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Constant photocurrent method and time-of-flight measurements applied to polymer blends

“…The CPM setup is a dc-CPM setup in which the light reaching the sample does not pass through a chopper and the photocurrent is detected with an amperemeter. This is opposed to ac-CPM setups where the photocurrent is lock-in detected [6]. In our experiment lock-in detection was used for measuring the intensity of the light.…”

X-ray spectroscopy of the valence band electronic structure in high-deposition-rate a-Si:H

“…A tungsten-halogen lamp plus grating monochromator were used to scan across the a-Si:H bandgap. The photocurrent was measured in DC mode in order to obtain the optimal image of the localized states distribution [5]. As indications for this distribution and for the defect density, the Urbach slope of the absorption data, respectively the absorption coefficient at 1.2 eV is used.…”