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The integration of La, Gd, and Lu aluminates in a Charge-Trapping Flash (CTF) memory flow as alternative trapping materials is evaluated. It is found that, in order to control the mixing of the aluminates with the tunnel oxide, nitride (for Gd) or nitride + oxide (for La and Lu) buffer layers have to be used. It is also found that during the post-deposition annealing treatments, the nitride buffer...
In this letter, the inter-poly dielectric (IPD) thickness, scaling, and reliability characteristics of Al2O3 and HfO2 IPDs are studied, which are then compared with conventional oxide/nitride/oxide (ONO) IPD. Regardless of deposition tools, drastic leakage current reduction and reliability improvement have been demonstrated by replacing ONO IPD with high-permittivity (high-kappa) IPDs, which is suitable...
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