Density-controllable growth of SnO2 nanowire junction-bridging across electrode for low-temperature NO2 gas detection

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• 作者：Dang Thi Thanh Le (1)
  Nguyen Van Duy (1)
  Ha Minh Tan (1)
  Do Dang Trung (1)
  Nguyen Ngoc Trung (2)
  Phung Thi Hong Van (1)
  Nguyen Duc Hoa (1)
  Nguyen Van Hieu (1)
  
• 刊名：Journal of Materials Science
• 出版年：2013
• 出版时间：October 2013
• 年：2013
• 卷：48
• 期：20
• 页码：7253-7259
• 全文大小：817KB
• 参考文献：1. Eranna G, Joshi BC, Runthala DP, Gupta RP (2004) Crit Rev Solid State Mater Sci 29:111 CrossRef
  2. Jiménez-Cadena G, Riu J, Rius FX (2007) Analyst 132:1083 CrossRef
  3. Sysoev VV, Schneider T, Goschnick J, Kiselev I, Habicht W, Hahn H et al (2009) Sens Actuators B 139:699 CrossRef
  4. Park J-H, Lim D-G, Choi Y-J, Kim DW, Choi K-J, Park J-G (2007), Proceedings of the 7th IEEE international conference on nanotechnology, p 1054
  5. Kim GB, Lim DG, Park HJ, Choi YJ, Park JG (2011) Appl Surf Sci 257:4715 CrossRef
  6. Ahn MW, Park KS, Heo JH, Kim DW, Choi KJ, Park JG (2009) Sens Actuators B Chem 138:168 CrossRef
  7. Choi YJ, Hwang IS, Park JG, Choi KJ, Park JH, Lee JH (2008) Nanotechnology 19:095508 CrossRef
  8. Thong LV, Loan LTN, Van Hieu N (2010) Sens Actuators B 112:112 CrossRef
  9. Li L, Zong F, Cui X, Ma H, Wu X, Zhang Q, Wang Y, Yang F, Zhao J (2007) Mater Lett 61:4152 CrossRef
  10. Park Y, Choi S, Kim SS (2011) J Phys Chem C 115:12774 CrossRef
  11. Calestani D, Zha M, Zappettini A (2005) Mater Sci Eng C 25:625 CrossRef
  12. Mulla IS, Ramgir NS, Hwang YK, Chang JS (2004) J Ind Eng Chem 10:1242
  13. Comini E (2006) Analytica Chimica Acta 568:28 CrossRef
  14. Choi S-W, Jung S-H, Kim SS (2011) Nanotechnology 22:225501 CrossRef
  15. Kim H, An S, Jin C, Lee C (2012) Curr Appl Phys 12:1125 CrossRef
  16. Hwang IS, Choi YJ, Park JH, Park JG (2006) J Korean Phys Soc 49:1229
  17. Choi SW, Jung SH, Kim SS (2011) J Hazard Mater 193:243 CrossRef
  18. Kanan SM, El-Kadri OM, Abu-Yousef I, Kanan MC (2009) Sensors 9:8158 CrossRef
  19. Van Hieu N, Duc NAP, Trung T, Tuan MA, Chien ND (2010) Sens Actuators B144:450
  20. Barsan N, Koziej D, Weimar U (2007) Sens Actuators B 121:18 CrossRef
  21. Chambon L, Germain JP, Pauly A, Demarne V, Grisel A (2007) Sens Actuators B60:138
  
• 作者单位：Dang Thi Thanh Le (1)
  Nguyen Van Duy (1)
  Ha Minh Tan (1)
  Do Dang Trung (1)
  Nguyen Ngoc Trung (2)
  Phung Thi Hong Van (1)
  Nguyen Duc Hoa (1)
  Nguyen Van Hieu (1)
  
  1. International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST), Hanoi, Vietnam
  2. School of Engineering Physics (SEP), Hanoi University of Science and Technology (HUST), Hanoi, Vietnam
  

文摘

The junction-bridging structure of metal oxide nanowires (NWs) improves gas-sensing properties. In this study, an on-chip growth method was used to fabricate gas sensors, it easily and effectively controls NW junctions. SnO2 NWs were synthesized by thermal evaporation at 800?°C with tin powder as the source. The density of the NW junctions was controlled by changing the mass of the source material. A source material with large mass yielded high-density NW junctions. With electrode spacing of 20?μm, NW junctions were formed from the source material of larger than 2?mg. Gas sensing results revealed that the junction sensors exhibited a good response to NO2 gas at a concentration of 1-0?ppm. The sensors exhibited a good response to NO2 gas at low temperature of up to 100?°C and short response–recovery time (~20?s). The sensors also had good selectivity to NO2 gas. The response (R gas /R air) to 1?ppm NO2 was as high as 22 at 100?°C, whereas the cross gas responses (R air /R gas) to 10?ppm CO, 10?ppm H2S, 100?ppm C2H5OH, and 100?ppm NH3 were negligible (1.1-.3).