Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV16)
Publication date: 28th March 2016
Hybrid perovskites are one of the most promising materials for low-cost photovoltaic technology. However, the understanding of their physical properties has lagged behind the impressive improvement of power-conversion efficiency (>20%). In my presentation I will report about the optical properties of FAPbI3 perovskite films based on different precursor systems (the formamidinium iodide (FAI)/HPbI3, FAI/PbI2, and FAI/PbI2 with HI additive) are comparatively investigated as a function of temperature. Exciton binding energies of 8.1 meV for the high temperature phase and 18 meV for the low temperature phase are extracted. At room temperature, we found the lifetimes to vary from tens to hundreds nanoseconds. FAPbI3 film made from the new precursor, exhibits the longest lifetime of 439 ns, suggesting a lower number of defects and lower non-radiative recombination losses compared with FAPbI3 obtained with the other two precursors set. Importantly, photoluminescence spectra at room temperature show single peak, while, at liquid helium temperature, the emission features two peaks, the one at higher energy displaying a fast decay (
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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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