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According to the macroscopic-long Ag nanowire bundle which is prepared by the solid-state ionics method, we fabricate a macroscopic-long Ag2S nanowire bundle using a gas-solid reaction. Their morphologies and components are characterized by the SEM, TEM, EDS and XPS. Au paints as electrodes are coated on both ends of a cm-long Ag2S nanowire bundle and then connected to an external circuit. The transport properties of the Ag2S nanowire bundle are studied at different temperatures or under the light irradiation of different wavelengths. Without light irradiation, as temperature T increases from 144 K to 380 K, the dark conductance increases nonlinearly with T. At room temperature, the significant positive photoconductivity induced by the 532 nm or 1064 nm laser is observed. These results demonstrate that Ag2S nanowire is a kind of ideal material for making the nanoscale temperature and photoelectric sensors.
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Keywords:
- Ag2S nanowire /
- temperature-conductance /
- photoconductance
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[19] Kashida S, Watanabe N, Hasegawa T, Iida H, Mori M, Savrasov S 2003 Solid State Ionics 158 167
[20] Wang Z C, Gu T K, Kadohira T, Tada T, Watanabe S 2008 J. Chem. Phys.128 014704
[1] Zhao H, Wang Y S, Hou Y B, Xu Z, Xu X R 2000 Acta Phys. Sin. 49 954 (in Chinese) [赵 辉、王永生、侯延冰、徐 征、徐叙瑢 2000 49 954]
[2] Du P, Zhang X Q, Sun X B, Yao Z G, Wang Y S 2006 Chin. Phys. 15 1370
[3] Madelung O. 2004 Semiconductors: Data Handbook (3rd edition) (Berlin: Springer-Verlag) p459
[4] Hodes G, Manassen J, Cahen D 1976 Nature 5559 403
[5] Kitova S, Eneva J, Panov A, Haefke H 1994 J. Imaging Sci. Technol. 38 484
[6] Bruhwiler D, Leiggener C, Glaus S, Calzaferri G 2002 J. Phys. Chem. B 106 3770
[7] Kundu M, Terabe K, Hasegawa T, Aono M 2006 J. Appl. Phys. 99 103501
[8] Du N, Zhang H, Sun H Z, Yang D R 2007 Mater. Lett. 61 235
[9] Wen X G, Wang S H, Xie Y T, Li X Y, Yang S H 2005 J. Phys. Chem. B 109 10100
[10] Niu X S, Liu S H, Xing R M, Wang X J, Zhang B F, Chen J J, Yang L 2007 Mater. Lett. 61 5098
[11] Peng X S, Meng G W, Zhang J, Wang X R, Zhao L X, Wang Y W, Zhang L D 2002 Mater. Res. Bull. 37 1369
[12] Jang K, Kim S Y, Park K H, Jang E, Jun S, Son S U 2007 Chem. Commun. 43 4474
[13] Gao F, Lu Q Y, Zhao D Y 2003 Nano Lett. 3 85
[14] Wang D S, Hao C H, Zheng W, Peng Q, Wang T H, Liao Z M, Yu D P, Li Y D 2008 Adv. Mater. 20 2628
[15] Cao Y, Liu W, Sun J L, Han Y P, Zhang J H, Liu S, Sun H S, Guo J H 2006 Nanotechnology 17 2378
[16] Zemek J, Jiricek P, Hucek S, Jablonski A, Lesiak B 2001 Surf. Sci. 473 8
[17] Cava R J, Reidinger F, Wuensch B J 1980 J. Solid State Chem. 31 69
[18] Cave R J, Mcwhan D B 1980 Phys. Rev. Lett. 45 2046
[19] Kashida S, Watanabe N, Hasegawa T, Iida H, Mori M, Savrasov S 2003 Solid State Ionics 158 167
[20] Wang Z C, Gu T K, Kadohira T, Tada T, Watanabe S 2008 J. Chem. Phys.128 014704
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