Chinese researchers report p-i-n perovskite solar cells with efficiency of over 24%

It was recently reported that Chinese researchers from the ECNU and the Ningbo Institute of Materials Technology and Engineering under the Chinese Academy of Sciences were successful in developing a type of perovskite solar cell (PSC) with high power conversion efficiency.

PSCs can be generally classified into two categories, n-i-p devices and inverted p-i-n devices. The p-i-n PSCs can be produced at low temperature with good stability, and are compatible with crystal silicon cell to achieve the development of laminated cell, said Fang Junfeng, professor at the East China Normal University (ECNU). At present, the efficiency of n-i-p perovskite cells has reached 25%, while the maximum efficiency of inverted p-i-n devices remains at 22%-23%.

The new inverted p-i-n PSCs reportedly achieve a power conversion efficiency higher than 24%. During illuminated operation for 1,000 hours at 55 degree Celsius and after dark aging at 85 degree Celsius for 2,200 hours, the p-i-n devices maintain more than 90% of this efficiency, according to a recent research article published in the journal Science.