Researchers at the Okinawa Institute of Science and Technology Graduate University (OIST) have reportedly resolved a fundamental weakness in perovskite solar cells (PSCs). Their innovations appear to improve both the devices' stability and scalability and could be key to commercializing PSCs.
The study supports prior evidence that a commonly used material in PSCs, called titanium dioxide, degrades the devices and limits their lifetime. The researchers replaced this material with tin dioxide, a stronger conductor without these degrading properties. They optimized their method of applying tin dioxide to produce stable, efficient and scalable PSCs. "We need solar modules that can last for at least 5 to 10 years. For now, the lifetime of PSCs is much shorter," said Dr. Longbin Qiu, first author of the paper and a postdoctoral scholar in the OIST Energy Materials and Surface Sciences Unit, led by Prof. Yabing Qi.