Publication date: 15th December 2025
Colloidal semiconductor quantum dots (CQDs) have widely applied in various fields, range from optoelectronic devices to biological imaging, owing to their unique physicochemical properties like size-tunable absorption and fluorescence emission, high photoluminescence (PL) brightness, facile surface functionalization, and well stability. Thereinto, silver chalcogenide CQDs have garnered a considerable interest because of their narrow bandgap and the absence of toxic heavy metal components. However, synthesizing silver chalcogenide CQDs with high absolute PL quantum yields (PLQYs) remains a great challenge. Here, we have developed gold atom doping and surface ligand passivation strategies for silver chalcogenide CQDs, which effectively suppress their nonradiative recombination of excitons, achieving the CQDs with absolute PLQYs exceeding 87%. In addition, we have further explored the CQDs in near-infrared optoelectronic devices. The CQD integrated into light-emitting diodes (LEDs) achieve an external quantum efficiency (EQE) of 15.8% with electroluminescence extending beyond 1000 nm, while their application in photodiodes yields a specific detectivity exceeding 1013 Jones.
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.