Solar Panel Micro Cracks

Shining a light on the hidden flaws of solar modules, as we explain what causes Micro cracks in Solar Panels that can be identified by Electroluminescence (EL) testing. These are cracks in the solar cells themselves, which can occur due to mechanical stress during manufacturing, transportation, or installation. Some common types of microcracks that can be made visible in EL testing images include:
Single Crack: A single, isolated crack in a solar cell.
Cell Piercing Crack: A crack that goes through the entire thickness of the solar cell.
Cross Crack: A crack that intersects with another crack, forming a cross shape.
Dendritic Crack: A crack with a branching, tree-like pattern, often caused by rapid cooling during manufacturing.
Cell Breakage Crack: A crack that leads to the complete breakage of a solar cell.
Short Circuited Cell: A cell with a defect causing a short circuit, reducing the panel's overall efficiency.
Inactive Cell Areas: Areas within a cell that are not contributing to electricity generation due to defects or damage.
Solder Fault: A defect in the soldering of the interconnects between cells, which can lead to poor electrical connections.
Cell Black Core: A defect related to the quality of the silicon wafer used to make the cell, appearing as a dark spot in the cell's core.
Wafer Impurity: Contamination or impurities in the silicon wafer, which can affect the cell's performance.
EL Intensity Differences: Variations in the brightness of different areas in the EL image, indicating inconsistencies in the cell's performance.
These defects can affect the performance and longevity of solar panels, making EL testing powerful and crucial method for quality control and maintenance for identifying microcracks and other defects in solar panels.
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SINOVOLTAICS - ZERO RISK SOLAR (Over 200 Solar PV & BESS Factories Audited)
Since 2009, Sinovoltaics has audited over 200 solar PV and battery energy storage (battery cells and modules) factories across Asia.
Our solar PV and battery energy storage component-specialized auditors are accredited with the International Register of Certificated Auditors (IRCA) and proud to support you with a comprehensive and insightful assessment of prospective suppliers by using their extensive experience in the operations management of PV and BESS factories in Asia.
Headquartered in Hong Kong, with offices in Shanghai and Ho Chi Minh City and local quality inspection and audit teams in India, South Korea, Thailand, and Turkey, we are strategically located close to all solar PV component and battery energy storage manufacturing bases and shipping ports in Asia.
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