SOLARAWARDS2011 SHORTLISTED
PV Process Improvement Award
process unit avoids the later shrinkage. By special screw and flat die design the material will be molten very carefully.
Innovation No calendar, no annealing, no interlayer, no carrier layer is necessary.
Customer Benefits EVA extrusion line
Extrusion system for manufacturing EVA encapsulant
Product Challenge The production of EVA on conventional extrusion systems which are using calendars the production speed is limited because the EVA film is very sensitive to get tension included.
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This tension leads to a strong shrinkage after heat up the film again during the laminating process. Conventional extrusion systems are using annealing ovens to eliminate the shrinkage.
The Breyer “process unit” allows a higher speed compared to a calendar production by keeping the tension resp the shrinkage much lower. No annealing devices are necessary.
Due to a special surface of the EVA film no interlayer or carrier paper is necessary. In this way the new process safes space, resources and energy.
Problem Solved
In the downstream process the way of cooling in the especially developed
Customers can produce an encapsulation film with higher quality meaning the film has lower shrinkage, doesnt need interlayer film or carrier paper. The system consumes lower energy as regular extrusion systems because no annealing is necessary.
Problem Solved
APSYS can include effects in the model and predict the I-V curve, EQE spectrum and internal temperature and current flow of the device. It can help a cell designer optimize their design and investigate the causes of device failures.
Noteworthy
APSYS has reliable interband tunnelling models with numerical convergence and physical accuracy that are superior to that of our competitors. APSYS is capable of 3D modeling and is the only TCAD solver that has hardware GPU acceleration to speed up large computations.
Innovation
Crosslight APSYS TCAD modelling tool
APSYS is a TCAD modelling tool designed for the semiconductor industry. It includes many advanced models and can provide accurate predictions of semiconductor device behaviour. This can be used to optimize device design and test new ideas while avoiding the expenses of experimental trial-and-error.
Challenge
In multi-junction III-V concentrator solar cells, it is important to match the current of all the sub-cells to reach maximum efficiency. This can depend on a number of factors including the layer thicknesses, material quality, doping profiles, incoming light spectrum, etc...
APSYS is known for its very efficient mesh allocation mechanisms and its sturdy numerical convergence under a variety of bias conditions.
When Introduced
APSYS was introduced around 1995. However, the numerical models needed to model III-V multi-junction concentrator cells were introduced in 2006.
Customer Benefits
Customers benefit from being able to optimize their device designs without having to pay for numerous wafer growths to iteratively improve the design using experiments. It can also help investigate the causes of device failures or explain various phenomenons that might not be apparent in simpler analytical models.
The remaining finalists will be presented in Issue 8 with a full preview of every nomination to ensure an informed voting process.
The Solar Industry Awards will be presented at the Maritim Hotel Reichshof Hamburg on the 6th September 2011.
Remember, it is your decision who wins an award so get your votes in now.
www.solar-pv-management.com Issue VII 2011
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