This report presents the findings from investigating the use of novel multifunctional dielectric layers to simplify processing of high-efficiency silicon solar cells.
Report extract
This Project aims to investigate the application of novel multifunctional dielectric layers based on phosphorus oxide (POx) to reduce surface recombination and simplify processing of high-efficiency silicon solar cells.
Key findings of the project so far include:
- Excellent performance of POx-based dielectric stacks on textured and n+ diffused silicon surfaces has been shown, as well as compatibility with standard SiNx capping and high-temperature firing processes
- Investigations of the chemical structure and composition of POx-based stacks have revealed substantial structural changes occurring at elevated temperatures, which help to explain the origins of their unique electrical properties
- The ability to form local electrical contacts via laser processing of silicon surfaces coated with POx-based dielectric stacks has been experimentally demonstrated, opening the way for applications in devices
