“…23,25,26,36 The low temperatures are compatible with some industrial polymer substrates, which for AP-SALD enable the process to be compatible with atmospheric pressure, roll-to-roll (R2R) deposition of ZnO onto continuous substrates (e.g., polymers, foil, or paper). 23,34,37,38 AP-SALD ZnO was first reported by Levy et al 16 Their reactor was further developed by Cambridge University and used to produce Cu 2 O, 35 TiO 2 , 24 and doped and intrinsic ZnO. 18,23,25,26,28,36,39 Various names have been given to describe this system, but in this research update, we standardize its name to the Cambridge University Close Proximity (CUCP) reactor (design details are given in Ref.…”