This report shares the key findings, observations and outcomes of the project as at September 2021.
Interdigitated Back Contact (IBC) solar cells achieve higher efficiency by eliminating shading losses from front grid metallisation and offers minimal ohmic losses with wide rear metal fingers. The limitations of IBC solar cells arise from poor cost-performance ratio and complex fabrication process, which necessitates multiple wet chemical processes and complex alignment patterning procedures.
The objective of this project at the Australian National University (ANU) is to simplify the cell fabrication process with shadow masks whilst developing a high-efficiency IBC cell utilising polysilicon and dopant free carrier selective contacts. Such development will establish a baseline fabrication process of such devices at the ANU, which can be built upon by future research. This will also improve the prospects of commercialisation for silicon IBC solar cells.