Also called AgSePh, mithrene, silver benzeneselenolate, MOCHAs
A layered semiconductor that assembles itself out of solution. In mithrene, silver–selenium sheets alternate with phenyl rings, so the inorganic layer is a quantum well and the organic layer is the barrier, all in one crystal that grows at the interface between two liquids. The result emits a narrow blue line at room temperature – rare among 2D materials, where most bright emitters are in the red or infrared – and the chemistry is tunable: change the ligand or the metal and the family changes with it.
Readiness runs lab → prototype → pilot → deployed.
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A hybrid quantum well that needs both solid-state and molecular thinking: the inorganic silver–selenium sheet carries the band structure, the organic layer sets the dielectric environment, and the exciton binding energy follows from the contrast between them. Because the barrier is a molecular layer rather than a wide-gap crystal, screening is weak and excitons are tightly bound, and any calculation has to handle the ligand conformations and the soft, anharmonic lattice they form.
Growth conditions are the experiment: at a liquid–liquid interface, concentration, temperature and time determine crystal size and quality, so report them. For optics, distinguish the intrinsic narrow emission from defect and surface emission by measuring temperature dependence and excitation power. Keep thermal budgets low during processing – the organic layer decomposes long before an inorganic semiconductor would.
Interesting as a solution-processed blue emitter with a narrow line, made from cheap elements without rare-earth or cadmium chemistry. The obstacles are film uniformity, contact chemistry and the thermal ceiling set by the ligands.
The newest items tagged Mithrene (AgSePh), from the news feed updated 5 Oct 2026.
Artificial atom-like systems are a promising candidate for next generation quantum processing. Among them, dark excitons exhibit one of the longest lifetimes at high temperatures. Here, we demonstrate coherent control of dark excitonic states in metal-organic chalcogenolates (MOChas) by using an ultrafast pulse shaper…
Ultraviolet (UV) exciton-polaritons (EPs) enable nonlinear optics, polaritonic lasing, and polariton-mediated photochemistry in the short-wavelength regime, yet progress has been limited due to the scarcity of materials that combine large oscillator strength with stable and narrow UV excitons. Here, we demonstrate UV…
2D materials exhibiting in-plane anisotropy enable novel functionality in electronic, optoelectronic, and photonic devices, yet their availability is generally limited to naturally-occurring low-symmetry van der Waals compounds. Here, we demonstrate an approach to structural engineering in a family of blue-emitting 2D…
Exciton-polaritons (EPs) arising from strong light-matter coupling offer new pathways for controlling optoelectronic properties. While typically requiring closed optical cavities for strong coupling, we demonstrate that 2D metal-organic chalcogenolates (MOCs), mithrene (AgSePh), with a high refractive index (~2.5) and…
Silver phenylselenide (AgSePh), known as mithrene, is a two-dimensional (2D) organic-inorganic chalcogenide (MOC) semiconductor with a wide direct band gap, narrow blue emission and in-plane anisotropy. However, its application in next-generation optoelectronics is limited by crystal size and orientation, as well as…
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