Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV19)
Publication date: 6th February 2020
Solution-processed perovskite solar cells (PSC) have gained significant interest in the thin-film photovoltaics (PV) community due to their outstanding optoelectronic properties as well as power conversion efficiencies (PCE) exceeding 23% for small-area spin-coated devices. However, in terms of the economic prospects of the perovskite technology, upscalable fabrication methods have to be developed that are able to transfer the high PCEs from small laboratory scales to an industrialized large-scale fabrication. Digital inkjet printing offers the perspective of high material and cost efficiency together with the flexibility to print patterns of arbitrary shape on a wide range of different substrates, opening up novel applications for perovskite-based PV. Nowadays, high performing PSCs in planar architecture – independent of the deposition technique – employ absorber thicknesses below 500 nm as a result of structural defects or grain boundaries usually observed for thicker absorber layers, limiting the diffusion length of the generated charge carriers.
Contrary to that, high-quality inkjet-printed triple-cation perovskite (Cs0.11FA0.74MA0.15PbI0.85Br0.15) absorber layers thicker than 1 micron are reported in this contribution. By carefully tuning the deposition and crystallization process of the absorber layer, a grain boundary-free columnar crystal structure is achieved, allowing for high-quality planar PSCs with excellent stabilized PCEs as high as 18.5%. It is worth highlighting that these PCEs are the highest values for inkjet-printed triple-cation perovskite absorbers reported in literature until now. Furthermore, it is shown that the severe hysteresis problem known from similar approaches is overcome by employing efficient charge transport layers such as electron beam evaporated nickel oxide (NiOx) films. Both achievements are important steps for the promising technology of inkjet printing and are expected to strengthen the research in the field of all-printable perovskite-based PV.
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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.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
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.
The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.