Proceedings of nanoGe September Meeting 2017 (NFM17)
Publication date: 20th June 2016
Solution-processed materials have significant promise for future generation solar cells. We will discuss our efforts to understand charge transport and carrier lifetimes as a function of structure in two classes of materials for thin film solar cells.
Organic photovoltaics have a bulk heterojunction (BHJ) structure where an electron donor and acceptor meet in a bicontinuous network with nanoscale dimensions. The development of non-fullerene acceptors has led to prospects for improvement of their power conversion efficiency through reduced losses in the open circuit voltage. We will discuss recent work to understand the origin of these effects in non-fullerene acceptors through microstructural studies and device characterization.
Hybrid organic metal halides, such as CH3NH3PbI3, have garnered significant attention because they are earth-abundant, solution processable materials with high power conversion efficiency. The origin of the observed long carrier lifetimes in these materials that improve their electronic properties are still under significant debate. We will present our recent work on the properties of layered materials systems formed by replacement of halide ions by the pseudohalide thiocyanate (SCN-) and by the introduction of a mixed organic cations to form Ruddlesden-Popper structures. Using time-resolved microwave conductivity (TRMC), the carrier mobility of CH3NH3Pb(SCN)2I was found to be relatively high and comparable to that of polycrystalline CH3NH3PbI3 along with similar carrier lifetimes. In contrast, the layered R-P materials layered with organic cations do not show such apparent long lifetimes. We will present structural studies of polycrystalline thin films that help to address this difference in behavior.
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.