X-ray spectroscopy study of ZnxSn1-xO2 nanorods synthesized by hydrothermal technique

被引:13
作者
Gautam, Sanjeev [1 ]
Thakur, Anup [2 ]
Vij, Ankush [1 ]
Suk, Jaekwon [1 ]
Lee, Ik-Jae [2 ]
Park, Yong-Jun [2 ]
Shin, Tae-Joo [2 ]
Kim, Min-Gyu [2 ]
Shin, Hyun-Joon [2 ]
Lee, Jenn-Min [3 ]
Chen, Jin-Ming [3 ]
Song, Jonghan [1 ]
Chae, Keun Hwa [1 ]
机构
[1] Korea Inst Sci & Technol, Adv Anal Ctr, Seoul 136791, South Korea
[2] POSTECH, Pohang Accelerator Lab, Pohang 790784, South Korea
[3] NSRRC, Hsinchu 30076, Taiwan
关键词
ZnxSn1-xO2; Zn-doped SnO2; Crystal morphology; Hydrothermal crystal growth; Nanomaterials; Semiconducting materials; CRYSTALLINE SNO2 NANORODS; DOPED SNO2; OPTICAL-PROPERTIES; CDSE NANOCRYSTALS; ROOM-TEMPERATURE; SOLUTION-PHASE; ZNO NANORODS; GAS SENSORS; GROWTH; SEMICONDUCTOR;
D O I
10.1016/j.tsf.2013.05.123
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
An environment friendly, inexpensive solvothermal route is used to synthesize polycrystalline ZnxSn1-xO2 (0.0 <= x <= 0.07) nanorods with nanoflower morphology without using any organic solvents, surfactant or any catalytic agent under low hydrothermal pressure. Scanning electron microscopy (SEM) equipped with energy-dispersive x-ray spectra depicts the formation of near stoichiometric ZnxSn1-xO2 nanorods. SEM analysis reveals that Zn incorporation in SnO2 decreases the nanorod diameter from similar to 20 nm to similar to 10 nm. High-resolution x-ray diffraction analysis reveals the rutile structure for x <= 0.04 samples, while for x = 0.07 a Zn2SnO4 phase is observed. Near edge x-ray absorption fine structure and x-ray photoemission spectroscopy indicate that Zn atoms have been substituted for Sn sites in SnO2 lattice without forming secondary phases and also create numerous oxygen vacancy in the structure. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码:250 / 254
页数:5
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