Dual Element Intercalation into 2D Layered Bi2Se3 Nanoribbons

• DOI: 10.1021/jacs.5b00666
• Publication Date: 2015-04-08T06:41:19Z
• Authors: Karen P. Chen; Frank R. Chung; Mengjing Wang; Kristie J. Koski
• Keywords: 02 engineering and technology; 0210 nano-technology

We demonstrate the intercalation of multiple zero-valent atomic species into two-dimensional (2D) layered Bi2Se3 nanoribbons. Intercalation is performed chemically through a stepwise combination of disproportionation redox reactions, hydrazine reduction, or carbonyl decomposition. Traditional intercalation is electrochemical thus limiting intercalant guests to a single atomic species. We show that multiple zero-valent atoms can be intercalated through this chemical route into the host lattice of a 2D crystal. Intermetallic species exhibit unique structural ordering demonstrated in a variety of superlattice diffraction patterns. We believe this method is general and can be used to achieve a wide variety of new 2D materials previously inaccessible.