Canadian Solar to Bring N-Type TOPCon and HJT High Efficiency Solar Modules to Intersolar Europe 2022

Compared with formal (n-i-p) perovskite solar cells, trans (p-i-n) perovskite solar cells have been favored for their advantages such as simpler fabrication process, low-temperature film formation, no obvious hysteresis, and easy fabrication of tandem devices with traditional solar cells. more and more attention. However, the development of trans-perovskite solar cells is still limited by its low power conversion efficiency (PCE), and its stability and service life are still unable to meet the International Electrotechnical Commission's certification standards for commercial photovoltaic devices (IEC61215:2016 ). Therefore, developing a simple and efficient method to simultaneously improve the PCE and long-term stability of trans-perovskite cells is critical to accelerate their commercialization.

Defects and non-ideal charge transport at the interface between the perovskite active layer and the charge transport layer are one of the key factors restricting the efficiency and stability of trans perovskite solar cells. especially important. In previous studies, organic materials have been widely used as interfacial layers for perovskite solar cells due to their flexibility and versatility. However, organic materials tend to form interfacial barriers to hinder carrier transport due to their low electrical conductivity and carrier mobility. Inorganic interfacial layer materials have also attracted much attention due to their high carrier conductivity and stability, but due to their rigid structure, they cannot be tightly bound to the perovskite surface to form interactions to some extent. Therefore, developing an interface material that combines the characteristics of both organic and inorganic materials is a new idea to further improve the performance and stability of trans-perovskite solar cells.