Allegro™ Laser Scriber

Production system for the laser scribing of thin-film solar cells

Use LPKF Allegro laser systems for all processes (P1 through P3) of laser scribing on thin film solar cells.

LPKF Allegro systems integrate easily into existing operational processes, and can be adapted to module size and the existing thin-film solar cell technology.

The LPKF Allegro thin-film scribing equipment is very accurate, and testing shows excellent stability over a long period of time. The LPKFSolar™ is fast, dynamic, and robust - requiring minimal service to maintain a high reliability.

The LPKF Allegro laser system also features:

• system flexibility, addressing custom requirements
• significant process security and maximum protection against debris
• through-glass structuring (when the coating is on the opposite side)
• a variety of laser wavelengths available for different thin-film technologies
• compensation for variations in glass thickness and waviness
• extremely high throughput
• continuous setting of cell width (distance of structuring paths) of 5 to 15 mm
• automatic alignment of structuring against existing structures
• inline concept with auto-feed of glass and lead-away

Technical Data

Laser wavelength	1064 nm, 532 nm and 355 nm
Line width	35-70 µm
Substrate dimensions	Customer dependent (e.g. 2200 x 2600 mm)
Substrate thickness	2-6 mm
Substrate material	Float glass
Particle Extraction	Dimensioning customer dependent
Thin film technologies	CdTe, aSi, aSi/µSi, CIS