Proceedings of International Conference Asia-Pacific Hybrid and Organic Photovoltaics (AP-HOPV17)
Publication date: 7th November 2016
Hybrid lead halide perovksite, MAPbX3(MA=CH3NH3+, X=Br- or I-) emerged with remarkable efficiency increasing and examination on its physical properties are of particular concern. One of the issues is hysteresis phenomenon in current-voltage characteristics. Current-voltage curves tend to show a strong dependence on the sweep rate and direction. Several mechanisms have been proposed including difference in trapping efficiency, ion migration, imbalance between electron and hole fluxes into an electron transfer layer and a hole transfer layer, and ferroelectricity or spontaneous polarization of the perovskites. We report our observations on the non-free charge behaviors in the thin films by measuring piezoelectric responses using piezoelectric force microscopy. In addition, we verify the details of the crystal structure in terms of configuration of the methylammonium ligands. We propose a device model to enhance charge transfer through increasing open circuit voltage in the perovskite solar cells when we have a preferred polarization in the materials.
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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.