Interestinghttps://www.pv-tech.org/fraunhofer-ise-sets-new-record-efficiency-for-both-sides-contacted-solar-cell-of-26/
The cell, dubbed TOPCon Rear Emitter Solar Cell (TOPCoRE), allows for higher voltages and fill factors than cells with a collecting emitter on the front, while also allowing for wafers to be used more effectively for charge carrier transport. The front side of the cell is also passivated more effectively.
https://aurorasolartech.com/2021/01/22/aurora-solar-technologies-provides-corporate-update/
The Company's technological efforts as described above also benefit us in preparation for DM product usage for the next generation of solar cells, particularly "HJT" and "TOPCon" cells. These are the leading contenders for the next generation of solar cell designs for volume manufacturing and deployment. HJT stands for "Heterojunction Technology" and TOPCon stands for "Tunnel Oxide Passivated Contacts". Each of these technologies promise a relative efficiency improvement of four percent or more over the established PERC technology. Pilot or full-scale production of HJT and TOPCon solar cells is already underway at leading solar cell manufacturers.