Microwave radiation will improve the production of photovoltaic modules?

In the near future, microwave radiation could take the place of furnaces in the silicon annealing process. This innovative technology, pioneered at Macquarie University, has the potential to enhance the manufacturing of photovoltaic cells and streamline their recycling processes as well.

Led by Dr. Binesh Puthen Veettil from the School of Engineering, a dedicated team has demonstrated the superior efficiency of utilizing microwave radiation for silicon annealing compared to traditional methods. This refined technique boasts reduced energy consumption and quicker operation.

Their research centered on refining the production process of perovskite cells. Through the implementation of microwave annealing, these researchers achieved more efficient cells in comparison to conventional methodologies. Although the process of systematizing these outcomes is still ongoing, the potential benefits are already evident.

The remarkable advantage of microwave radiation lies in its precision, particularly in the context of recycling photovoltaic (PV) modules. An illustrative instance is the EVA laminate, responsible for safeguarding silicon wafers. When subjected to microwaves, this material softens, enabling easy separation from other components. Consequently, intact silicon wafers remain for subsequent processing.

Furthermore, this method of precisely targeted annealing holds promise for modules with intricate internal structures, such as the amalgamation of amorphous and crystalline silicon components.

Source: Applied Physics Letters