Solar Cell Inspection
The efficiency and optical yield of a solar cell can be significantly impacted by the presence of defects in the raw silicon material. These may include micro-cracks, saw marks, edge defects and inclusions. Machine vision systems are used to enhance quality standards in solar cell manufacturing systems, by detecting flaws in the raw silicon materials. As solar cells require different panels to work together, if inspection systems do not accurately detect defects early whole modules can be compromised.
The success of automated optical inspection systems is largely reliant on the quality of illumination utilized. It is essential that illumination is provided at the correct wavelength, is of adequate power and provides uniform light.
ProPhotonix lasers and LED lighting can be used in inspection processes like:
- 3D wafer sawmark measurement
- Wafer micro crack inspection
- 3D surface measurement
- Wafer geometry inspection