A number of cheap and solution-processable materials have been studied as photovoltaic active layer to develop inexpensive and highperformance photovoltaic systems. Organic materials with advantages for solution process at low temperature had attracte...
A number of cheap and solution-processable materials have been studied as photovoltaic active layer to develop inexpensive and highperformance photovoltaic systems. Organic materials with advantages for solution process at low temperature had attracted the great interest but the devices using them have a limit due to their low-performance. Recently, inorganic-organic hybrid materials such as CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> and CH(NH<sub>2</sub>)<sub>2</sub>PbI<sub>3</sub> have brought the surprising high performance in spite of using low-cost fabrication process. The materials have a AMX3 perovskite crystal structure so that photovoltaic devices using them are called by ‘perovskite solar cells’. The solution processed perovskite solar cells are showing high efficiency exceeding 20%. In this talk, the results for development of perovskite solar cells in KRICT will be introduced.