Proceedings of International Conference on Hybrid and Organic Photovoltaics 2015 (HOPV15)
Publication date: 5th February 2015
H2 production via solar water splitting has been considered as a promising strategy to store solar energy and provide clean fuel for the future. However, the complexity and the expense of current systems hamper the large scale implementation. The emergence of perovskite solar cells provides new opportunities, mainly due to their high efficiency combined with facile solution processing, large open circuit voltage and the possibility of making them semi-transparent. Taking advantage of the large open circuit volltage of these cells, we have achieved 12.3% solar to hydrogen (STH) conversion efficiency by combining a pair of perovskite photovoltaics and Earth-abundant catalyst electrodes, which is not possible with two silicon (Si) solar cells, Fig.1. [1] Furthermore, I will talk about our most recent efforts in making a panchromatic tandem water splitting device by combining perovskite solar cell and CuIn1-xGaxSe2 (CIGS) photocathode in photovoltaic biased photoelectrochemical (PV-biased PEC) approach. Using a similar protection strategy as we previously demonstrated for Cu2O, [2] we have enabled CIGS as a stable and highly efficient photocathode, with a photocurrent density of 34 mA cm-2 and an onset potenial of 0.6 V versus reversible hydrogen electrode (RHE). A tandem of this CIGS photocathode with a high open circuit voltage and semi-transparent perovskite solar cell, achieves around 5% STH efficiency without optimizing the system.
Fig. 1. (A) A general band diagram of perovskite tandem cell for water splitting. (B) J-V curves of the perovskite tandem cell under simulated AM 1.5G 100 mW cm-2 illumination and dark condition, and the J-V curve of the NiFe/Ni foam electrodes under two electrode configuration.
[1] J. Luo, J. -H. Im, M. T. Mayer, M. Schreier, M. K. Nazeeruddin, N. -G. Park, S. D. Tilley, H. J. Fan and M. Grätzel Science, 345 (2014) 1593 [2] A. Paracchino, V. Laporte, K. Sivula, M. Grätzel, E. Thimsen, Nat. Mater. 10 (2011) 456
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
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.