Heterojunction Band Offset Calculator
Partition a heterojunction bandgap difference into conduction- and valence-band offsets using a material-specific empirical fraction.
Description
Partition a heterojunction bandgap difference into conduction- and valence-band offsets using a material-specific empirical fraction.
Heterojunction Band Offset Calculator is a focused tool for the following task. Partition a heterojunction bandgap difference into conduction- and valence-band offsets using a material-specific empirical fraction. It reports Conduction band offset, Valence band offset from the values you provide rather than inventing measurements, coefficients, or professional judgment that are not part of the input.
When to use Heterojunction Band Offset
Use this semiconductor calculation for first-order device, material, fabrication, interconnect, packaging, or reliability estimates when every coefficient and unit convention is known.
- Bandgap difference (eV)
- Required number in eV. Difference between the two semiconductor bandgaps.
- Conduction-band fraction (ratio)
- Optional number in ratio. Empirical fraction of the bandgap discontinuity assigned to the conduction band.
The cited overview of Band gap supplies background for the terminology and domain context used by this tool.1
How Heterojunction Band Offset works
Partition a heterojunction bandgap difference into conduction- and valence-band offsets using a material-specific empirical fraction. Inputs are interpreted exactly in the displayed units and the calculation returns the following fields without presentation rounding.
- Conduction band offset (eV)
- Returned number in eV. Conduction band offset.
- Valence band offset (eV)
- Returned number in eV. Valence band offset.
Limitations and assumptions
- Material composition, geometry, process history, temperature, electric field, bias, interfaces, parasitics, and fitted parameter ranges can invalidate a compact semiconductor model.
- Bandgap difference must be at least 5e-324.
- Conduction-band fraction must be at least 5e-324.
- Conduction-band fraction must be no greater than 0.9999999999999998.
- Use finite inputs in the displayed units, preserve source measurements and assumptions, and independently verify consequential decisions.
Alternative or Complementary approaches
Compare the estimate with measured process data, current device documentation, and a higher-fidelity circuit, field, thermal, quantum, or TCAD model when the decision requires it.
References
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Band gap — Wikipedia contributors
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