title: Low-temperature sputtered nickel oxide compact thin film as effective electron blocking layer for mesoscopic NiO/CH3NH3PbI3 perovskite heterojunction solar cells.
abstract: We introduce the use of low temperature sputtered NiOx thin film, which substitutes the PEDOT-PSS and solution-processed NiOx as an effective electron blocking layer for mesoscopic NiO/CH3NH3PbI3 perovskite solar cells. The influences of film thickness and oxygen doping on the photovoltaic performances are scrutinized. The cell efficiency has been improved from 9.51 to 10.7% for devices using NiOx fabricated under pure argon atmosphere. With adequate doping under 10% oxygen flow ratio, we achieved power conversion efficiency of 11.6%. The procedure is large area scalable and has the advantage for cost-effective perovskite-based photovoltaics.
authors: Department of Photonics, §Research Center for Energy Technology and Strategy (RCETS), and ∥Advanced Optoelectronic Technology Center (AOTC), National Cheng Kung University , Tainan, Taiwan 701.
authors: Kuo-Chin
authors: KC
authors: Wang
authors: Po-Shen
authors: PS
authors: Shen
authors: Ming-Hsien
authors: MH
authors: Li
authors: Shi
authors: S
authors: Chen
authors: Ming-Wei
authors: MW
authors: Lin
authors: Peter
authors: P
authors: Chen
authors: Tzung-Fang
authors: TF
authors: Guo