DRIFT E-FIELD
SCATTERING (PHONONS)
DIFFUSION (GRADIENT)
Ontological Layer: Carrier Kinetics
Carrier Transport
How motion becomes electrical current
The Mechanics of Current
Energy bands define where electrons can exist; Charge Carriers are the entities. Transport is the action. This realm details how carriers actually move through the crystal lattice—driven forcefully by electric fields (Drift) or spreading naturally from high to low concentrations (Diffusion)—and how this motion collectively forms the total semiconductor current.
CARRIERS →
E-FIELD →
DRIFT (vd) →
DRIFT CURRENT |
GRADIENT (Δn) →
DIFFUSION (D) →
DIFFUSION CURRENT |
SUM →
TOTAL CURRENT (J)
The 69 Transport Nodes
Comprehensive Horizontal Mapping
GROUP I
Drift & Mobility
- 01 Carrier Motion
- 02 Carrier Transport Mechanisms
- 03 Drift
- 04 Electric Field
- 05 Drift Velocity
- 06 Mobility
- 07 Electron Mobility
- 08 Hole Mobility
- 09 Mobility Dependence
GROUP II
Carrier Scattering
- 10 Carrier Scattering
- 11 Lattice / Phonon Scattering
- 12 Ionized Impurity Scattering
- 13 Other Scattering Mechanisms
GROUP III
Diffusion
- 14 Diffusion
- 15 Concentration Gradient
- 16 Diffusion Coefficient
- 17 Electron Diffusion
- 18 Hole Diffusion
GROUP IV
Current Components
- 19 Drift Current
- 20 Electron Drift Current
- 21 Hole Drift Current
- 22 Diffusion Current
- 23 Electron Diffusion Current
- 24 Hole Diffusion Current
GROUP V
Total Current & Cond.
- 25 Total Electron Current
- 26 Total Hole Current
- 27 Total Semiconductor Current
- 28 Current Density
- 29 Electron Current Density
- 30 Hole Current Density
- 31 Conductivity
- 32 Semiconductor Resistivity
- 33 Conductivity–Carrier Relation
- 34 Mobility–Conductivity Relation
- 35 Einstein Relation
GROUP VI
Non-Equilibrium
- 36 Thermal Equilibrium
- 37 Non-Equilibrium Transport
- 38 Excess Carrier Transport
- 39 Carrier Lifetime
- 40 Generation During Transport
- 41 Recombination During Transport
- 42 Steady-State Transport
- 43 Transient Transport
GROUP VII
Injection & Continuity
- 44 Ambipolar Transport
- 45 Low-Level Injection
- 46 High-Level Injection
- 47 Carrier Concentration Profiles
- 48 Carrier Gradients
- 49 Current Continuity
- 50 Continuity Equation
- 51 Charge Conservation
- 52 Semi Transport Equations
GROUP VIII
High Field & Contacts
- 53 Temp Dependence of Transport
- 54 Field Dependence of Mobility
- 55 Velocity Saturation
- 56 High-Field Transport
- 57 Low-Field Transport
- 58 Ballistic Transport Concepts
- 59 Diffusion Length
- 60 Quasi-Fermi Levels
- 61 Quasi-Equilibrium Transport
- 62 Surface Transport Concepts
GROUP IX
Contacts & Solving
- 63 Contact Effects
- 64 Ohmic Contacts
- 65 Non-Ohmic Contacts
- 66 Semi Current–Voltage Behaviour
- 67 Transport in Uniform Semi
- 68 Transport Across Boundaries
- 69 Carrier-Transport Problem Solving