ISRA Introduces Next-Generation Non-contact PL Inspection System

The main challenge facing PV production now is the continuous optimization of solar cell efficiency while also reducing production costs. ISRA SOLAR VISION is a German company that provides state-of-the-art, high-performance inspection systems that help photovoltaic manufacturers overcome the challenges they face. With the introduction of a new generation of non-contact photoluminescence (PL) detection systems, this leading supplier of similar solar energy detection systems has achieved major breakthroughs in high-accuracy, high-speed detection of solar cells and silicon wafers. : SOLARSCAN-YIELDMASTER PL offers the industry's fastest non-contact photoluminescence detection, the lowest false detection rate, and the most accurate defect classification for large-scale solar cells. The 100% non-contact measurement method avoids cracking and crushing caused by electrical contact. These phenomena occur in conventional EL or PL series resistance tests. Isra's latest inspection technology can detect flaws that are invisible to the human eye and can result in increased solar cell production and significant cost reductions. In addition, there are enough reasons for the global PV industry to apply the intelligent ISRA SOLAR VISION inspection solution.

Based on the highest repeatability and detection rate, the new generation of high-speed coaxial YIEL DMASTER PL detection system can provide the industry's highest detection performance. Series resistance and other efficiency measurements are performed in a non-contact manner, which avoids defects (cracking, cracking, etc.) caused by electrical contact elements.

Innovative photoluminescence detection methods can describe the characteristics of solar energy elements in mass production and can provide reliable material defects (displacements, material changes, foreign matter in silicon, etc.) and process defects (hidden cracks, electrode breaks, inefficient areas , scratches, etc.) For high-speed operation, a dynamic configuration is available. The modular system can be used on solar cells and silicon wafers, enabling battery manufacturers to improve the quality control of basic materials and significantly increase the quality of production.

The new generation of PL systems can detect and classify a large spectrum of properties, including but not limited to visible and invisible cracks, cracks, shunts, finger electrode interruptions, leakage, series resistance, dark and inactive areas, black edges, Sintering defects, displacements, boundaries, clusters, hot spots, scratches, debris, contamination, and material defects in solar cells and wafers. The uniform illumination of the 170x170 mm full field guarantees many advantages over the EL detection system and the conventional PL detection system.

Solar cell manufacturers can benefit from optimization parameters of the ISRA high-speed PL detection technology: Compared with the traditional PL method, the new YIEL DMASTER-PL system can reduce the imaging time by 8 factors. Since neither high-precision positioning nor contact time is required, the processing time can be significantly reduced. With this system, 3,600 solar cells can be detected per hour, which in turn saves a lot of time and costs.

Another major breakthrough in multi-spectral PL detection is that the false detection rate has been reduced by more than 6 factors to less than 0.5%, which has significantly increased the production of non-antimony batteries. The new PL inspection system supports solar manufacturers to increase production costs by reducing production costs and improve product quality, thereby increasing production efficiency.

The modular structure of the new PL system allows it to be integrated into new or existing production lines, enabling various testing requirements for solar cells and silicon wafers. YIELDMASTER-PL helps battery manufacturers reliably and quickly detect hidden defects that are invisible to the human eye, while also providing the most accurate defect classification. Automatic PL inspection using ISRA SOLAR VISION technology can bring high quality products, low production losses, high production capacity, and high customer satisfaction. (Compilation: Liu Lu)

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