Abstract:High-κ dielectric stacks have been used to replace the conventional SiO 2 -based dielectric stacks in Flash memory cells in the 20 nm technology generation. The electron trap density in high-κ layers is orders of magnitude higher than that in SiO 2 , which introduces fast transient trapping/detrapping and affects the program/erase, retention and endurance of memory cells. Several fast pulse techniques have been developed to characterize electron traps throughout the dielectric stack, including 2-pulse and mult… Show more
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