Structural evolution induced by Au atom diffusion in Ag₂S

Abstract

The transition from amorphous Ag2S to crystalline AuAgS or Ag3AuS2 was discovered through Au single-atom diffusion.

Metal/semiconductor interfaces in nanoscale objects: synthesis, emerging properties and applications of hybrid nanostructures

“…Another aspect of characterization is the new information gained using aberration-corrected TEM or STEM: the atomic resolution was already applied to gain mechanistic insight for questions such as SC growth kinetics, 410 structural evolution by atom diffusion, 411 surface reconstruction, 185 composition and bonding in multilayer or multivalent oxides, 412 crystal structures of growing 1D materials from metallic catalysts (though usually in gas-phase syntheses), 413,414 defects in 2D materials, 415 liquid metal/metal-nitride interfaces 416 and structural changes on the atomic level of SC NRs/M tips. 417 We expect that its use would expand and allow further understanding of reaction intermediates.…”

DNA‐Programmable AgAuS‐Primed Conductive Nanowelding Wires‐Up Wet Colloids

“…Initially, it was observed that AuNPs spontaneously diffused out of Ag 2 S shells in the form of gold atoms, resulting in heterodimeric Au‐Ag 2 S structures [10a] . Diffusion of Au into the Ag 2 S domain enabled a tight bonding between gold and Ag 2 S particles via an interfacial AgAuS layer [10b,c,f,g] . Also, cation exchange happened in the Ag 2 S and AgAuS phases to form various interesting structures [10h,j,l] .…”

Light Absorption and Scattering by Silver/Silver Sulfide Hybrid Nanoparticles

“…When Ag 2 S NPs were doped with lithium, the light absorption increased, translating into larger photocurrents . Ag 2 S NPs represent a versatile and robust scaffold for doping and designing hybrid nanostructures that have enhanced optical, electrical, and chemical properties. − Enhanced photoluminescence in the near-IR was also observed from Ag 2 S quantum dots (2–10 nm), , rendering them important for bioimaging. The low toxicity associated with the largely insoluble nature of Ag 2 S as well as strong photoluminescence in near-IR was explored for multisystem and organ imaging. − …”