Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV18)
Publication date: 21st February 2018
In spite of the exciting future prospects shown by organic lead halide perovskite solar cells (PSCs), challenges such as premature material degradation and Pb toxicity must be addressed for this technology to become commercially available. In this direction, Sn-based perovskites have emerged as the main alternative to tackle Pb content in PSCs, showing promising charge carrier mobility and nearly ideal bandgaps. Nevertheless, their lack of stability in ambient conditions (e.g. easy oxidation of Sn2+ to Sn4+) causes unwanted p-type doping in the material, leading to excessive non-radiative recombination and device shorting. Recently, layered tin-based perovskites have been introduced as a way to slow material degradation and achieve high device efficiency and reproducibility.1–3
This presentation will focus on our latest research on layered hybrid tin halide perovskite. Specifically, the optolectronic properties of 2D (PEA)2SnI4 vs 3D CH3NH3SnI3 will be discussed, as well as the incorporation of the low-dimensional material in light-emitting diodes.4 Furthermore, the interfacial charge transfer and recombination reactions in layered perovskites will be described via Transient Absorption Spectroscopy and Time-Resolved Photoluminescence studies, highlighting the role of multiphase systems. Last but not least, the use of layered tin perovskites in solar cells and the role of the organic spacer will be elucidated.
1 ACS Energy Lett., 2017, 2, 982–990.
2 J. Am. Chem. Soc., 2017, 139, 6693–6699.
3 Adv. Energy Mater., 2017, 1702019.
4 ACS Energy Lett., 2017, 2, 1662–1668.
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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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