Compact TiO2 layer by UV-assisted TiBr4 chemical bath deposition for perovskite solar cells. (July 2023)

• Record Type: Journal Article
• Authors: Pylnev, Mikhail; Rezende Santos, Felix; Zhang, Di; Alawadhi, Hussain; Tabet, Nouar
• Is Part Of: Applied geography. Volume 161(2023)
• Publication Date: 2023-07
• Subjects: Electron-transporting materials -- Perovskite solar cells -- Compact TiO2 layer -- Chemical bath deposition -- TiBr4; Geography -- Periodicals; Human geography -- Periodicals; Human ecology -- Periodicals; 910
• DOI: 10.1016/j.mssp.2023.107467
• Languages: English
• ISSNs: 0143-6228

Abstract

Abstract: A new method to prepare a compact TiO2 layer for perovskite solar cells is introduced. The method features a UV-assisted chemical bath in an aqueous TiBr4 solution. The process does not require sophisticated systems to implement making scaling-up easy and the precursor ensures a uniform TiO2 layer with densely-packed planar grains. UV light provides an alternative to the temperature-assisted CBD process and eliminates the necessity to stir the solution during a deposition that opens new horizons for further scaling up PSCs. The new compact layer was compared to the spin-coated TiO2 layer and it was found that the novel method allows obtaining a more uniform layer with conformal coverage of the substrate. The new TiO2 layer was tested for perovskite solar cells and showed an improvement in open-circuit voltage (VOC ) which can be explained by improved morphology and surface coverage of the TiO2 layer. Graphical abstract: Image 1