| 초록 |
Power conversion efficiencies (PCE) of perovskite solar cells (PSCs) has rising from the initial 3.8% to the state-of-the-art 25.5% within the past few years. In this talk, we will discuss several challenges that need to be addressed in improving the photovoltaic performance via improved carrier management, i.e. (1) development of an electron transport layer of tin dioxide (SnO2 ) through the chemical bath deposition, (2) preparation of high crystalline film of (FAPbI3)1-x(MAPbBr3)x with controlled carrier mobility and light harvesting, and (3) interfacial passivation between the perovskite and the hole transporting layer for reducing the interfacial recombination. As a result, the best cell exhibited a certified PCE of 25.2%. Furthermore, in forward bias, our devices exhibit an external electroluminescence efficiency of up to 17.2%. |
