Publication date: 17th February 2025
Shortwave infrared (SWIR) light emitters and detectors are indispensable across various fields, yet conventional technologies based on epitaxially grown semiconductors like InGaAs are costly and complex to integrate with CMOS technology. Colloidal quantum dots (CQDs) offer a promising alternative through solution-based processing, but prevalent SWIR-active CQD systems often involve heavy metals, limiting their widespread adoption. Here we present significant strides in InAs colloidal nanorods technology aimed at overcoming these limitations. Initially, we address the challenge of synthesizing SWIR-active InAs nanorods by developing a controlled synthesis method using safer, more readily available precursors. This approach enables the production of monodisperse InAs nanorods with tunable bandgaps 2000 nm, expanding their applicability into the extended-SWIR spectrum. Furthermore, we introduce a novel surface-passivation technique with InAs/ZnSe core/shell colloidal nanorods. These nanorods exhibit exceptional emissive properties, demonstrating high photoluminescence quantum yields of up to 60% across the entire technologically crucial SWIR range (1200–1800 nm). Leveraging these advancements, we showcase a SWIR-active InAs nanorod photodetector achieving a record external quantum efficiency of ∼15% at ∼1450 nm. Our findings underscore the potential of InAs CQDs as robust candidates for next-generation SWIR optoelectronic devices, combining high performance with environmentally friendly materials and scalable synthesis methods suitable for industrial applications.
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.