2> Commonly used MEMS materials
Category
Material
Property or application
Metal
Au,Al,Cu,Ni,Cr
Conductor
Silicon
Structure, semiconductor
Poly-crystalline silicon Semicondu
1) Thermal oxidation
2) --growSiniOg 2 on Si
3) Dry oxidatioSn:iO2Si2O <1150°C,
4hr>
S 2 iH 2 O ( g ) S2 i 2 O 2H
4) Wet oxidation:
5)
<
800°C~1200°C > d
o.44d Si
3> Sputtering --A momentum-exchange process <not heating> --Low temperature process --We can sputter anything onto substrate
7> Semiconductor Devices Understanding of how the basic devices used ICs operate is useful, because it provides some understanding of the objectives we have for IC technology. The most commonly used IC devices are: 1> PN Diodes 2> Bipolar Junction Transistors 3> MOS Transistors