Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV19)
DOI: https://doi.org/10.29363/nanoge.hopv.2020.016
Publication date: 6th February 2020
There are two key interfaces in dye-sensitized solar cell (DSC) devices; the dye-TiO2 and the dye-electrolyte interface. Most DSC devices are manufactured by submersion dyeing of TiO2 followed by either wetting with liquid electrolyte or by spin coating of a hole transport material (HTM). In practice, this means that dyes and HTM molecules will arrange themselves in whatever is the lowest energy orientation even if this is less favourable to device operation.
The paper will describe our current approaches to surface engineer these interfaces by combining theoretical and experimental approaches1 to designing dye and HTM molecules and processing conditions which enable interfacial self-assembly. This is particularly important when multiple species are involved (e.g. during co-sensitization)2,3 and/or for solid-state DSC devices where the use of solid electrolytes effectively “freezes” interfacial configurations.
In particular, this paper will describe theory versus s experiment for:
- optimising co-sensitization versus the AM1.5 spectrum using optical density, dye loading and TiO2 thickness
- understanding the orientation of dyes and HTMs on TiO2 versus loading using DFT and angle-resolved X-ray photoelectron spectroscopy
- self-assembly approaches at the dye-TiO2 and dye-HTM interface.
The paper will conclude with a consideration of the maximum theoretical device efficiency possible using these approaches.
We gratefully acknowledge funding from EPSRC EP/P030068/1 (DM and RA); EP/M015254/1 (AC, EWJ), the Welsh Government for Sêr Cymru (PJH) and EU for SPARC-II (RA, LF, CK).
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.