Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV24)
DOI: https://doi.org/10.29363/nanoge.hopv.2024.006
Publication date: 6th February 2024
Since the pioneer work of Brian O’Regan and Michael Grätzel in 1991, dye-sensitized solar cells (DSSC) have attracted many attentions for their ease of fabrication, their performances and their stability. Despite efficiencies above 15% nowadays, DSSCs are not yet able to compete with more mature technologies such as silicon solar cells (efficiency around 20%). However, DSSCs are displaying unique advantages such as semi-transparency, high efficiency under low-light intensity and a pleasing aesthetic making them highly attractive for indoor application or building integrated photovoltaic.
The development of photochromic DSSCs, which can self-adapt their light transmission to the intensity of the ambient light, could be crucial for developing BIPV. We focus on the previously reported diphenyl-naphthopyran series [1], analyzing their optoelectronic behavior by adapting small-perturbation techniques to the inherent properties of the photochromic dye to unravel the electronic processes at the electrode-dye-electrolyte interfaces[2]. We use molecular engineering to develop different series of naphthopyran dyes with an identical pi-conjugated backbone and varying alkyl substituents reported to control the discoloration kinetics and reduce the recombination processes, achieving power conversion efficiencies of over 4.3% [3]. We also report a new family of photochromic dyes introducing a diphenylamine-type donor moiety and functionalized carbazoles, to tune their optical properties to match the photopic response of the human eyes[4].
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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.
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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.
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