Proceedings of nanoGe International Conference on Perovskite Solar Cells, Photonics and Optoelectronics (NIPHO19)
DOI: https://doi.org/10.29363/nanoge.nipho.2019.025
Publication date: 21st November 2018
In this contribution, we address some general considerations to succeed in inkjet printing perovskite solar cells: starting from substrate properties to ink development and technical requirements when utilizing inkjet printing as a technique.
We will point out the importance of substrate modification routines to ensure a good wettability and highly reproducible printing results. Determining the substrate surface energy by means of contact angle measurements enables us to define criteria for the ink development. Intrinsic solvent properties such as surface tension, viscosity, boiling point and solubility but also toxicity define a set of parameters to be considered when developing a printable ink formulation. By controlling the ink formulation, as well as the post-processing parameters, we are able to control the film roughness and thickness, thus changing the crystallization dynamics [1], [2]. Preliminary work on multi-cation perovskite solar cells in combination with a vacuum annealing post-processing step leads to power conversion efficiencies of 15% for an n-i-p solar cell on a sub-cm² cell area size [3]. We now focus on in-situ characterization of perovskite film formation kinetics as a function of precursors composition and process conditions to unveil the role of solution chemistry and intermediate states in determining sample morphology and quality.
The presented insights of this study paves the way for large area, low-cost and high-throughput inkjet-printed perovskites for efficient thin film solar cells.
We gratefully acknowledge financial support of the Initiating and Networking funding of the Helmholtz Association (HYIG of U.W.P. and E.U.) We acknowledge financial support by the German Federal Ministry of Education and Research through Grant 03SF0483 (PeroSol).
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International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
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The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.
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