Low voltage (1.2V) and high performance mobile DRAM device technology with dual poly-silicon gate using plasma nitrided gate oxide

The plasma nitrided gate oxide process has been developed and applied for mobile DRAM with low operating voltage. As a result, we confirm that plasma nitrided gate oxide can block the boron penetration in DRAM, which has a higher thermal budget than other devices. The nitrogen bonding status and profile are investigated to check the change in transistor and gate oxide characteristics.