In addition to batteries and fuel cells, another important technology helping society to reach 80% or more greenhouse gas emission reduction is photovoltaics or solar cells. At NIMS, a team lead by Kenjiro Miyano is researching the application of perovskites in solar cells to increase efficiency rates.
"Perovskite" is the name given to a structure whose elements can vary. Researchers are still discovering different combinations of elements that can function as perovskite structure and that have a high efficiency for solar power conversion. At NIMS one of the configurations under study is CH3NH3PbI3. You can learn more technical details about perovskites in this TEDX talk.
Perovskite CH3NH3PbI3
(Image from https://www.nature.com/articles/ncomms8497)