Gold Nanomirrors Boost Solar Cell Efficiency, Paving Way for Cheaper, Lighter Panels
researchers have developed a novel method using gold nanomirrors to significantly increase the efficiency of ultrafine solar cells while concurrently lowering production costs adn enabling flexible designs.The breakthrough, achieved through a simplified nanofabrication process called nano-impression lithography, promises to accelerate the adoption of lightweight, versatile solar technology in applications ranging from vehicles and buildings to portable electronics.
Conventional solar panel production often relies on expensive and complex manufacturing techniques. This new approach addresses both performance and economic hurdles, offering a potential solution for wider access to solar energy. The technology tackles two key challenges at once: preventing interface defects that hinder efficiency and maximizing light absorption within the cell.
Testing on Acigs type ((AG, Cu) (in, GA) SE) ultrafine photovoltaic cells demonstrated a 1.5 percentage point increase in yield thanks to the gold mirror layer. Crucially, thes cells are manufactured at a lower temperature – 450 degrees Celsius - compared to the 530+ degrees Celsius required for traditional CIGS cells.This lower temperature mitigates diffusion issues commonly associated with gold-based contacts and allows for compatibility with flexible substrates, opening doors for innovative applications.
The innovation effectively traps and reflects photons within the cell, enhancing light management and boosting overall performance. This results in cheaper, lighter solar panels with improved efficiency, positioning the technology for large-scale production and integration into a diverse array of products.
