Proceedings of nanoGe September Meeting 2015 (NFM15)
Publication date: 8th June 2015
Hybrid Halide Perovskite are probably the current hottest materials for photovoltaics due to several reasons. Certified photoconversion efficiencies as high as 20.1% has been reported. Efficiencies in all-solid devices has moved from 10-11% to this impressive 20.1% in less than three years. In addition, Perovskite Solar Cells (PSCs) can be prepared from solution methods at low temperature, and consequently they can be fabricated without large and expensive facilities. These facts are causing that a large number of researchers been attracted by the research in this field. Thus many researchers working on dye sensitized solar cells, organic or quantum dot solar cells are currently working on PSCs, contributing to a large number of papers and consequently of advancement. Nevertheless, many of the improvements obtained have been achieved by the refinement of the deposition techniques and there are several aspects of this new technology that are not completely understood. In order to clarify some controversy coming from the first days of the PSCs technology, concerning the role of the lead precursor, and also on the effect of different solar cell configuration (planar or using nanostructured scaffold (TiO2 or Al2O3), we have made a systematic analysis using different lead precursor and cell configurations.
We have prepared PSC with non-halide Pb precursors obtaining solar cells with significant efficiency, especially in the case of lead acetate precursor with efficiencies as high as in the case of using conventional PbCl2. Lead halide are not needed for the preparation of PSCs but the kind of precursor used has a big influence in the final PSC performance and also in the device stability. Moreover the use of nanostructured scaffold influences the crystal growth of perovskite layer as it has been analyzed by X-Ray diffraction and also the final performance as we discus in terms of different diffusion length extracted from photoluminescence transients. Photoinduced absorption was also used to study the photoinjection from perovskite into nanostructured scaffold.
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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.
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.