Solvothermal Synthesis of High-Aspect Ratio Alloy Semiconductor Nanowires: Cd1-xZnxS, a Case Study

    Authors

    S. Biswas; S. Kar; S. Santra; Y. Jompol; M. Arif;S. I. Khondaker

    Comments

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    Abbreviated Journal Title

    J. Phys. Chem. C

    Keywords

    ONE-DIMENSIONAL NANOSTRUCTURES; ONE-STEP PREPARATION; COAXIAL CDS-ZNS; OPTICAL-PROPERTIES; QUANTUM DOTS; CORE-SHELL; NANOCRYSTALS; NANORODS; NANORIBBONS; GROWTH; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, ; Multidisciplinary

    Abstract

    High-aspect ratio Cd1-xZnxS (x = 0-1) alloy semiconductor nanowires are reported here for the first time using an ethylenediamine (en)-assisted solvothermal approach. The composition of the en-water (en-w) mixed solvent plays a crucial role in determining the morphology and crystalline phase of the alloy nanowires in the middle range of x (i.e., when x approaches 0.5). A phase transformation from hexagonal to cubic was observed for the middle range of x in an en-dominated solvent (en/w, 5:1). Nanowires with hexagonal phases were formed for the entire range of x with increasing water content of the solvent system (en/w, 2:1). The aspect ratio of the nanowires was found to be dependent on the x value as well as solvent composition. Alloy nanowires exhibit photoresponse properties when illuminated under white light. The synthesis technique is modified to synthesize core-shell Cd1-xZnxS/ZnS nanowires. Enhancement in photoluminescence efficiency is observed with a ZnS shell over the alloy nanowires.

    Journal Title

    Journal of Physical Chemistry C

    Volume

    113

    Issue/Number

    9

    Publication Date

    1-1-2009

    Document Type

    Article

    Language

    English

    First Page

    3617

    Last Page

    3624

    WOS Identifier

    WOS:000263733200039

    ISSN

    1932-7447

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