An efficient new approach to sEQE spectroscopy

In this application note, we demonstrate a new approach to sensitive external quantum efficiency (sEQE) characterization as a means to measuring
the lowest EQE values possible for organic solar cell and photodetector technology research. We specifically discuss:

• Conventional instrumentation used for an sEQE measurement
• The alternate approach, which employs a synchronous source measure system set up to perform  DC I-V sweeps and lock-in detection of a device's induced AC photocurrent
• The results of an sEQE measurement performed on a C₆₀:ZnPc organic solar cell device using our M81-SSM platform