| 초록 |
The lead-based perovskite (CH3NH3PbI3) material has a high molar coefficient, high crystallinity at low temperature, and long range of balanced electron-hole transport length. In addition, PCE of perovskite solar cells (PSCs) has increased rapidly for recent few years, and it recorded efficiency of 22% in 2016. However, as is well known, Pb compounds have problems with the toxicity and stability. Recently Sn(II), Sn(IV), and Bi(III) based perovskite materials much attention as an alternative light-harvesting active layer material instead of lead based perovskite in photovoltaic cells. In this work, we demonstrate bismuth and tin materials as a lead-free hybrid halide perovskite film for the light harvesting semiconductor in photovoltaic applications. |
