Publication date: 15th December 2025
Conventional blue-emitting materials often struggle to simultaneously achieve narrow emission linewidth, chemical stability, and compatibility with thin-film device fabrication. These limitations are especially pronounced in solution-processed systems, where uncontrolled nucleation frequently leads to rough and non-uniform films. Here, we present a vapor-phase strategy to synthesize uniform, covalently bonded organic-inorganic hybrid AgSePh thin films. By sequentially depositing metallic Ag and diphenyldiselenide (Ph2Se2) in the vapor phase and inducing amine-assisted crystallization, we obtain high-quality films that preserve the intrinsic deep-blue emission characteristics of AgSePh. The resulting films exhibit a peak emission at 466 nm with a narrow full width at half maximum (FWHM) of 16.6 nm, satisfying the high color-purity requirements for advanced display technologies. Using these films, we demonstrate the first AgSePh-based blue light-emitting diodes, confirming stable and intrinsic electroluminescence (EL) from this material. This work provides a practical route for integrating insoluble metal-organic chalcogenide (MOC) emitters into thin-film devices and highlights their potential as a robust platform for next-generation high color-purity blue displays.
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (RS-2023-00283597, RS-2024-00408951).
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.