Publication date: 17th February 2025
Singlet fission (SF) is a spin allowed process that allows the sharing of energy from a singlet exciton with a near neighbouring chromophore to generate two triplet excitons, through a correlated triplet pair and a coupled triplet pair. When the triplet energy is matched to the bandgap energy an underlying solar cell it is theoretically possible to increase the solar cell efficiency from 33% to 45%, however only modest gains have been demonstrated to date.
New SF chromophores, especially those energy matched to silicon, are required. We have demonsrated tuning of the absolute and relative energy levels in SF chromophores by controlling the captodative stabilization of diketopyrrolopyrrole chromophore.
In Addition, many potentially important molecular chromophores do not support singlet fission in the solid state due to poor crystal packing. We have demonstrated that by introducing a bridge, to promote secondary self-assembly in the solid state, between two potential SF chromophores we can turn on SF in otherwise SF inactive molecules. In this talk I will discuss molecular design for SF chromophores energy matched to silicon, and crystal engineering, molecular aggregation and molecular design in new SF systems.
This work is funded by the Australian Government through the Australian Centre for Advanced Photovoltaics (ACAP), the Australian Renewable Energy Agency (ARENA). The Australian Government does not accept responsibility for the views, information or advice expressed herein.
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.