DOI: https://doi.org/10.29363/nanoge.inform.2019.045
Publication date: 8th January 2019
Vacuum-deposition is one of the most technologically relevant techniques for perovskite solar cells fabrication. The intrinsically additive nature of vapor-based methods allows the design of multiple device architectures, circumventing solvent compatibility considerations. This can be a tool to maximize the photovoltaic conversion efficiency, but it is also a key factor to enable the fabrication of tailored systems for the characterization of the solar cell working mechanisms.
This work presents the progress on vapor phase deposited perovskites for single and multijunction devices. Multiple source co-deposition is employed for the fabrication of multi-cations/anions perovskite compounds, including low bandgap Pb-Sn and wider bandgap versions. We carry out a detailed study of the device interfaces, with the focus on the influence of thin organic charge extraction layers, strong dopants, ionic compounds, and conjugated polymers. With this approach, we can identify the main factors limiting the device performance, which is crucial to develop the full potential of the technology.
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