Cong S, Yang H, Lou Y, Han L, Yi Q, Wang H, Sun Y, Zou G.
ACS Appl Mater Interfaces. 2016 Dec 29. doi: 10.1021/acsami.6b12268. [Epub ahead of print]The underlayer plays an important role for organic-inorganic hybrid perovskite formation and charge transport in perovskite solar cells (PSCs). Here, we employ a classical organic small molecule, 5,6,11,12-tetraphenyltetracene (rubrene), as the underlayer of perovskite films to achieve 15.83% of power conversion efficiency with remarkable stability exposed to the atmosphere. Experiments demonstrate rubrene hydrophobic underlayer not only drives the crystalline grain growth of high quality perovskite, but also contributes to the stability of PSCs. Read More