Use this semiconductor calculation for first-order device, material, fabrication, interconnect, packaging, or reliability estimates when every coefficient and unit convention is known.

External quantum efficiency (%)

Required number in %. External quantum efficiency.

Photon flux (cm^-2 s^-1)

Required number in cm^-2 s^-1. Incident photon flux on the cell.

The cited overview of Solar cell supplies background for the terminology and domain context used by this tool.^[1]

Compute the short-circuit current density of a solar cell from incident photon flux and external quantum efficiency. Inputs are interpreted exactly in the displayed units and the calculation returns the following fields without presentation rounding.

Jsc (mA/cm^2)

Returned number in mA/cm^2. Short-circuit current density.

• Material composition, geometry, process history, temperature, electric field, bias, interfaces, parasitics, and fitted parameter ranges can invalidate a compact semiconductor model.
• External quantum efficiency must be at least 0.
• Use finite inputs in the displayed units, preserve source measurements and assumptions, and independently verify consequential decisions.

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.

• Solar Cell Efficiency Calculator

  Compute solar cell power conversion efficiency from short-circuit current density, open-circuit voltage, fill factor, and incident power density.

• Solar Cell Voc Calculator

  Compute the open-circuit voltage of a solar cell from its short-circuit and dark saturation current densities.

• Laser Slope Efficiency Calculator

  Compute laser slope efficiency in watts per ampere from differential quantum efficiency and photon energy, where W/A numerically equals the efficiency fraction times photon energy in electronvolts.