| 초록 |
Methylammonium lead iodide perovskites (MAPbI3) have interesting optical and electrical properties that have been intensively studied for several applictions. The photogenerated electrons and holes have a small effective mass, giving rise to high carrier mobility of approximately 10 – 20 cm2 V-1s-1, while the recombination lifetime of hundreds of nanoseconds results in long diffusion lengths of charge carriers as high as 2-3 micrometers. These appealing properties motivated researchers to explore material’s intrinsic properties. Here we present a large area, mass-producible, and sub 2-3 micrometer-thin perovskite films of pure crystal orientation. We will discuss the methods to control the orientation of the perovskite crystals and their macroscopic morphology, as well as explore the transport and photophyiscal properties of these films and demonstrate their promising applications in lasing and field-effect transistors. |
