Size-dependent photoconductance in SnO2 nanowires

被引:267
作者
Mathur, S
Barth, S
Shen, H
Pyun, JC
Werner, U
机构
[1] Leibniz Inst New Mat, D-66123 Saarbrucken, Germany
[2] Europe Forschungsgesellsch mbh, KIST, D-66123 Saarbrucken, Germany
关键词
chemical vapor deposition; electron microscopy; nanowires; photoconductivity; single-source precursors;
D O I
10.1002/smll.200400168
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The synthesis and characterization of SnO2 wires, coins, and ribbons by vapor transport synthesis at elevated temperatures has been offered for the improvements as the nanowires, tubes, or rods display the lowest dimensionability for electron transport. The tin oxide nanowires were obtained by ablating a metallic tin target with an Nd:YAG laser under an O2/Ar atmosphere. The gaseous species liberated during the chemical vapor growth of SnO2 nanowires were characterized by on-line mass spectrometric analysis. The growth of tin oxide nanowires follows vapor-liquid-solid (VLS) mechanism, where the VLS model requires the alloying of a metal catalysts with nanowire component for growing quasi-one-dimensional nanostructures. The photoconductance of SnO2 NWs offers a strong modulation that dependends on the average radical dimensions. The results show that stable photoresponse of samples demonstrate their potential for applications in UV detectors.
引用
收藏
页码:713 / 717
页数:5
相关论文
共 22 条
  • [1] Photosensitivity activation of SnO2 thin film gas sensors at room temperature
    Camagni, P
    Faglia, G
    Galinetto, P
    Perego, C
    Samoggia, G
    Sberveglieri, G
    [J]. SENSORS AND ACTUATORS B-CHEMICAL, 1996, 31 (1-2) : 99 - 103
  • [2] EFFECTS OF HIGH-TEMPERATURE SINTERING ON SNO2 SENSOR RESPONSE TO REDUCING GASES
    COLES, GSV
    WILLIAMS, G
    [J]. JOURNAL OF MATERIALS CHEMISTRY, 1992, 2 (01) : 23 - 29
  • [3] UV light activation of tin oxide thin films for NO2 sensing at low temperatures
    Comini, E
    Faglia, G
    Sberveglieri, G
    [J]. SENSORS AND ACTUATORS B-CHEMICAL, 2001, 78 (1-3) : 73 - 77
  • [4] Tin oxide nanowires, nanoribbons, and nanotubes
    Dai, ZR
    Gole, JL
    Stout, JD
    Wang, ZL
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (06) : 1274 - 1279
  • [5] Dye sensitization of nanocrystalline tin oxide by perylene derivatives
    Ferrere, S
    Zaban, A
    Gregg, BA
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (23): : 4490 - 4493
  • [6] SOLID-STATE AND SOLUTION STRUCTURAL INVESTIGATION OF HOMOLEPTIC TIN(IV) ALKOXIDE COMPOUNDS .1. SN(O-TERT-BU)4 AND [SN(O-ISO-PR)4.HO-ISO-PR]2
    HAMPDENSMITH, MJ
    WARK, TA
    RHEINGOLD, A
    HUFFMAN, JC
    [J]. CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE, 1991, 69 (01): : 121 - 129
  • [7] THE MECHANISM OF OPERATION OF TIN(IV) OXIDE CARBON-MONOXIDE SENSORS
    HARRISON, PG
    WILLETT, MJ
    [J]. NATURE, 1988, 332 (6162) : 337 - 339
  • [8] THE DEPOSITION OF PLATINUM-CONTAINING TIN OXIDE THIN-FILMS BY METAL-ORGANIC CVD
    HOULTON, DJ
    JONES, AC
    HAYCOCK, PW
    WILLIAMS, EW
    BULL, J
    CRITRCHLOW, GW
    [J]. CHEMICAL VAPOR DEPOSITION, 1995, 1 (01) : 26 - &
  • [9] Ethylene glycol-mediated synthesis of metal oxide nanowires
    Jiang, XC
    Wang, YL
    Herricks, T
    Xia, YN
    [J]. JOURNAL OF MATERIALS CHEMISTRY, 2004, 14 (04) : 695 - 703
  • [10] Detection of CO and O2 using tin oxide nanowire sensors
    Kolmakov, A
    Zhang, YX
    Cheng, GS
    Moskovits, M
    [J]. ADVANCED MATERIALS, 2003, 15 (12) : 997 - +