Sequential Ultrasonic Spray-Coating Planar Three Layers for 1 cm2 Active Area Inverted Perovskite Solar Cells
Journal
Energy Technology
Journal Volume
8
Journal Issue
7
Date Issued
2020
Author(s)
Abstract
The sequential deposition of a NiOx hole-transporting layer, one-step CH3NH3PbI3 perovskite absorber, and blended electron-transporting layer that comprises [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) and PNDI(2OD)T2 via automated ultrasonic spray-coating technique is demonstrated in air for planar inverted p–i–n solution-processed perovskite solar cells. Films fabricated via laboratory-sale spin-coating and industrially compatible spray-coating process, respectively, are compared with each other to optimize both the film-coating quality and corresponding device performance. This is validated by the photovoltaic performance of prototype devices with three spray-coated layers with the active area of 1 × 1 cm2. The champion cells achieve a power conversion efficiency of 10.09%, which is one of the highest efficiencies obtained from fully spray-processed large-area perovskite solar cells thus far. Furthermore, these results reinforce the feasibility of the spray-coating methodology for the fabrication of multilayers within perovskite solar cells stack and low-cost route toward upscaling the manufacturing alternatives to spin coating. ? 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Subjects
Butyric acid; Coatings; Efficiency; Lead compounds; Nickel compounds; Perovskite; Ultrasonic applications; Electron transporting layer; Hole transporting layers; Photovoltaic performance; Power conversion efficiencies; Sequential deposition; Solution-processed; Spray coating process; [6 ,6]-phenyl-C61-butyric acid methyl esters; Perovskite solar cells
SDGs
Type
journal article