Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV19)
Publication date: 6th February 2020
The efficiencies of DSC’s have been increasing recently, with a better understanding of dye processing and massive improvements with co-sensitisation has led to efficiencies greater than 14 %.1
Previous work has shown DSC’s to perform well in the visible light range however they fall short in the NIR which means a large number of photons are not absorbed and therefore wasted. Dyes such as cyanines2 and squaraines3 (as well as many others) have been used to absorb light in the NIR. However, cyanine dyes tend to aggregate and squaraines only have a narrow absorption band in the NIR region which still leaves many photons unharvested.4
One potential dye family that could be used to absorb in the NIR are croconaine dyes.5 Croconaines are identical to squaraines except they have a five membered ring as their core (compared to the four membered ring of squaraines). This extra carbon pushes the absorption of croconaines much further into the NIR most around 800-900 nm with some as high as 1000 nm)5 without compromising on their synthetic versatility and ease of synthesis. Croconaines have been widely published in the literature. However, only one report has been found of their use in a PV device.6 We have synthesised a croconaine dye and for the first time explored their potential as a NIR sensitizer for DSC applications. We hope that this will pave the way for a new wave of high efficiency NIR absorbing DSC devices.
Fig. 1: (Left) A blue coloured squaraine dye compared to its purple croconaine equivalent (right)
We gratefully acknowledge funding provided by from the Welsh Government for Sêr Cymru (PJH), the European Union and Welsh Government for Sparc II (CK, LF, RA), and from EPSRC EP/P030068/1 (DMR) and EP/M015254/1 (AC, EWJ).
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.