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加热覆盖有ZnCl_2溶液的锌片制备ZnO亚微米棒阵列 被引量：3

Synthesis of Aligned ZnO Submicron Rod Arrays by Heating Zinc Foil Covered with ZnCl_2 Solution
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摘要 将表面覆盖有ZnCl2溶液的锌片加热到400℃反应1h,在锌片上生长出了ZnO亚微米棒阵列.采用扫描电镜、透射电子显微镜和X射线衍射仪对所制备的产物进行了表征和分析.结果表明产物为六方相纤锌矿单晶结构的ZnO亚微米棒,其直径和长度分别为300～650nm和6μm,提出了ZnO亚微米棒可能的生长机理.在波长为300nm光的激发下,发现了ZnO亚微米棒阵列具有发光峰位于395nm强的紫外光发光和位于490nm弱的蓝绿光发光,这两种发光分别起源于ZnO宽带隙带边发射和ZnO中相应的缺陷结构. Well-aligned ZnO submicron rod arrays were directly grown on zinc foil by heating zinc foil covered with ZnCl2 solution in air at 400 ℃ for 1 h, and then characterized by scanning electron microscopy, transmission electron microscopy and X-ray powder diffraction. The results showed that the ZnO submicron rods were single crystalline with the wurtzite structure, the diameters and length were 300-650 nm and 6μm, respectively. A possible mechanism was also proposed to account for the formation of ZnO submicron rod arrays. The photoluminescence spectrum of the ZnO submicron rod arrays was studied at room temperature. An intense UV emission at 397 nm and a weak, broader blue-green emission peaking at 490 nm were observed. The UV and blue-green emissions corresponded to the near band-edge emission of the wide band-gap ZnO and related intrinsic defect structures of ZnO, respectively.
作者 马军虎 杨合情 李丽 谢小莉 刘斌 张丽惠 张丽娜
机构地区 陕西师范大学化学与材料科学学院大分子科学陕西省重点实验室
出处 《化学学报》 SCIE CAS CSCD 北大核心 2009年第13期1515-1522,共8页 Acta Chimica Sinica
基金 国家自然科学基金(No20573072) 教育部博士点基金(No20060718010)资助项目
关键词 ZNO 亚微米棒阵列 光致发光 ZnO submicron rod array photoluminescence
分类号 O614.241 [理学—无机化学]
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参考文献33

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二级参考文献59

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共引文献21

同被引文献35

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引证文献3

二级引证文献14

化学学报
2009年 第13期

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