Solvothermal synthesis and photoluminescent properties of ZnS/cyclohexylamine: inorganic-organic hybrid semiconductor nanowires.
An inorganic-organic hybrid semiconductor, ZnS/CHA (CHA = cyclohexylamine) nanocomposites was successfully synthesized via a solvothermal method using CHA as solvent, which yielded uniform and ultralong nanowires with widths of 100-1000 nm and lengths of 5-20 microm. Changing the reaction conditions could alter the morphology and optical properties of the nanocomposites. The periodic layer subnanometer structures were identified by high-resolution transmission electron microscopy (HR-TEM) images, with thickness of approximately 2 nm. The composites exhibited a very large blue-shift in their optical absorption edge as well as an exciton excitation band due to a strong quantum confinement effect caused by the internal subnanometer-scale structures. The pure hexagonal wurtzite ZnS nanowires were also obtained by extracting the ZnS/CHA nanocomposites with dimethyl formamide (DMF). In addition, the luminescent properties of exciton and defect-related transitions in different samples of ZnS/CHA were discussed in detail.
Fan
Libo
L
Key Laboratory of Excited-State Physics, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, 16 Eastern South-Lake Road, Changchun 130033, P. R. China. hwsong2005@yahoo.com.cn
Song
Hongwei
H
Zhao
Haifeng
H
Pan
Guohui
G
Yu
Hongquan
H
Bai
Xue
X
Li
Suwen
S
Lei
Yanqiang
Y
Dai
Qilin
Q
Qin
Ruifei
R
Wang
Tie
T
Dong
Biao
B
Zheng
Zhuhong
Z
Ren
Xinguang
X
D003514:Cyclohexylamines / Q000138:chemical synthesis / Q000737:chemistry*; D049449:Luminescence; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D053770:Nanowires; D012212:Rheology; D012666:Semiconductors; D017550:Spectroscopy, Fourier Transform Infrared; D013440:Sulfides / Q000138:chemical synthesis / Q000737:chemistry*; D017967:Zinc Compounds / Q000138:chemical synthesis / Q000737:chemistry*
D003514:Cyclohexylamines; D013440:Sulfides; D017967:Zinc Compounds; C031238:zinc sulfide