Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV18)
Publication date: 21st February 2018
In the past few years, emerging photovoltaic (PV) technologies have observed an exponential increase in power conversion efficiencies (PCE) with halide perovskite solar cells (PSCs) reaching the 23 % efficiency mark. Nevertheless, long-term operation stability is the main bottleneck for perovskites to compare with mature photovoltaic technologies like Si, CuInGaSe2 and CdTe solar cells. In this work, we present our most recent results related to the application of a series of molecules applied as organic modifiers specifically selected with two different anchoring groups and variable chain length. The organic molecules are applied within the perovskite layer, modifying the perovskite layer itself and also the oxide/perovskite interface. Champion solar cells applying the organic modifiers showed more than 19 % efficiency. Stability analyses demonstrated no degradation for 1000 h under full sun illumination in comparison with a 30% power loss observed for the reference devices without organic modifiers. The morphology, structure, composition and optoelectronic properties of PSCs as function of modifier concentration/chain length are systematically studied. The bonding of modifier molecules with the halide perovskite and oxides are illustrated by using Fourier-transform Infrared Spectroscopy (FTIR) and Nuclear Magnetic Resonance (NMR). A novel model is proposed to explain the mechanism of modifier molecules for enhanced stability.
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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.
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