Atomic Layer Deposition Enabled Perovskite/PEDOT Solar Cells in a Regular n–i–p Architectural Design

Perovskite solar cells employing poly(3,4‐ethylenedioxythiophene) (PEDOT) as hole transport layer on top of methylammonium lead halide are reported, yielding a power conversion efficiency of 11% and a 6% stabilized power output. An atomic layer deposition assisted interface architectural approach is adopted to fabricate the n–i–p perovskite/PEDOT devices. The results present a promising next step toward efficient low‐cost perovskite‐based photovoltaic technology.