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INORGANIC CHEMISTRY FRONTIERS
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ROYAL SOC CHEMISTRY
DOI: 10.1039/d3qi01632
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The solution-processing of metal chalcogenides is a promising method for improving semiconductor device manufacturing. The amine-thiol solvent system can dissolve a wide range of metals and metal chalcogenides, allowing for convenient synthesis of metal sulfides. In this study, it is shown that solutions containing n-alkylammonium polyselenides can dissolve various metals and metal compounds by forming soluble metal polyselenides, which can be used as precursors for the synthesis of different metal selenide materials.
The solution-processing of metal chalcogenides offers a promising route to improve the manufacturing of semiconductor devices. The amine-thiol solvent system has been deemed an alkahest for its ability to dissolve a wide range of metals and metal chalcogenides. Therefore, it enables convenient synthesis of metal sulfides. However, in the literature there are limited reports of analogous selenium-based alkahest chemistry. Here we show that solutions containing n-alkylammonium polyselenides can dissolve a wide range of metals and metal compounds through the formation of soluble metal polyselenides. These metal polyselenides can subsequently be utilized as precursors for the synthesis of a wide range of binary and multinary metal selenide thin films and nanoparticles, including Cu(In,Ga)Se-2, Cu2ZnSnSe4, and Ag2ZnSnSe4.
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