Total Ionizing Dose Effects on FinFET-Based Capacitor-Less 1T-DRAMs.

Autor:	Zhang, En Xia, Fleetwood, Daniel M., El-Mamouni, Farah, Alles, Michael L., Schrimpf, Ronald D., Xiong, Weize, Hobbs, Chris, Akarvardar, Kerem, Cristoloveanu, Sorin
Předmět:	IONIZING radiation dosage FIELD-effect transistors DYNAMIC random access memory CAPACITORS ELECTRIC transients SILICON-on-insulator technology SILICON oxide COMPLEMENTARY metal oxide semiconductors METAL oxide semiconductor field-effect transistors
Zdroj:	IEEE Transactions on Nuclear Science; 12/1/2010 Part 1, Vol. 57 Issue 6, p3298-3304, 7p
Abstrakt:	We have characterized the total ionizing dose (TID) response of SOI FinFETs, fabricated in two different technologies, operated in 1T-DRAM mode, one with poly-crystalline Si gates and a SiO2 gate dielectric, and the other with metal gates and a high-K gate dielectric. These devices were programmed using both back-gate pulse and gate induced drain leakage (GIDL) programming methods. 1T-DRAM cells programmed with back-gate pulses are quite sensitive to total ionizing dose radiation, with the memory sensing margin and retention time decreasing significantly with increasing dose. In contrast, the sensing margin and retention time show high tolerance to total ionizing dose irradiation when the 1T-DRAM cells are programmed via GIDL. The sensing margin increases significantly with decreasing gate length for 1T-DRAM cells programmed via GIDL. We conclude that capacitor-less 1T-DRAMs programmed via GIDL are strong candidates for embedded memory applications for ultimately scaled CMOS devices in high-TID applications. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
Externí odkaz:	Zobrazit plný text záznamu