High-speed laser edge deletion LED for CdTe thin-film solar module production
The EDS-HP from 4JET has been developed as a 24/7 inline production tool especially for the mass production of CdTe thin-film solar modules. It combines high accuracy with flexibility to realize any edge deletion layout. The EDS-HP requires a minimum of maintenance, is characterized by a robust and reliable granite-based system design and ensures a high uptime. In terms of throughput and availability, it achieves the highest performance in its class.
Granite for long-term Stability and Accuracy
The EDS-HP system is based on a granite portal with linear axes. The substrate is gripped on one or both sides and moved back and forth in the system at high speed. A stationary granite bridge carries the axis of the structuring head and is mounted underneath the substrate, enabling high throughput glass side structuring (GS). To achieve laser edge deletion along all glass edges, the glass is moved while the laser edge deletion head is at rest and vice versa. Even the removal of stripes in the middle of the glass is possible. The glass substrate is supported against bending during its movement to ensure stability and especially a stable focal plane for the laser. Accuracy, robustness and process stability are achieved by the granite base and its excellent vibration damping and low coefficient of thermal expansion (CTE). This guarantees a sustainable production of high-precision and high-quality CdTe thin-film solar modules.
|Thin-films||layer stack for CdTe and CIGS type of thin film solar modules|
|Laser power||depending on the required cycle time and under consideration of economic aspects|
|Patterning resolution||standard 950 µm, others upon request|
|Processing||ablative layer removal from the glass side|
|Working area (x, y)||up to 1200mm x 1600mm; other upon request|
|Substrate dimensions||customer specific within machine working area specification|
|glass thickness||1.8 mm up to 6 mm|
|+/- 150µm relative to the glass edge|
|Particle extraction||high volume flow, high pressure with two filter stages|
|Footprint||depending on working area|
|Weight||depending on machine size|
|Loading and unloading||designed for a fully automated in-line production|
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