One-step facile solution synthesis of alpha-Ag2S nanoparticles and fabrication of multi-layered thin films

The ductility possessed by α-Ag₂S renders it a promising candidate for various forthcoming stretchable electronic devices. There is a significant need for a facile approach for producing α-Ag₂S thin film with a dense surface. This study has opted for the spin coating technique to prepare α-Ag₂S thin films from the colloidal solution. This method starts by mixing AgNO₃ and amidino thiourea solution and is easy, straightforward and much less time-consuming compared to self-assembling procedure. The thickness of the film can be well-controlled by coating multiple layers on various substrates. The observed resistive switching behavior in the obtained dense α-Ag₂S thin film, along with the integrity of the film in the bending test, suggests its potential utility in electronic applications. It is hoped that our work can offer an innovative mean for crafting flexible α-Ag₂S thin film applicable in future devices.