| 초록 |
Perovskite solar cells (PSCs) have attracted much attention owing to their high power conversion efficiencies (PCEs) and relatively low fabrication costs compared with conventional silicon-based solar cells. In a planar n–i–p-type PSC, a perovskite layer is sandwiched between a fluorine-doped tin oxide (FTO) glass substrate with an electron transport layer (ETL) and a hole transport layer (HTL) with metal electrode, respectively. The ETL plays an important role in electron extraction and hole blocking. A compact TiO2 layer is widely used. The TiO2 compact layer can be easily prepared from its precursor solution via a sol–gel process. The PCE value of planar-PSCs is around 14%. In this talk, I will present recent progress in understanding and progresses of electron extraction mechanism and ETL materials for achieving highly stable and efficient perovskite solar cells. [참고자료. Adv. Energy. Mater. 2017, accepted. Nano Energy 2016, 28, 269. ACS Nano 2016, 10, 6029.] |
