Methods of Hysteresis Reduction in Perovskite Solar Cells

Abstract

Maniell workmanElectrochemical SocietyPerovskite Solar cells have shown much promise in a relatively short time. Power conversion efficiencies have increased from 3.8% to 24.2 % in a span of ten years. Perovskite solar cells have attracted much attention in research because of the relatively low cost in manufacturing and production. Current silicon photovoltaic devices are more expensive than conventional fossil fuel. Perovskites are typically analyzed by assessing their current voltage relationship. Under test conditions emulating standard environmental conditions the voltage is incrementally increased in one scan in decreased in another. hysteresis, the variance between the scans, is a common issue amongst perovskites. large hysteresis creates instability in operation. There are currently a number of efforts in order to reduce hysteresis in Perovskite solar cells. The capacitive element innate to perovskites makes addressing this issue complicated. Hysteresis has many sources such as the interfacial boundary, morphology, perovskite chemistry, and defects. In this presentation some of the current methods of hysteresis reduction for perovskite solar cells are examines for their effectiveness. The electrical and quantum mechanical characteristics play a critical role in hysteresis and device performance.