Uncovering Hidden Losses in Solar Cells: New Analysis Method Reveals the Nature of Defects

Uncovering hidden losses in solar cells: New analysis method reveals the nature of defects

A joint research team has successfully identified, for the first time, the specific types of defects responsible for efficiency loss in silicon heterojunction (SHJ) solar cells.

Solar cell defect analysis advances with new transient response technique

Tokyo, Japan (SPX) Nov 26, 2025 Researchers from the Korea Institute of Energy Research and Chungbuk National University have pinpointed two distinct types of defects responsible for power loss in silicon heterojunction solar cells. The team, led by Dr. Hee-Eun Song of KIER and Professor Ka-Hyun Kim of CBNU, identified slow and fast component defects using a refined method of Deep Level Transient Spectroscopy that captures the

Uncovering Hidden Losses in Solar Cells: A New Analysis Method Reveals the Nature of Defects

A joint research team led by Dr. Hee-Eun Song of the Photovoltaics Research Department at the Korea Institute of Energy Research (President Yi Chang-Keun, hereafter "KIER") and Prof. Ka-Hyun Kim of the Department of Physics at Chungbuk National University (President Koh Chang-Seup, hereafter "CBNU") has successfully identified, for the first time, the specific types of defects responsible for efficiency loss in silicon heterojunction (SHJ) solar…