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Synthesis of ZnS Nanowires and Assemblies by Carbothermal Chemical Vapor Deposition and Their Photoluminescence
Author(s) -
Zhang Hua,
Zhang Shuyuan,
Zuo Ming,
Li Gongpu,
Hou Jianguo
Publication year - 2005
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200400668
Subject(s) - nanowire , wurtzite crystal structure , photoluminescence , chemical vapor deposition , chemistry , vapor–liquid–solid method , x ray photoelectron spectroscopy , nanotechnology , chemical engineering , sulfur , scanning electron microscope , crystallography , materials science , optoelectronics , organic chemistry , hexagonal crystal system , engineering , composite material
A carbothermal method combined with CVD has been developed to synthesize ZnS nanowires and their self‐assemblies at low temperatures. In this process, active carbon serves as reductant to react with sulfur, which then goes on to form ZnS nanowires. X‐ray diffraction and X‐ray photoelectron spectroscopy studies indicate that the samples are single‐crystal wurtzite ZnS and are rich in sulfur. The nanowires have diameters ranging from 20 to 60 nm. High‐resolution electron microscopy shows the [100] growth direction for the mono‐dispersed nanowires and the different crystal orientation for the nanowires constituting the assembly. The photoluminescence (PL) peak is located at 490 nm. A vapor‐solid (VS) mechanism might explain the formation of ZnS nanowires. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)