Proceedings of Materials for Sustainable Development Conference (MAT-SUS) (NFM22)
DOI: https://doi.org/10.29363/nanoge.nfm.2022.203
Publication date: 11th July 2022
Simply prepared chalcogenide materials have been investigated as light absorbers for photoelectrochemical water splitting. I will begin the talk with our work on antimony selenide, a promising quasi-1D material whose efficiency has rapidly increased in the past ten years. Thin films of antimony selenide are easily prepared by selenization of antimony metal deposited by electrodeposition or sputtering. The effect of a low temperature sulfurization treatment was investigated with time resolved microwave conductivity, photoluminescence, and low frequency Raman spectroscopy, and the effect on both bulk and surface recombination will be discussed. The water splitting photocathodes were characterized under operando conditions using electrochemical impedance spectroscopy. We will then explore the related compound antimony sulfide and its band alignment with atomic layer deposited titanium dioxide, which serves both as an electron extracting contact and corrosion protection layer. Finally, a simple solution processing method for phase pure cuprous sulfide will be presented, where the nanostructure can be controlled with the appropriate solvent mixture of the precursor solution.
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Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
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