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FeFET: A versatile CMOS compatible device with game-changing potential

: Beyer, S.; Dünkel, S.; Trentzsch, M.; Müller, J.; Hellmich, A.; Utess, D.; Paul, J.; Kleimaier, D.; Pellerin, J.; Müller, S.; Ocker, J.; Benoist, A.; Zhou, H.; Mennenga, M.; Schuster, M.; Tassan, F.; Noack, M.; Pourkeramati, A.; Müller, F.; Lederer, M.; Ali, T.; Hoffmann, R.; Kämpfe, T.; Seidel, K.; Mulaosmanovic, H.; Breyer, E.T.; Mikolajick, T.; Slesazeck, S.


Institute of Electrical and Electronics Engineers -IEEE-:
IEEE International Memory Workshop, IMW 2020. Proceedings : Dresden, Germany, 17-20 May 2020, Virtual On-Demand Event
Piscataway, NJ: IEEE, 2020
ISBN: 978-1-7281-6306-2
ISBN: 978-1-7281-6307-9
International Memory Workshop (IMW) <12, 2020, Online>
Conference Paper
Fraunhofer IPMS ()

With the discovery of ferroelectricity in HfO 2 based thin films and the co-integration of ferroelectric field effect transistors (FeFET) into standard high-k metal gate (HKMG) CMOS platforms, the FeFET has emerged from a theoretical dream to an applicable reality. This paper summarizes the status of GLOBALFOUNDRIES FeFET technology and some of its potential applications. We show excellent 0.12μm 2 SRAM yields of our mature 28nm CMOS platform, with co-integrated FeFETs, exhibiting a solid memory window of 1.4V. In contrast to conventional embedded memory cells, the FeFET can be integrated like a regular 26Å EOT transistor, exhibiting two reversibly programmable VT states, while offering full design flexibility. We show state of the art across wafer VT variability of the programmed and erased states of the FeFETs and discuss its layout-dependence. Embedded size-competitive FeFETs already allow solid separation of the memory states, approaching a mature 6Sigma distribution. Reasonable endurance and stable data retention are demonstrated. Moreover, an outlook of this technology beyond the von Neumann computing will be discussed, considering some of the various applications of this new, versatile device.