Newport’s Photoresponse Mapping Kit is designed to scan a photovoltaic cell up to 200 cm2 with a monochromatic beam of light and map the cell’s response to that light. Various wavelengths can be employed, thus the contribution to photo current by the cell at different depths can be probed. The kit comes with example software which displays the photoresponse map as a 3D surface and as a contour plot. Researchers developing a photovoltaic process can quickly learn important information about the uniformity of response over the surface of the cell and visualize flows.
Note: computer and stages are not included in the price of this kit. Please select and add to your order two (M-)ILSXXXCC series stages, determined by your XY area requirement. An XPS-C2 controller and two XPS-DRV01 are included in the (M-)PRM-KT. Example LabVIEW software tested on Windows XP OS is provided with the kit.
For a full description of the experiment, please see Application Note 40 .
Click on images below to enlarge.
Schematic diagram of the set-up. P - polarizer, WP - _ wave plate, PD - photodiode, F - filter wheel, M - turning mirror, L - focusing lens, BS - beamsplitter.
A picture of the PV cell scanner. XPS motion controller not shown. BS - beamsplitter. P - polarizer, WP - _ wave plate, PD - photodiode, F - filter wheel, M - turning mirror, L - focusing lens, BS - beamsplitter
Measured EQE% of the various PV cells by the Newport QE/IPCE Measurement Kit. Vertical color lines correspond to wavelengths of the lasers used in the experiment.
Photograph of the Si cell and photocurrent maps at 532 nm, 375 nm and 632nm.
A photoresponse scan of the experimental CIGS PV cell. A drop off of the signal is seen in the upper right-hand corner even though upon visual inspection the cell appeared to be uniform. The colors represent photocurrent and are in arbitrary units.
Photograph (a) and photocurrent maps of an organic PV cell at different wavelengths: 532 nm (b), 375 nm (c) and 632 nm (d).
The example software user interface is shown. A 16mm x 16mm scan is shown.
