Photovieillissement
- Principe -
UV light exposure is responsible for many molecular and genetic changes on different materials and living cells. Sunlight that irradiates Earth’s surface contains both UV-A and UV-B rays as UV-C one are fully blocked by the ozone layer:
- UV-A rays from 320nm to 400nm close to visible lighting, penetrates deeply into many materials and skin.
- UV-B rays between 280 to 320nm which represent 5% of the solar radiation are more energetic and dangerous than UV-A but mainly operates on surface.
UWAVE LED lightings systems which include a mix of visible, UV-A and UV-B wavelengths can simulate effectively an accelerated solar emission spectra and allow high-precision adjustment and homogeneity ranges. Many scientists are now using this technology to predict and evaluate the responsive behavior and changes of polymer materials, PV modules and living cells to artificial solar radiation.
- Example of Applications -
Photoaging of Photovoltaic Modules and UV Resistance Testing
In the photovoltaic industry, photoaging tests are used to evaluate the durability of solar modules and photovoltaic cells subjected to prolonged exposure to sunlight and UV radiation. These accelerated aging tests simulate years of real-world operation to assess material stability, energy performance, and degradation phenomena such as efficiency loss, encapsulant yellowing, and cell microcracking.
Solar and UV Resistance Testing of Materials
Solar radiation resistance tests are used to analyze the behavior of materials exposed to UV light under outdoor conditions. They help measure the stability of polymers, technical glass, coatings, and composite materials during prolonged exposure, ensuring their durability, mechanical integrity, and chemical resistance over time.
Light Absorption Testing on Solar Cells
Tests related to the effects of light absorption on solar cells are used to study the impact of radiation on the performance of photovoltaic devices. They help evaluate efficiency losses caused by the degradation of semiconductor materials and support the optimization of cell design to improve long-term performance and stability.
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