DOI: https://doi.org/10.29363/nanoge.incnc.2021.030
Publication date: 8th June 2021
Quantum dots have emerged as technologically relevant materials for efficient optoelectronic devices, such as LED televisions and solar cells. However, they are often unstable as thin films or as inks in the environment or during their processing.
In this talk, I will discuss how oxide shells can help to overcome such issues. I will focus on our recently developed colloidal atomic layer deposition (c-ALD) approach to grow tunable alumina shells around quantum dots.[1] I will briefly compare the c-ALD with the previously developed gas-phase ALD in film.[2] This newly developed synthesis has the advantage of preserving the colloidal stability of the nanocrystalline core while controlling the shell thickness from 1 to 6 nm.[1] I will describe the details on how the aluminum precursor interacts with the surface of the QDs during the nucleation step and how the shell eventually grows. Finally, I will also discuss some of our recent founding on the impact of a thin metal oxide shell on the dynamicity of the quantum dots ligands.
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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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