Demonstration of Ultra-thin Ferroelectric/dielectric and Anti-ferroelectric/dielectric Bilayers for Future DRAM Cell Capacitors
2023 7th IEEE Electron Devices Technology & Manufacturing Conference (EDTM)(2023)
摘要
We developed ultra-thin bilayers of ferroelectric/ /dielectric (FE/DE) and anti-ferroelectric/DE (AFE/DE) using
$\text{Hf}_{1-\mathrm{x}}\text{Zr}_{\mathrm{x}}\mathrm{O}_{2}$
, for use as DRAM cell capacitors. We optimized the thickness and composition of FE/DE and AFE/DE bilayers, in order to improve stored charges with the suppression of remnant charges. In addition, we fabricated 1X nm DRAM cells using the optimum condition of FE/DE and AFE/DE capacitors, and demonstrated their operation in DRAM cells.
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关键词
Ferroelectric, Anti-ferroelectric, DRAM, and Capacitors
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