The use of solar energy generation is steadily increasing, and photovoltaic modules are connected in series to generate higher voltage and power. However, solar panels are exposed to high-voltage stress (up to several hundreds of volts) between grounded module frames and the solar cells. Frequent high-voltage stress causes a power-drop in the modules, and this kind of degradation is called potential induced degradation (PID). Due to PID, a significant loss of power and performance has been reported in recent years. Many groups have suggested how to prevent or reduce PID, and have tried to determine the origin and mechanism of PID. Even so, the mechanism of PID is still unclear. This paper is focused on understanding the PID of crystalline-silicon solar cells and modules. A background for PID, as well as overviews of research on factors accelerating PID, mechanisms involving sodium ions, PID test methods, and possible solutions to the problem of PID, are covered in this paper.

• 배수현(고려대학교 신소재공학과) | Bae, Soohyun
• 오원욱( 고려대학교 신소재공학과) | 오원욱
• 김수민( 고려대학교 신소재공학과) | 김수민
• 김영도( 고려대학교 신소재공학과) | 김영도
• 박성은( 고려대학교 신소재공학과) | 박성은
• 강윤묵( 고려대학교 그린스쿨대학원) | 강윤묵
• 이해석( 고려대학교 신소재공학과) | 이해석
• 김동환( 고려대학교 신소재공학과) | 김동환