Selective-Emitter Resistance
Calculate selective-emitter sheet resistance and compare it with a baseline.
Description
Sheet resistance relates uniform-layer resistivity to thickness.
Sheet resistance relates uniform-layer resistivity to thickness. Comparison with a baseline expresses relative reduction.1
Calculate selective-emitter sheet resistance and compare it with a baseline.
When to use Selective-Emitter Resistance
Use this tool to calculate selective-emitter sheet resistance and compare it with a baseline.
Prepare the optical measurements, geometry, fitted coefficients or caller-selected thresholds requested. Confirm wavelength, radius/diameter, pulse-width, angle and unit conventions before running the calculation.
How to use Selective-Emitter Resistance and understand its results
- Prepare the optical measurements, geometry, fitted coefficients or caller-selected thresholds requested. Confirm wavelength, radius/diameter, pulse-width, angle and unit conventions before running the calculation.
- Enter emitterResistivityOhmMeters, emitterThicknessMeters, baselineSheetResistanceOhmsPerSquare using the field table and calculation rules, then run the tool.
- Read emitterSheetResistanceOhmsPerSquare, resistanceRatio, reductionPercent. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| emitterResistivityOhmMeters | Emitter resistivity (Ω·m) | number; minimum: 0 | Required |
| emitterThicknessMeters | Emitter thickness (m) | number; minimum: 0 | Required |
| baselineSheetResistanceOhmsPerSquare | Baseline sheet resistance (Ω/□) | number; minimum: 0 | Required |
Enter nonnegative resistivity and positive thickness and baseline sheet resistance. Return sheet value, ratio and signed percentage reduction.
sheetResistance=resistivity/thickness; reduction%=100(1−sheet/baseline) Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| emitterSheetResistanceOhmsPerSquare | Emitter sheet resistance (Ω/□) | number; minimum: 0 |
| resistanceRatio | Emitter-to-baseline resistance ratio | number; minimum: 0 |
| reductionPercent | Sheet-resistance reduction (%) | number |
{
"input": {
"emitterResistivityOhmMeters": 0.001,
"emitterThicknessMeters": 0.00001,
"baselineSheetResistanceOhmsPerSquare": 200
},
"output": {
"emitterSheetResistanceOhmsPerSquare": 100,
"resistanceRatio": 0.5,
"reductionPercent": 50
}
}Limitations and assumptions
Nonuniform doping, contacts and photovoltaic performance are not modeled.
Numeric inputs must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use Decoy-State Intensity Score: Score supplied signal and decoy intensities from observed gains; this is not a security proof. For a complementary task, use Diode-Stack Heat Flux: Calculate diode-stack waste heat and cooled-footprint heat flux.
References
-
Selective-Emitter Resistance — tool.io
Similar or alternative tools
- Decoy-State Intensity Score
Score supplied signal and decoy intensities from observed gains; this is not a security proof.
- Diode-Stack Heat Flux
Calculate diode-stack waste heat and cooled-footprint heat flux.