Electrical Demonstration of Sn–S-Based OTS Materials From Theoretical Design for Sustainable Innovation

In this work, we experimentally validate our theoretical framework for the ab initio screening of new, sustainable materials for ovonic threshold switching (OTS) applications, avoiding elements, such as As and Se that are associated with a high health and safety risk. We demonstrate that the newly designed Sn-S-based OTS ternary alloys are electrically functional and investigate the links between material properties and electrical performance. Results indicate that the Sn-S material system is a promising candidate for OTS selector and memory applications. Our findings open new research paths for further composition optimization aimed at bridging the performance gap with the state-of-the-art materials based on As and Se. The experimental results will enable further refinement of the theoretical model and improve its prediction capabilities.