For a given spectral distribution, the photocurrent is linearly proportional to the illuminance ( and to the irradiance ).
12.
Data by Gullikson " et al . " indicated ~ 10 % natural variation of the photocurrent responsivity.
13.
Once the electron is in an excited state, it can escape into the continuum and be measured as photocurrent.
14.
To externally measure a photocurrent the electrons need to be extracted by applying an electric field to the quantum wells.
15.
In particular, the photocurrent generated in each layer needs to be matched, otherwise electrons will be absorbed between layers.
16.
Enhancements of more than two orders of magnitude have been observed in the photocurrent from adding SWCNTs to the P3OT matrix.
17.
Using parts of the ChR1 sequence, photocurrent amplitude was later improved to allow excitation of two neuronal populations at two distinct wavelengths.
18.
These devices can control a few mA, and have a quasilinear dependence of photocurrent on the light intensity at a constant voltage.
19.
With this work, they have shown images with identical contrast which proves that the photocurrent variations are less related to spatial absorbance variation.
20.
Photocurrent matching was achieved through adjustment of NiO and TiO 2 film thicknesses to control the optical absorptions and therefore match the photocurrents of both electrodes.
