### 2.2.3 Summary to: 2.2. Silicon

| Silicon, and only Si, enables integrated circuits of amazing complexity, with billions of transistor on one chip |  |
|  | Two kinds of integrated transistors exist. MOS - the absolute majority bipolar - if speed counts |
|  | Wafers diameter are up to 300 mm (2007), smallest (lateral) structures on a wafer are in or below the 100 nm range. |
|  | Integrated circuits are packaged chips with some connections to the outside world |
| Besides integrated circuits, Si is increasingly used for other semiconductor products: |  |
|  | Solar cells based on Si consume more Si than IC's, and demand rapidly increasing Si production. The key point of Si solar cell technology is to have high efficiencies h at low prices. |
|  | Microelectronic and micro-mechanic (and micro-optics and micro-fluidic and...) = MEMS systems find increasing uses for many tasks. |
Exercise 2.2-1
All Class Exercises to 2.2

© H. Föll (Semiconductor Technology - Script)