Calibration unit

Degradation and poor positioning of the reference standards is a major uncertainty in IQE-measurements. The manual handling is avoided by the calibration unit, which holds up to four standards for EQE and reflectance. The system therefore needs to be re-calibrated only once a year using standards that have recently been calibrated at the PTB.

The EQE standard also serve as an internal reference solar cell for IV measurements to which the calibration of your external reference solar cells can be transferred. The latter thus need to be re-measured every few months only.