Mapping the mysteries of pervoskite solar cell hysteresis

An illustration of the formation of interfacial charge causing hysteresis in perovskite solar cells

Source: © Royal Society of Chemistry

Caught on camera: interfacial stabilisation observed causing hysteresis means mobile ion migration is off the hook

Microscopists in Germany show charges stabilised at an anode perovskite interface are the chief culprits behind hysteresis – one of the most pertinent mysteries in cutting-edge solar cells research.