Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV16)
Publication date: 28th March 2016
The generation of free charge carriers at interfaces between organic electron donors (D) and electron acceptors (A) can be very efficient, enabling organic solar cells with external quantum efficiencies (EQE) higher than 80% and internal quantum efficiencies (IQE) approaching 100%. On the other hand, recombination of free charge carriers at the D-A interface reduces the open-circuit voltage (VOC) and overall power conversion efficiency (PCE) of photovoltaic devices comprising such interfaces.
We demonstrate an optimization route in order to improve the PCE and VOC in multilayer organic solar cells. The deposition of an ultrathin interlayer between D and A creates a discontinuous layer which reduces the D-A interface area and thus free charge carrier recombination, while keeping a high free carrier generation yield. Investigating a series of interlayer materials and multilayer device architectures, we achieve PCE’s above 7.5%. Most notably, this strategy enables a VOC of 1.16 V with a peak external quantum efficiency of 78% at 1.77 eV (700 nm). Such voltage losses below 0.61 V combined with high quantum efficiencies are among the lowest for organic solar cells.
This work provides clear pathways for the minimization of photon energy losses by manipulation of the organic photovoltaic device architecture.
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.