BEOL Integrated Ferroelectric HfO₂-Based Capacitors for FeRAM: Extrapolation of Reliability Performance to Use Conditions

Si doped HfO2 based ferroelectric capacitors integrated into Back-End-Of-Line (BEOL) 130 nm CMOS technology were investigated in regard to critical reliability parameters for their implementation in non-volatile one-transistor one-capacitor ferroelectric random-access memory applications. The assessed reliability parameters are electric field, capacitor area, and temperature and are evaluated on single and parallel structured capacitors to understand their respective impact on wake-up, fatigue, imprint, and retention.