The photoelectrode, inspired by the way plants convert sunlight into energy, is capable of absorbing visible light from the sun, and then using it to split water molecules (H2O) into hydrogen and oxygen.

This photoelectrode takes the form of 2D hybrid metal-dielectric structure, which mainly consists of three layers of gold film, ultrathin TiO2 layer and gold nanoparticles.

The team reported that this promising photoelectrode shows high light absorption of about 90 percent in the absorption spectrum (380-700 nm) of pure water, as well as significant enhancement in photo-catalytic applications.

Moreover, according to the researchers, this photoelectrode uses approximately 95 percent of the visible spectrum of sunlight which makes up a substantial portion (40 percent) of full sunlight.


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