How to recycle back Eva layer on solar cells in c-Si PV module?

By utilizing a 1064 nm near-infrared optical-fiber pulsed laser, a laser irradiation followed by mechanical peeling method was demonstrated to recycle the back EVA layer on the solar cells in c-Si PV module.

Can pyrolysis remove Eva from shredded PV panels?

Next, we examined a pyrolysis treatment of the shredded module with the backing removed by either chemical treatment or cryogenic treatment. Pyrolysis treatment of the PV panel allows for the complete removal of the EVA and therefore liberation of the cell and glass from the EVA.

Can shredded EOL PV panels be recycled?

Volume 72, pages 2615–2623, (2020) One of the technical challenges with the recovery of valuable materials from end-of-life (EOL) photovoltaic (PV) modules for recycling is the liberation and separation of the materials. We present a potential method to liberate and separate shredded EOL PV panels for the recovery of Si wafer particles.

Can Eva & solar cells be reused?

The recycled EVA and solar cell both have great potential for reuse. Furthermore, for PV module with defective back-sheet, the method also offers an available way to remove the EVA adhesive for replacing the back-sheet.

How were PV panels shredded?

The shredder’s opening allowed for roughly 30 cm × 30 cm panel sections, which were cut with an electric hand saw. The PV panel pieces were shredded with and without the backing material.

Can ethylene-vinyl acetate (EVA) copolymer be recycled?

Debonding of ethylene–vinyl acetate (EVA) copolymer is critical for recycling the end-of-life (EoL) crystalline silicon (c-Si) photovoltaic (PV) modules. The currently utilized methods are mainly based on EVA chemical dissolution or pyrolysis, which cannot recycle EVA and usually causes environmental problems.