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Updated: Apr 26, 2026
Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells
Published on: March 19, 2017
Low-temperature sputtered nickel oxide compact thin film as effective electron blocking layer for mesoscopic
Kuo-Chin Wang1, Po-Shen Shen, Ming-Hsien Li
1Department of Photonics, §Research Center for Energy Technology and Strategy (RCETS), and ∥Advanced Optoelectronic Technology Center (AOTC), National Cheng Kung University , Tainan, Taiwan 701.
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.
