Check out our new article on leaner TOPCon solar cell fabrication !
© 2025, SOLMAT
Happy to share our new article 'Co-annealing of PECVD boron emitters and poly-Si passivating contacts for leaner TOPCon solar cell fabrication' is published in SOLMAT and also featured in PV Magazine.
Highlights from the article
- Building blocks towards lean TOPCon process flow.
- Demonstration of cells with single co-anneal for both contact polarities.
- Characterization and detailed loss analysis.
''This study investigates the feasibility of a single-step annealing process for tunnel oxide passivating contact (TOPCon) solar cell fabrication to replace the conventional two-step approach. We present a novel method using a single thermal treatment to simultaneously form the boron emitter at the front and poly-Si-based passivating contact at the rear of the device. Both are based on layers deposited by plasma-enhanced chemical vapor deposition (PECVD).''
Link to PV Magazine
The authors thankfully acknowledge support by the Swiss National Science Foundation (SNF) within the project “IMPACT” under grant No. 200021_185064 as well as the Swiss Federal Office for Energy (OFEN) within the projects “iPrecise” and “BESTOBOT” under grant Nos. SI/502115–01 and SI/502791-01. We also thank the Swiss State Secretariat for Research and Innovation (SERI) for funding the association to the European Union Project “APOLLO” (grant No. 101122277).