산화아연-탄소나노튜브 복합체의 일산화질소 가스 감지 특성

박성용; 정훈철; 안은성; 웬래훙; 강영진; 김효진; 김도진; SeongYong Park; Hoonchul Jung; Eunseong Ahn; Le Hung Nguyen; Youngjin Kang; Hyojin Kim; Dojin Kim

Korean Journal of Materials Research, Vol.18, No.12, 655-659, December, 2008

DOI10.3740/MRSK.2008.18.12.655 Export Citation

산화아연-탄소나노튜브 복합체의 일산화질소 가스 감지 특성

NO Gas Sensing Properties of ZnO-Carbon Nanotube Composites

박성용, 정훈철, 안은성, 웬래훙, 강영진, 김효진 ^†, 김도진

충남대학교 공과대학 나노공학부

SeongYong Park, Hoonchul Jung, Eunseong Ahn, Le Hung Nguyen, Youngjin Kang, Hyojin Kim^†, and Dojin Kim

School of Nano Science and Technology, Chungnam National University, Daejon 305-764, Korea

E-mail:

The NO gas sensing properties of ZnO-carbon nanotube (ZnO-CNT) composites fabricated by the coaxial coating of single-walled CNTs with ZnO were investigated using pulsed laser deposition. Upon examination, the morphology and crystallinity of the ZnO-CNT composites showed that CNTs were uniformly coated with polycrystalline ZnO with a grain size as small as 5-10 nm. Gas sensing measurements clearly indicated a remarkable enhancement of the sensitivity of ZnO-CNT composites for NO gas compared to that of ZnO films while maintaining the strong sensing stability of the composites, properties that CNT-based sensing materials do not have. The enhanced gas sensing properties of the ZnO-CNT composites are attributed to an increase in the surface adsorption area of the ZnO layer via the coating by CNTs of a high surface-tovolume ratio structure. These results suggest that the ZnO-CNT composite is a promising template for novel solid-state semiconducting gas sensors.

Keywords:ZnO gas sensor;carbon nanotube;ZnO-CNT composite

[References]

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Barsan N, Koziej D, Weimar U, Sensors and Actuators B,, 121, 18 (2007)
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Koshizaki N, Oyama T, Sensors and Actuators B, 66, 119 (2000)

[Referenced By]

[Related Articles]

[1] Eranna G, Joshi BC, Runthala DP, Gupta RP, Crit. Rev. Sol. Sta. Mater. Sci., 29, 111 (2004)

[2] Barsan N, Koziej D, Weimar U, Sensors and Actuators B,, 121, 18 (2007)

[3] Xu J, Pan Q, Shun Y, Tian Z, Sensors and Actuators B, 66, 277 (2000)

[4] Gao T, Wang TH, Appl. Phys. A, 80, 1451 (2005)

[5] Fan Z, Lu JG, J. Nanosci. Nanotech., 5, 1561 (2005)

[6] Dikovska AO, Sensors and Actuators A, 140, 19 (2007)

[7] Kong J, Franklin NR, Zhou C, Chapline MC, Peng S, Cho J, Dai H, Science, 287, 622 (2000)

[8] Collins PG, Bradley K, Ishigami M, Zettl A, Science, 287(5459), 1801 (2000)

[9] Wisitsoraat A, Tuantranont A, Thanachyanont C, Singjai P, in Proceedings of the 1st IEEE International Conference on Nano/Micro Engineered and Molecular Systems (Zhuhai, China, January 2006), p.1487. (2006)

[10] An KH, Jeong SY, Hwang HR, Lee YH, Adv. Mater., 16(12), 1005 (2004)

[11] Ikuno T, Yasuda T, Honda S, Oura K, Katayama M, Lee G, Mori H, J. Appl. Phys., 98, 114305 (2005)

[12] Kang YJ, Oh DH, Song HJ, Jung JY, Jung H, Cho YS, Kim DJ, Korean J. Mater. Res., 18(5), 253 (2008)

[13] Ito S, Suwa Y, Kondo S, Kameoka S, Tomishige K, Kunimori K, Catal. Commun., 4, 499 (2003)

[14] Kelly R, Miotello A, Pulsed Laser Deposition of Thin Films, p.55, ed. Chrisley DB, Hubler GK, John Wiley & Sons, New York, (1994). (1994)

[15] Ianno NJ, McConville L, Shaikh N, Pittal S, Snyder PG, Thin Solid Films, 220, 92 (1992)

[16] Solis JL, Lantto V, Sensors and Actuators B, 48, 322 (1998)

[17] Koshizaki N, Oyama T, Sensors and Actuators B, 66, 119 (2000)