PV PROCESSEQUIPMENT
Edwards Chemical Management Europe Ltd www.edwards-cme.co.uk
Pre wash deglue product
Edwards-CME have recently announced the launch of their pre- wash deglue product range to the wafer manufacturing community following its release from an unique supply agreement with one of the world’s leading wafering companies.
The Edwards pre-wash & deglue products’ most outstanding features are their high throughput capacity combined with extended processing time. The largest machine achieves throughputs of over 9000 wafers per hour whilst running a typical 7 stage recipe.
It is, however, the processing time available within Edwards’ multi-bath system which makes this product line stand out from competitive offerings. At 9000 wafers per hour each wafer block has the potential to be undergoing cleaning processes for up to 90 minutes using multi-frequency ultrasonics, agitation and water jets in three progressively cleaner process baths. In addition each block can be programmed to spend up to 30 minutes in a deglue bath followed by up to 30 minutes of rinsing.
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These extended processing times result in cleaner wafers being delivered to the downstream process increasing yield and reducing the need for inline final washing.
Integral surfactant delivery, deglue chemistry dispensing and replenishment combined with temperature, pressure & pH monitoring ensure that Edwards’ machines run with minimal intervention in the 24/7/365 factory environment. A dual robot option and choice of left to right or right to left processing assist throughput balancing and factory layout respectively. Maintenance requirements are minimal with uptime greater than 95%.
Edwards’ product range includes options which cater for a wide range of block sizes and configurations to suit all monocrystalline and multicrystalline wafer blocks.
Load and unload trolleys combined with robotic docking systems provide a seamless integration with both saws and downstream process and can be tailored to suit specific interfacing needs. The robotic handling system within the machines and associated trolleys utilise a cassette system to contain and protect the wafer blocks from damage whilst being loaded, processed and unloaded.
Additional ‘soft landing’ features in the deglue bath further protect wafers from damage whilst degluing to deliver optimum product yield.
ISRA VISION www.isravision.com
Inspection systems increase customer satisfaction
For the last 20 years, ISRA VISION has been a leading global supplier of high-speed surface inspection and quality inspection systems used to monitor the entire process chain from incoming materials inspection to final inspection. ISRA inspection tools, which for a long time have been considered a proven technology in many different areas such as for inspecting optical display films, thin films or in glass inspection technology, are also the selection of choice when it comes to quality control and process optimization in the manufacturing of solar glass.
Solar cells and wafers:
Inspection of the position, dimensions, edges, breakage, color and imprint as well as electroluminescence inspection for cell defects (e.g. micro-cracks, breaks in contact fingers)
Thin-film solar cells:
Inspection of coating, structure, edges, typical glass defects
Solar modules:
Inspecting for completeness, position, size, geometry, string contacts, busbars, back boxes, solar cell position, glass defects and also electroluminescence inspection
Curved glass / curved mirrors:
Optical inspection of the focal point deviation
Cover glass and textured glass:
Inspection of defects in the glass, edges and size / dimensions
The systems are available for all module types and sizes, web widths as well as production speeds. By systematically introducing new developments and product enhancements, the systems and equipment are adapted and expanded to meet the continuously growing demands of customers.
New features include, for example, 100% in-line monitoring of the color gradient of coated glass and the reliable detection of even the most difficult surface defects such as open and alongated bubbles in textured glass - and the systems do so even under the most difficult conditions directly after the cooling zone. What's more, with them it is possible to carry out quality inspections of modules by checking for breakage, cracks, edge defects, completeness, gaps, the existence of solder ribbons and they even can be expanded to inspect cell defects via electroluminescence.
www.solar-pv-management.com Issue II 2010
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