Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV18)
Publication date: 21st February 2018
Tandem solar cells enable achieving high power-conversion efficiency by simultaneously reducing thermalization and transmission losses through the selective absorption of solar radiation in wide- and narrow-bandgap semiconductors. To facilitate this high performance, the bandgap of sub-cells must be matched, especially in the case of monolithic series-connected configurations. Aiming at tandem devices incorporating one or more perovskite layers, we have investigated bandgap tuning for mixed formamidinium (FA) and methylammonium (MA) lead halide perovskites using the halide tuning strategy. By employing a two-step casting process, the bandgap was tuned between 1.57 eV and 1.74 eV, leading to device efficiencies exceeding 17%, for the narrow-bandgap compositions, and 15%, for the wide-bandgap perovskites, when developed in the p-i-n device structure. We study these perovskites through X-Ray Photoelectron Spectroscopy and correlate their composition with the optical bandgap, crystal structure, morphology, photovoltaic performance and stability as a stepping stone to optimized mixed-cation perovskites demonstrating high performance and stability characteristics.
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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.