1 research outputs found
Spectral response measurements of Perovskite solar cells
A new spectral response measurement routine is proposed that is universally applicable for all perovskite devices. It is aimed at improving measurement accuracy and repeatability of spectral response curves and current-voltage curve spectral mismatch factor corrections. Frequency response, effects of preconditioning as well as dependency on incident light intensity
and voltage load on spectral response measurements are characterized on two differently structured perovskite device
types. It is shown that device preconditioning affects the spectral
response shape, causing errors in spectral mismatch factor corrections of up to 0.8% when using a reference cell with a good
spectral match and a class A solar simulator. Wavelength dependent response to incident light intensity and voltage load is
observed on both device types, which highlights the need to measure at short circuit current and maximum power point to
correct spectral mismatch. The method with recommendations given ensures the correct measurement conditions are applied and
measurements are corrected for instability in performance