A SURVEY OF SEMICONDUCTOR DEVICES
A SURVEY OF SEMICONDUCTOR DEVICES A SURVEY OF SEMICONDUCTOR DEVICES
10 18 10 16 10 14 10 12 10 10 10 8 10 6 10 4 10 2 1 10 –2 10 –4 10 –6 10 –8 SULFUR DIAMOND (PURE) FUSED QUARTZ WHAT IS SEMICONDUCTOR? GLASS NICKEL OXIDE (PURE) RESISTIVITY ρ (Ω-cm) GERMANIUM (Ge) SILICON (Si) GALLIUM ARSENIDE (GaAs) GALLIUM PHOSPHIDE (GaP) CADMIUM SULFIDE (CdS) SILVER COPPER ALUMINUM PLATINUM BISMUTH 10–18 10–16 10–14 10–12 10–10 10–8 10–6 10–4 10–2 1 102 104 106 108 CONDUCTIVITY σ (S/cm) INSULATOR SEMICONDUCTOR 0.1 eV < Eg < 4 eV METAL 8/39 K. Ng
WHY IS SEMICONDUCTOR USEFUL? SOLID STATE, SINGLE CRYSTAL (RELIABILITY, DENSITY) GOOD CONDUCTIVITY (VARIABLE) DOPING CAN BE DEPLETED => SPACE CHARGE => POTENTIAL BARRIER (NOT IN METAL) FIELD CAN PENETRATE (NOT IN METAL) ENERGY GAP => PHOTONIC DEVICES (NOT IN METAL) ELIMINATE VACUUM TUBE ELIMINATE INSULATOR ELIMINATE METAL 9/39 K. Ng
- Page 1 and 2: IEEE EDS Distinguished Lecture A SU
- Page 3 and 4: BASIC ELECTRONIC COMPONENTS L -----
- Page 5 and 6: HOW VACUUM TUBES WORK HEATER I ELEC
- Page 7: HIGH POWER DISSIPATION LOW RELIABIL
- Page 11 and 12: Examples: Some are device variation
- Page 13 and 14: “All it Takes is Concentration”
- Page 15 and 16: American Heritage WHAT IS DIODE?
- Page 17 and 18: 1.Diodes Rectifiers Neg Resist N-sh
- Page 19 and 20: 1.Diodes Rectifiers Neg Resist N-sh
- Page 21 and 22: S UNIPOLAR VS. BIPOLAR DEVICES 3-TE
- Page 23 and 24: 1.Diodes Rectifiers Neg Resist N-sh
- Page 25 and 26: 1.Diodes Rectifiers Neg Resist N-sh
- Page 27 and 28: 1.Diodes Rectifiers Neg Resist N-sh
- Page 29 and 30: 1.Diodes Rectifiers Neg Resist N-sh
- Page 31 and 32: 1.Diodes Rectifiers Neg Resist N-sh
- Page 33 and 34: WHY Si (OVER OTHER SEMICONDUCTORS)?
- Page 35 and 36: MAJOR DEVICE & CIRCUIT MILESTONES V
- Page 37 and 38: CURRENT-CONDUCTION MECHANISMS OF SE
- Page 39: CONCLUDING REMARKS • Identified ~
WHY IS <strong>SEMICONDUCTOR</strong> USEFUL?<br />
SOLID STATE, SINGLE CRYSTAL (RELIABILITY, DENSITY)<br />
GOOD CONDUCTIVITY (VARIABLE)<br />
DOPING CAN BE DEPLETED => SPACE CHARGE => POTENTIAL BARRIER<br />
(NOT IN METAL)<br />
FIELD CAN PENETRATE (NOT IN METAL)<br />
ENERGY GAP => PHOTONIC <strong>DEVICES</strong> (NOT IN METAL)<br />
ELIMINATE<br />
VACUUM TUBE<br />
ELIMINATE<br />
INSULATOR<br />
ELIMINATE<br />
METAL<br />
9/39 K. Ng
Change language