Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV23)
DOI: https://doi.org/10.29363/nanoge.hopv.2023.099
Publication date: 30th March 2023
We and others have recently reported that certain classes of radical organic semiconductors can be used as efficient light emitters in LED devices. Excitation within the doublet manifold can avoid the formation of non-emissive higher spin states and therefore allow efficient radiative electron-hole recombination [1]. We have developed this primarily for use in light-emitting applications, but the avoidance of ‘dark’ low energy excitations (ordinarily triplets) is also very desirable for improved organic photovoltaic devices.
have found that structures where the lowest double excited state involves promotion of an electron from a HOMO level associated with a donor moiety such as carbazole to the radical SOMO level can show very high luminescence yield [2], and we have optimised structures so that it is possible to electrically excite this doublet state, by sequential charge transfer of electron and hole, taking account of the Coulomb charging energy for double occupancy of the SOMO [3]. have also explored the use the radical semiconductor as the emissive ‘guest’ in a regular organic LED emissive layer ‘host’ where the radical semiconductor is able to harvest both singlet and triplet excitons formed in the host material [4]. I will also report on recent studies of intermolecular charge photogeneration in guest-host radical-donor systems.
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.