Prof. Henry Snaith from the University of Oxford shared that perovskite solar cells which are currently not commercialized yet will soon see the light of market. In his talk at ES01 (perovskite symposium session), he mentioned successful IEC standard testing on hybrid perovskite solar cells.
IEC standard testing includes testing the device at 85 deg C with 85% humidity, temperature cycling and full spectrum exposure. His results show more than 1000 hours of stability.
His talk was focused on the stability of perovskite solar cells. He picked up each layer of the solar cell and commented on its stability through the experimental results from his lab. He started with n-type layer. He mentioned that Titanium dioxide is not stable under UV light. Tin Oxide (SnO2) is more stable. He mentioned that doping the p-type layer increases the current; however, fill factor and voltage were decreased.
Hybrid perovskite stability is one of the biggest issues right now. He showed that a mixture of 2D and 3D perovskite is a stable form of perovskite. He mentioned that 2D perovskite can be observed at the grain boundaries and the bulk is 3D perovskite.
His innovative approaches towards solving the issues related to perovskite solar cells are remarkable.