X-ray spectroscopy study of Zn_xSn_1 ?xO₂ nanorods synthesized by hydrothermal technique

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• 作者：Sanjeev Gautam ; Anup Thakur ; Ankush Vij ; Jaekwon Suk ; Ik-Jae Lee ; Yong-Jun Park ; Tae-Joo Shin ; Min-Gyu Kim ; Hyun-Joon Shin ; Jenn-Min Lee ; Jin-Ming Chen ; Jonghan Song ; Keun Hwa Chae
• 关键词：ZnxSn1&minus ; xO2 ; Zn-doped SnO2 ; Crystal morphology ; Hydrothermal crystal growth ; Nanomaterials ; Semiconducting materials
• 刊名：Thin Solid Films
• 出版年：2013
• 出版时间：1 November, 2013
• 年：2013
• 卷：546
• 期：Complete
• 页码：250-254
• 全文大小：734 K

文摘

An environment friendly, inexpensive solvothermal route is used to synthesize polycrystalline Zn_xSn_1 ?xO₂ (0.0 ¡Ü x ¡Ü 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 Zn_xSn_1 ?xO₂ nanorods. SEM analysis reveals that Zn incorporation in SnO₂ decreases the nanorod diameter from ~ 20 nm to ~ 10 nm. High-resolution x-ray diffraction analysis reveals the rutile structure for x ¡Ü 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.