Barium doping effect on the photovoltaic performance and stability of MA0.4FA0.6BaxPb1-xIyCl3-y perovskite solar cells
Journal
Applied Surface Science
Journal Volume
521
Pages
-
Date Issued
2020
Author(s)
Abstract
Perovskite solar cells (PSCs) have earned widespread attention owing to its fast-growing power conversion efficiency (PCE). However, there are some challenges for this type of solar cells. The toxicity issue, current density-voltage (J-V) hysteresis, and uncertain stability hinder commercialization. In this study, we developed the PSCs with MA0.4FA0.6BaxPb1-xIyCl3-y film as active layer. The MA0.4FA0.6BaxPb1-xIyCl3-y film with various barium doping concentrations were fabricated by solvent engineering method. We investigate the surface morphology, crystal orientation, and optical property of various perovskite films. Furthermore, the in situ grazing-incidence wide-angle X-ray scattering (in-situ GIWAXS) is used to analyze the heating crystallization process of perovskite film. We discover that Ba can improve crystallinity and structural stability. For the optimal 5.0 mol% Ba replacement, the PCE of perovskite device is increased to 17.4%, the J-V hysteresis can be completely eliminated and the device demonstrates long-term stability. © 2020
Subjects
Barium dopant; In-situ GIWAXS; J-V hysteresis; Perovskite solar cell; Power conversion efficiency
SDGs
Other Subjects
Barium; Barium compounds; Chlorine compounds; Crystal orientation; Crystallinity; Hysteresis; Lead compounds; Morphology; Optical properties; Perovskite; Photovoltaic effects; Semiconductor doping; Solar power generation; Stability; Surface morphology; X ray scattering; Crystallization process; Grazing incidence; Long term stability; Perovskite films; Photovoltaic performance; Power conversion efficiencies; Solvent engineering; Structural stabilities; Perovskite solar cells
Type
journal article