The non-ideal characteristics at the interfaces of anti-ferroelectric (AFE) film and electrodes will greatly affect the potential performance in the way to embedded dynamic random-access memory applications. In this paper, we have proposed a high-performance AFE TiN/HfxZr1−xO2/TiN capacitor fabricated by fully atomic layer deposition grown and alcohol-thermal high-pressure annealing methods that have been employed to avoid exposure to the ambient atmosphere and cure the interface defects induced by the inevitable oxidization of electrodes. Due to the high improvement of the interface quality, the capacitors based on ultra-thin (∼6 nm) AFE film show competitive memory performances, such as low operating voltage (−0.6/1.8 V), high speed (10 ns), long retention time (103 s), and high endurance (1012). The final benchmark demonstrates that the proposed AFE TiN/HfxZr1−xO2/TiN capacitor is a promising candidate toward the next generation high-speed and high-density embedded memory.
Self-rectifying memristor has no need for selector devices, but possess
the one-way transmission behavior and multi-level non-volatile memory
characteristics, which makes it promising candidate for electronic
synapse. In this letter, we propose a novel self-rectifying memristor
based on Pt/Hf0.5Zr0.5O2/TiN structure. The devices show large memory
window (104) and high rectifying ratio (104), which can block the sneak
current in passive crossbar array without any additional hardware
overhead. Moreover, the devices demonstrate excellent multi-level states
modulation capability, low power consumption, high endurance and long
retention. The final benchmark demonstrates that the proposed
Pt/Hf0.5Zr0.5O2/TiN self-rectifying memristor is a promising candidate
for electronic synapse application.
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