title: Solution-Based Synthesis of Layered Intergrowth Compounds of the Homologous Pbm Bi2n Te3n+m Series as Nanosheets.
abstract: Layered intergrowth compounds in the homologous Pbm Bi2n Te3n+m family are interesting because they are examples of natural heterostructures. We present a simple solution-based synthesis of two-dimensional nanosheets of PbBi2 Te4 , Pb2 Bi2 Te5 , and PbBi6 Te10 layered intergrowth compounds, which are members of the Pbm Bi2n Te3n+m [that is, (PbTe)m (Bi2 Te3 )n ] homologous series. Few-layer nanosheets exhibit narrow optical band gaps (0.25-0.7 eV) with semiconducting electronic-transport properties.
authors.affiliation: New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bangalore (India) http://www.jncasr.ac.in/kanishka/
authors.forename: Arindom
authors.initials: A
authors.lastname: Chatterjee
authors.forename: Kanishka
authors.initials: K
authors.lastname: Biswas
keywords: intergrowth compounds; nanosheets; nanostructures; semiconductors; ternary metal chalcogenides