Researchers at the National University of Singapore (NUS) and Solar Energy Research Institute of Singapore (SERIS) have announced achieving 24.35% efficiency for self-designed inverted perovskite solar cells on an active area of 1 cm2 , saying it is an improvement over the previous record high of 23.7% on the same area.
To get to this 24.35% efficiency level, the team says it incorporated a novel interface material into perovskite cells that contributed a ‘range of advantageous attributes’. These include excellent optical, electrical and chemical properties that enhanced both their efficiency and longevity.
Their research work has been included in the Solar Cell Efficiency Tables Version 62. According to this, the team fabricated the 1 cm2 perovskite solar cell to achieve a fill factor of 82.1%, short-circuit voltage of 25.60 mA/ cm2 and open-circuit voltage of 1.159 V.
Further research, says the team, will focus on improving the stability of perovskite solar cells. It is now developing a customized accelerating aging methodology to bring this technology from lab to fab. Project Lead and Assistant Professor Hou Yi said the next goal is to deliver perovskite solar cells with 25 years of operational stability.
Team member Wang Xi said, “Our findings set the stage for the accelerated commercialization and integration of solar cells into various energy systems.”
