Advances in Engineering Advances in Engineering features breaking research judged by Advances in Engineering advisory team to be of key importance in the Engineering field. Papers are selected from over 10,000 published each week from most peer reviewed journals.
Journal Reference
Solid-State Electronics, Volume 111, 2015, Pages 27-31.
Paola Zuliani, Elisabetta Palumbo, Massimo Borghi, Giovanna Dalla Libera, Roberto Annunziata
STMicro electronics, Technology R&D, via C. Olivetti 2, 20864 Agrate Brianza, Italy
Abstract
Phase Change Memory technology can be a real breakthrough for process cost saving and performances for embedded applications. The feasibility at 90 nm technology node has been solidly proven in an industrial environment and the added value of this solution demonstrated. Nevertheless, for specific applications some improvement in High Temperature Data Retention (HTDR) characteristics is needed. In this work we present the engineering of chalcogenide materials in order to increase the stability of RESET state as a function of temperature. This goal has been achieved by exploring Ge-rich compounds in the Ge–Sb–Te ternary diagram. In particular, an optimized GexSbyTezPhase Change material, able to guarantee code integrity of the memory content after soldering thermal profile and data retention in extended temperature range has been obtained. Extrapolation of data retention at 10 years for temperatures higher than 150 °C cell-level has been demonstrated, thus enabling automotive applications.
Go To Solid-State Electronics
