Continuous-wave infrared laser technology enables damage-free backsheet removal in end-of-life solar modules

Researchers from the University of Virginia have developed a laser-based method to remove backsheets from end-of-life solar modules without damaging the glass or silicon wafers. The process involves controlled heating of the silicon-EVA interface through the front glass, enabling clean mechanical delamination with preserved device performance. This method offers a lower-energy, lower-cost alternative to conventional thermal or chemical recycling methods. The IR-CW laser technology allows for precise thermal activation of the silicon-EVA interface while minimizing stress on surrounding materials. The research team confirmed that the silicon and metallization layers remain intact, with no significant degradation in device performance after laser treatment. This sustainable photovoltaic recycling method supports circular economy strategies for end-of-life solar modules and has low energy consumption and efficient operation, with equipment amortization and electricity costs totaling $0.22 per module.

https://www.pv-magazine.com/2026/05/13/continuous-wave-infrared-laser-technology-enables-damage-free-backsheet-removal-in-end-of-life-solar-modules/