A two-step route to planar perovskite cells exhibiting reduced hysteresis

• DOI: 10.1063/1.4917238
• Publication Date: 2015-04-07T17:00:19Z
• Authors: Alexander H. Ip; Li Na Quan; Michael M. Adachi; Jeffrey J. McDowell; Jixian Xu; Dong Ha Kim; Edward H. Sargent
• Keywords: Passivation; Hysteresis

A simple two-step method was used to produce efficient planar organolead halide perovskite solar cells. Films produced using solely iodine containing precursors resulted in poor morphology and failed devices, whereas addition of chlorine the process greatly improved dense, uniform films. This cells with a fullerene-based passivation layer. The hysteresis effect, which devices are otherwise prone, suppressed through use this interface modifier. combined techniques having stable efficiency exceeding 11%. straightforward fabrication procedure holds promise development various optoelectronic applications