LumiSolar-Outdoor system

The award-winning LumiSolarOutdoor system enables to investigate the quality of solar modules on-site. Defects can be identified quickly. Modules don‘t need to be demounted from their substructure. Measurements can be performed directly in the solar park or at rooftop PV installation after twilight or during the night. In contrast to other systems the LumiSolar-Outdoor system does not require a dark box or enclosure. It is the first system capable of performing measurements in the open air, thus saving time and cost. Moreover damages due to transportation are prevented.
There are two versions of the LumiSolar-Outdoor system available. A battery powered equipment enables to measure single solar modules without the need of an external power supply, providing greatest flexibility. A complete string of solar modules can be measured in a stepwise procedure using the line-powered Lumi-SolarOutdoor system if an external power supply is accessible. The LumiSolarOutdoor Line-powered allows a higher inspection throughput.

Solar cells and solar modules suffer from a variety of invisible defects which reduce their output power and long-term stability. The highly sensitive Inspection Systems from greateyes image these problems. This allows you to optimize the production, increase output power and reduce overall costs.
Inspection of Wafer, Solar Cells & Modules

	Electroluminescence An external current is applied to the solar cell or module using its electrical contacts. The invisible electroluminscence radiation emitted by the solar cell or module is detected by a highly sensitive camera.
	Photoluminescence The solar cell or wafer is excited by an intensive light source. No electrical connections to the solar cell are necessary. The invisible photoluminescence radiation emitted by the wafer or solar cell is detected by a highly sensitive camera.

Advantages of Electroluminescence (EL) and Photoluminescence (PL) Inspection 

• EL and PL are non-destructive methods
• Measurements deliver detailed information about defects and their location
• EL and PL provide a high informative content, many types of defects can be clearly identified
• Fast measurement on a second timescale
• EL can be used to investigate small cells as well as large areas made from mono-Si, poly-Si, a-Si, micro-Si, CIGS, CIS, CdTe
• Method can be integrated in the production process (in-line)
• EL and PL are also well suited for research and development of new photovoltaic devices

Differences between Electroluminescence (EL) and Photoluminescence (PL) Inspection