Quality Improvement and in-situ process monitoring in laser scribing of thin film solar cell devices

Laser scribing technology has been actively developed for thin film solar cell fabrication taking number of advantages over mechanical scribing.

Current laser scribing is composed of three sequential steps. Scribing is carried out by a deposition of the bottom portions in a electrode.

Optimal laser scribing conditions for thin film solar cell are based on flexible polyimide subtrate. Precise tuning of laser power and energy were critical. Significant adjustment of adhesion and cohesion were made utilizing a microstructural tuning of Mo film, directily affecting scirbing quality.A reduction in laser pulse energy applied with relatively lower speeds. Implementation incorporates in the design a increased laser beam spot, providing sufficient laser accuracy with enhanced accuracy, target size and position.

The P2 process is implemented with a reduced laser power budget along side a lower mild gas injection. There is a higher quality of processing which will be removing specific layers but avoid damage to next layer of sensitive samples.

We seek to develop and commercialize, by an exclusive or non-exclusive license agreement and/or sponsored research, with a company active in the area.

Available for License

Mechanical Engineering

Laser scribing, thin film solar cell, in-situ process monitoring

 

https://stonybrook.technologypublisher.com/files/sites/clean-energy-11.jpg , https://stonybrook.technologypublisher.com/files/sites/material-and-composition1.jpg

Patent Information:
Technology/Start-up ID: