INDEX 553
Current flow, 253
Current gain, 264
Design limitations, 265
Emitter, 249
Emitter crowding, 285
Emitter current, 253, 257
Emitter injection efficiency, 251, 263
Emitter-base diode conductance, 335
Gummel number, 259
High-frequency performance, 325
Minority carrier distribution, 256
Small-signal equivalent circuit, 333
Small-signal model, 339
Static characteristics, 252
Transconductance, 264, 338
Bloch theorem, 36
Bohr radius, 30
Dopants, 62
Boltzmann approximation, 125
Boltzmann distribution, 176
Boltzmann transport equation, 105, 517
Bose-Einstein distribution function, 99
Boson, 42
Bound states, 29
Bravais lattice, 2
Breakdown, 113, 178
Breakdown electric fields in some materi-
als, 115
Breakdown phenomena, 113
Breakdown voltage, 378, 417
Brillouin zone, 37, 39
Face-centered cubic , 39
Hexagonal lattice, 39
Built-in voltage, 149, 358, 435
Carrier freeze out, 64, 377
Carrier injection, 126
Carrier transit time, 413
Channel
Conductance, 365, 373
Confinement potential, 381
Interchannel resistance, 396
Resistance, 378
Charge centroid, 381, 385
Capacitance, 381
Charge control, 326
Charge injection, 124, 157
Charge neutrality, 63
Charge-control analysis, 318
Coherent structures, 18
Collector, 372
Collector current, 258, 336
Collector delay, 328, 331
Collector efficiency, 264
Common base, 261
Common collector, 261
Common emitter, 261
Conduction band, 44, 83
Conduction band discontinuity, 232, 378
Conductivity, 105, 523
Conservation of energy, 129
Optical transitions, 129
Conservation of momentum, 129
Optical transitions, 129
Constant energy surface
Electrons in Si, 48
Contact resistance, 378, 395
Continuity equation, 137–139
Core level, 44
Critical breakdown field, 113
Critical thickness, 21, 22, 389
Crystal momentum, 40
Crystal structure
Wurtzite, 388
Crystal structures, 3
Diamond, 3
Hexagonal close pack, 6
Zinc blende, 3
Current continuity, 137
Current crowding effect, 284
Current flow, 157
Current gain, 264, 398
Current gain cutoff frequency, 340, 413
Current transfer ratio, 251
Current-voltage characteristics, 362
Cutoff, 253
Cutoff mode, 322