AC LEC 17-10 - Lecture 17 - Compound Semiconductors and...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture 17 - Compound Semiconductors and Electrical Properties of Ceramics GaAs BaTiO 3 Compound Semiconductors II-VI and III-V Dielectrics capacitors insulators thermistors Piezoelectrics transducers accelerometers
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Compound Semiconductors Common Type: MX M: More electropositive: Group III or Group II X: More electronegative: Group V or Group VI III-V: GaP, GaAS, InP, InSb II-VI: ZnS, ZnSe, CdSe, CdTe, HgSe, HgTe
Background image of page 2
Structure of Compound Semiconductors Example: ZnS (Zn: Red atoms, S: Gold atoms) Figure 1: S FCC lattice with Zn in tetrahedral sites (half) Figure 2: Zn FCC lattice with S in tetrahedral sites (half) Two inter-penetrating FCC lattices Analogous to Diamond Cubic structure
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Properties of Compound Semiconductors
Background image of page 4
Trends in Compound Semiconductors Increase in molecular mass: E g decreases Electron mobility increases Lattice constant increases III-V versus II-VI: II-VI has greater Ionic Bonding II-VI has higher E g II-VI has lower electron mobility
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/26/2010 for the course MP DKFJN taught by Professor Paulsmith during the Spring '10 term at Aarhus Universitet, Aarhus.

Page1 / 22

AC LEC 17-10 - Lecture 17 - Compound Semiconductors and...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online