Proceedings of 6th International Conference on Hybrid and Organic Photovoltaics (HOPV14)
Publication date: 1st March 2014
Solution-processable organic-inorganic hybrid solar cells based on the lead iodide perovskite (CH3NH3PbI3) exhibit remarkably high power conversion efficiency (PCE).The key issue for optimizing PCE is to match the electronic energy levels of the perovskite to the adjacent organic hole and electron transporting layers. Here we employ ab initio calculations and photoelectron spectroscopy to unravel the electronic structure and charge redistribution between organic hole acceptor Spiro-OMeTAD, electron acceptor PCBM and CH3NH3PbI3 with surface orientations (001) or (100). We found that calculated energy levels are in good agreement with experimental values obtained by ultraviolet photoelectron spectroscopy measurements. Compared to the (100) orientation, the CH3NH3PbI3 (001) surface tends to favour hole injection to Spiro-OMeTAD and electron transfer to PCBM, resulting in larger number of transferred Bader charges and hole/electron accumulation at the CH3NH3PbI3/organic interfaces. Molecular dynamic simulations suggest that this is due to the stronger electronic coupling induced by thermal fluctuations at room temperature, overall indicating that perovskite crystallization and surface orientation are extremely important design parameters to optimize charge separation and extraction in hybrid solar cells.
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.