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Why does silicon dioxide make silicon useful for electronic devices?

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electron hole: movement — materials science Movement of an electron hole in a crystal lattice.

In the context of materials science and electronics, silicon dioxide (silica) is essential because it serves as a critical electrical insulator.1

During the fabrication of integrated circuits and computer chips, complex layers of circuitry are built upon a silicon wafer. Silicon dioxide is used to provide necessary electrical insulation between these various layers, preventing unwanted electrical contact and ensuring the device functions correctly. Additionally, a final layer of this glass-like material is often applied to the completed wafer to provide protection.1

While silicon itself is a vital semiconductor that can be doped to create n-type and p-type regions for transistors, it is the ability to form a stable, insulating layer of silicon dioxide on its surface that makes silicon uniquely suited for modern electronic manufacturing.21