Proceedings of nanoGe Spring Meeting 2022 (NSM22)
DOI: https://doi.org/10.29363/nanoge.nsm.2022.124
Publication date: 7th February 2022
The growing demand for renewable energy and self-powered electronic devices is fueling the research on novel energy storage solutions. Some of the main limitations to the diffusion of photovoltaic energy are linked to the intermitting nature of this source, as well as to stability issues, conversion losses, and limitations related to the size of the devices. Here, we report a hybrid nanostructure based on Metal Oxide Nanocrystals (MO NCs) and MoS2 monolayers capable of light-driven charging, combining in a unique system both the energy conversion and energy storage aspects.[1-3] We achieve the direct storage of photons energy as extra positive and negative charges, separated by nanometric distances within the ultra-thin heterostructure. Photo-generated holes are quenched at the semiconductor's surface and injected into the MoS2 monolayer, while the photo-excited electrons accumulate in the ITO nanocrystal (with an average of 75 per NC). The careful design of similar heterostructures opens the path towards all-solid-state solutions for the direct storage of the solar energy.
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