Proceedings of International Conference on Hybrid and Organic Photovoltaics 2015 (HOPV15)
Publication date: 5th February 2015
Four push-pull cyclopentadithiophene (CPDT) sensitizers exhibiting efficiencies ranging from 0.82 % to 1.67 % with different anchor groups and/or triphenylamine (TPA)-based moieties were investigated in solid-state dye-sensitized solar-cells (DSCs). We found that the best performing dye molecules show long-lived charges and high injection efficiencies. On the contrary, inefficient dye molecules exhibit short-lived charges and reduced injection efficiency (IE). In fact, the most efficient dye molecules reach injection efficiencies close to unity, whereas the less efficient dye molecules exhibit injection efficiencies of 87%. An efficient dye cation regeneration process is observed for the efficient solar cells, which show long-lived signals, while charges in the less efficient devices decay after 10 ps - 100 ps. We conclude that a combination of dipole moments, reactivity of the molecules towards Li cation additives, and the generation of long-lived dye/hole transporter (Spiro-OMeTAD) cations are essential for the better power conversion efficiency (PCE) of the devices.
Figure 1. Transient absorption kinetics of spiro cations in the solar cell-like samples.
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.