Phosphors for improving performance of perovskite solar cells

In recent years, solar cells based on organic—inorganic hybrid perovskite structured materials having efficiencies comparable with that of c - Si solar cells have been demonstrated. In the initial experiments efficiencies were as low as 3.8 %. Since then, rapid progress has been made and the state of art perovskite based solar cells (PSC) have efficiencies as high as 17 %. However, PSC is still an emerging technology and several issues are still to be addressed before it can be commercialized. CH3NH3PbX3, compounds absorb light in near UV as well as visible region. UV light is not converted into electrical energy. On the contrary, it degrades the cell performance over a period. A downshifting phosphor which will absorb light in 350-450 nm and emit in the green region can improve the performance of the cell. Results on synthesis and characterization of ZnB2O4:Mn2+ and Ba9Sc2Si6O24:Eu2+ phosphors presented here show that these can be adequate for this purpose.In recent years, solar cells based on organic—inorganic hybrid perovskite structured materials having efficiencies comparable with that of c - Si solar cells have been demonstrated. In the initial experiments efficiencies were as low as 3.8 %. Since then, rapid progress has been made and the state of art perovskite based solar cells (PSC) have efficiencies as high as 17 %. However, PSC is still an emerging technology and several issues are still to be addressed before it can be commercialized. CH3NH3PbX3, compounds absorb light in near UV as well as visible region. UV light is not converted into electrical energy. On the contrary, it degrades the cell performance over a period. A downshifting phosphor which will absorb light in 350-450 nm and emit in the green region can improve the performance of the cell. Results on synthesis and characterization of ZnB2O4:Mn2+ and Ba9Sc2Si6O24:Eu2+ phosphors presented here show that these can be adequate for this purpose.