Proceedings of 6th International Conference on Hybrid and Organic Photovoltaics (HOPV14)
Publication date: 1st March 2014
Harnessing sunlight to generate photovoltaic electricity based on thin film solar cell technologies is crucial towards delivering green, sustainable energy at reduced materials and fabrication cost. Thin film hybrid solar cells using solution-processable materials such as semiconductor nanocrystals, organic polymers, or dye-sensitized solar cells have achieved so far 7-12% power conversion efficiencies (PCEs).
Organic-inorganic hybrid perovskites, previously investigated for field-effect transistors and light emitting applications, have emerged in recent years at the forefront of solution-processable and abundant thin-film photovoltaic technologies yielding PCEs over 15%.
One key aspect for the highest device performances reported to date is film uniformity and coverage of the perovskite film.
In this work, we utilized in situ grazing incidence wide-angle X-ray scattering (GISAXS) and scanning electron microscopy to study the thermally-induced morphological and crystalline development of methylammonium lead mixed halide (CH3NH3PbI3-xClx) perovskite films.
We investigated the photovoltaic device performance with mesosuperstructured and planar heterojunction architectures under different annealing conditions. We observed that a short rapid thermal annealing at 130 °C leads to the growth of large micron-sized textured perovskite domains and improved short circuit currents and power conversion efficiencies up to 13.5% for planar heterojunction perovskite solar cells.
This work highlights the criticality of controlling the thin film crystallization mechanism of hybrid perovskite materials and offers a simple pathway for further enhancements in perovskite solar cells.
(left) GIWAXS and SEM images of perovskite films annealed at 100C for 45min and 130C for 5min. The spotty GIWAXS pattern indicates highly orientated perovskite crystals. (left) Corresponding planar device performances.
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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.