Synthesis of metal-capped semiconductor nanowires from heterodimer nanoparticle catalysts

Bo Shen, Liliang Huang, Jiahong Shen, Lingyuan Meng, Edward J. Kluender, Chris Wolverton, Bozhi Tian, Chad A. Mirkin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Semiconductor nanowires (NWs) capped with metal nanoparticles (NPs) show multifunctional and synergistic properties, which are important for applications in the fields of catalysis, photonics, and electronics. Conventional colloidal syntheses of this class of hybrid structures require complex sequential seeded growth, where each section requires its own set of growth conditions, and methods for preparing such wires are not universal. Here, we report a new and general method for synthesizing metal-semiconductor nanohybrids based on particle catalysts, prepared by scanning probe block copolymer lithography, and chemical vapor deposition. In this process, metallic heterodimer NPs were used as catalysts for NW growth to form semiconductor NWs capped with metallic particles (Au, Ag, Co, Ni). Interestingly, the growth processes for NWs on NPs are regioselective and controlled by the chemical composition of the metallic heterodimer used. Using a systematic experimental approach, paired with density functional theory calculations, we were able to postulate three different growth modes, one without precedent.

Original languageEnglish (US)
Pages (from-to)18324-18329
Number of pages6
JournalJournal of the American Chemical Society
Volume142
Issue number43
DOIs
StatePublished - Oct 28 2020

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

Fingerprint Dive into the research topics of 'Synthesis of metal-capped semiconductor nanowires from heterodimer nanoparticle catalysts'. Together they form a unique fingerprint.

Cite this