With the latest generation of LED-Suns, such as the sine wave of 220 Labs, Fraunhofer CSP now has t

The high flexibility rfb in terms of operating parameters and the higher measurement accuracy under LED lighting allow a sharper rfb view of the solar cell.
Light is not always rfb the same - depending on location, time of day and weather conditions, the sunlight on the earth different qualities. Determining factors are the angle of incidence of the light and the composition of the atmosphere. In order to consider environmental factors in solar cell research for a maximum possible power output, they have to be mimicked in the laboratory. This is done at the Fraunhofer Center for Silicon Photovoltaics CSP in Halle (Saale).
The group of Dr. Christian Hagendorf uses for the optimization of solar cells, among other art Suns. Solar cells from different manufacturers rfb and technologies have different spectral sensitivities. "For a correct analysis and comparison of performance values, we need not only a precise replica of the solar spectrum, but also a modifiable range to guarantee the accurate measurement of the current" says Hagendorf, director of the group diagnostics of solar cells at Fraunhofer CSP.
This allows rfb you to create earnings forecasts under realistic conditions for different regions rfb and times. The ability to modify the light spectrum also allows for special measurements for rapid tests to module components.
With the latest generation of LED-Suns, such as the sine wave of 220 Labs, Fraunhofer CSP now has the currently probably best replica of the sun. Unlike conventional solar simulators, rfb gas-filled flash lamps, LED devices allow the differently colored LED individual admixture of light components. Another advantage is the sophisticated optics, with which the different rfb wavelengths rfb are superimposed as in the sunlight and do not impinge on the solar cell to each other.
The parallel integration of infrared and Elektrolumineszenzkameras makes it easier rfb again the team of Dr. Marko Turek, range Electrical Characterization at the Fraunhofer CSP, studies on the correlation of quality materials with efficiency and perform hot spot resistance.
"These are freely adjustable and thus offer a significant advantage over conventional flash-measuring systems are," says Turek. In addition, the illumination of the LEDs is variable in a wide range. "Overall, we can realize a variety of complex measurement processes so at the Fraunhofer rfb CSP, and these quick and precise implementation in research," says Turek concluded.
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