Publication date: 15th December 2025
The urgent demand for high-efficiency infrared photon conversion has underscored the potential of colloidal quantum dots (CQDs) as solution-processable absorbers for advanced optoelectronic applications, including photovoltaics (PVs), thermophotovoltaics (TPVs), and photodetectors (PDs). Nonetheless, the practical deployment of shortwave infrared (SWIR) CQDs has been hindered by persistent challenges in achieving monodisperse particle distributions and complete surface passivation. In this work, we present a ligand-pairing strategy specifically optimized for SWIR CQDs, enabling precise modulation of surface chemistry during both synthesis and post-synthetic ligand exchange. A thiourea-derived precursor with tunable reactivity facilitates the formation of CQDs with enhanced size uniformity and colloidal stability, particularly in the large-size regime. Subsequent surface reconstruction using bifunctional atomic ligands effectively displaces residual amines and passivates the (100) facets, thereby minimizing trap states. The resulting SWIR CQD-based optoelectronic devices demonstrate near-unity internal quantum efficiency and deliver high performance across diverse applications, including PV, TPV, and PD, establishing a new performance benchmark for solution-processed SWIR technologies.
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.