Abstract
As the field of perovskite optoelectronics developed, a plethora of strategies has arisen to control their electronic and morphological characteristics for the purpose of producing high efficiency devices. Unfortunately, despite this wealth of deposition approaches, the community experiences a great deal of irreproducibility between different laboratories, batches and preparation methods. Aiming to address this issue, we developed a simple deposition method based on gas quenching that yields smooth films for a wide range of perovskite compositions, in single, double, triple and quadruple cation varieties, and produces planar heterojunction devices with competitive efficiencies, so far up to 20%.
BOF (Hasselt University); Research Fund Flanders (FWO); FWO [V4.667.15N]; EPSRC [EP/M024881/1]; GOA project "Solarpaint" of the University of Antwerp; FWO project "Charge ordering" [G.0044.13N]; Hercules fund from the Flemish Government; European Research Council under the 7th Framework Program (FP7), ERC Starting Grant [278510 VORTEX]; Imec