title: The microstructure and electrical conductivity of mixed-valence TlIn(4)S(5)Cl quaternary compound micro- and nanowires.
abstract: Quaternary mixed-valence compound TlIn(4)S(5)Cl micro- and nanowires are prepared by partial substitution of chalcogen with halogen starting from a stoichiometric mixture of TlCl, In and S. Their electrical conductivity and gas sensitivity properties are investigated by using standard four-terminal systems. The specific nanowire resistivity is about 10(7) Ω cm and corresponds to the value of a typical undoped semiconductor in air. This resistivity is, however, extremely sensitive to NO(2) (sensitivity about 150) or NH(3), with a rapid response of about 2 s and recovery times. This phenomenon is supposed to be particularly important for future nanodevice applications.
authors.affiliation: Institute of Materials Engineering, University of Siegen, Paul-Bonatz-Straße 9-11, D-57076 Siegen, Germany.
authors.forename: Xin
authors.initials: X
authors.lastname: Jiang
authors.forename: Hans-Jörg
authors.initials: HJ
authors.lastname: Deiseroth
authors.forename: Changzhi
authors.initials: C
authors.lastname: Gu
authors.forename: Kledi
authors.initials: K
authors.lastname: Xhaxhiu
authors.forename: Yang
authors.initials: Y
authors.lastname: Huang
authors.forename: Junjie
authors.initials: J
authors.lastname: Li
authors.forename: Renchao
authors.initials: R
authors.lastname: Che
authors.forename: Zongli
authors.initials: Z
authors.lastname: Wang