And More Oxides - Microelectron...: Oxides, Oxides,

) has historically dominated the industry, the push for smaller, faster, and more efficient chips has ushered in a new era of "High-K" and multi-component oxide materials. 1. The Classic Foundation: Silicon Dioxide ( SiO2cap S i cap O sub 2 For decades, SiO2cap S i cap O sub 2

) creates thin, high-quality layers for gates, while wet oxidation (adding H2Ocap H sub 2 cap O ) grows much faster to create thick isolation layers. Oxides, oxides, and more oxides - Microelectron...

layers became so thin (under 20 Å) that electrons began "tunneling" through them, causing massive power leaks. ) has historically dominated the industry, the push

The oxide layer prevents DC current from flowing into the gate, which drastically reduces power consumption in MOSFETs. 2. High-K Dielectrics: Breaking the Scaling Wall As transistors shrank, SiO2cap S i cap O sub 2 layers became so thin (under 20 Å) that