Proceedings of 6th International Conference on Hybrid and Organic Photovoltaics (HOPV14)
Publication date: 1st March 2014
Doping in the photoactive layer of Organic Solar Cells has received relatively little attention to date and is commonly neglected if no specific molecular dopant is intentionally added. Such doping is in fact nearly always inadvertent. Recent modeling studies demonstrate its potential large influence on the electrostatics in a device.1-2 Photoactive layer doping is therefore a key consideration, both with regard to the synthetic and purification strategies employed to control such doping levels, and its impact on the choice of device architecture for optimum solar cell performance.
By combining experimental observations with drift-diffusion simulations on two batches of the same high performance DPP-TT-T:PC71BM solar cells with substantially different doping levels and at different thicknesses, we investigated the way the presence of doping affects the interpretation of optoelectronic measurements of recombination and change transport in organic solar cells. We also present experimental evidence on how unintentional doping can lead to excessively high reactions orders confirming recent predictions.2 Our work suggests that unintentional doping levels need to be reduced to at least 6-7×1015 cm-3 if full optimisation around the second interference maximum of efficient polymer:fullerene solar cells is targeted.
1. Trukhanov, V.A., V.V. Bruevich, and D.Y. Paraschuk, Effect of doping on performance of organic solar cells. Phys. Rev. B 2011, 84, 205318. 2. Kirchartz, T. and J. Nelson, Meaning of reaction orders in polymer:fullerene solar cells. Phys. Rev. B 2012, 86, 165201.
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.