High performance rigid and flexible tandem perovskite photovoltaics under mimic high-altitude platform satellite environments

Abstract

Perovskite photovoltaics (PPV) have the potential to be used for aerospace applications due to, e.g., their high power-per-mass, high flexibility, and low-cost. Recent developments in narrow bandgap (NBG), wide bandgap (WBG), and tandem perovskite-based PPV devices have delivered excellent photovoltaic performance for outdoor applications. In this work, we have studied NBG, WBG, and tandem (on glass and flexible substrates) PPV devices under mimic high-altitude platform satellites (HAPS) operating environment, including light irradiation (AM0), temperature (+10 to −20 °C), and vacuum. Furthermore, the thermal cycling (TC) (+20 to −85 °C) stability is also conducted for NBG, WBG, and tandem PPV devices. Tandem devices on glass and flexible substrates delivered power conversion efficiency (maximum power) of 22.98% (31.39 mW/cm2) and 21.92% (29.91 mW/cm2), respectively, under AM0 irradiation and also showed promising TC stability in the HAPS environment. Interestingly, the tandem PPV (using the NBG and WBG perovskites) retains high performance under low temperatures compared to NBG and WBG devices. Therefore, it demonstrated the promising potential of Tandem PPV for HAPS application.