effective method to produce GCN-C films with a desirable energy band structure in a dual-zone CVD setup. Notably, the GCN-C films exhibit wider visible light absorption, narrow energy band gap, and up to 5 orders of magnitude higher electrical conductivity than pure GCN films. These excellent properties make GCN-C film ideal for high-performance photodetectors, with a photocurrent on/off ratio under visible light for the first time. We expect our strategy to have a widespread impact due to its simplicity and versatility in polymeric semiconductors.
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| 研究実績の概要 |
We developed photoelectrochemical water splitting using as photoanode a thin film of graphitic carbon nitride containing graphitic carbon domains, prepared by vapor deposition of melamine with glucose. The graphitic carbon domain, whose content is modulable over a wide range, enhances the visible light absorption, electrical conductivity, and electron-hole separation. And optimizing it for visible light (420 nm) water splitting. the observation was the residence of radicals in the gCN films containing gC domains even in the dark at ambient temperatures, which possibly facilitate the evolution of oxygen from the photoanode surface. These properties position the gCN-co-gC film as a high-performance PEC system, achieving high photocurrent.
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