Enhanced UV activation of electrochemically doped Ni in ZnO nanorods for room temperature acetone sensing

被引：69

作者：

Ahn, Hosang ^{[2
]}

Wang, Yaqi ^{[3
]}

Jee, Seung Hyun ^{[1
]}

Park, Minseo ^{[3
]}

Yoon, Young Soo ^{[1
]}

Kim, Dong-Joo ^{[2
]}

机构：

[1] Yonsei Univ, Dept Mat Sci & Engn, Seoul 120749, South Korea

[2] Auburn Univ, Mat Res & Educ Ctr, Auburn, AL 36849 USA

[3] Auburn Univ, Dept Phys, Auburn, AL 36849 USA

来源：

CHEMICAL PHYSICS LETTERS | 2011年 / 511卷 / 4-6期

基金：

美国农业部;

关键词：

QUANTUM DOTS; ZINC-OXIDE; THIN-FILMS; SENSOR; FERROMAGNETISM; FABRICATION; EMISSION;

D O I：

10.1016/j.cplett.2011.06.045

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report the enhanced room temperature gas sensing properties of ZnO nanorods by promoting UV activation via doped Ni in ZnO. Electrodeposition was used to grow nickel-doped ZnO nanorods on flexible substrates integrated with 365 nm UV LED. Nickel concentration varied from 0 at.% to 10 at.% in aqueous solution. An enhanced gas sensing property up to 1.61 at room temperature was measured at 6 at.% Ni-doped ZnO, but showed deteriorated sensitivity due to the formation of a NiO phase at higher Ni concentration. The mechanism for improved sensing properties can be explained by the involvement of weakly bound photo-induced oxygen ions upon the exposure of acetone gas. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：331 / 335

页数：5

共 30 条

[1] Vertically Aligned ZnO Nanorod Sensor on Flexible Substrate for Ethanol Gas Monitoring [J].

Ahn, Hosang ;

Park, Jung-Hyun ;

Kim, Seon-Bae ;

Jee, Seung Hyun ;

Yoon, Young Soo ;

Kim, Dong-Joo .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2010, 13 (11) :J125-J128

[2] Gas sensing properties of defect-controlled ZnO-nanowire gas sensor [J].

Ahn, M. -W. ;

Park, K. -S. ;

Heo, J. -H. ;

Park, J. -G. ;

Kim, D. -W. ;

Choi, K. J. ;

Lee, J. -H. ;

Hong, S. -H. .

APPLIED PHYSICS LETTERS, 2008, 93 (26)

[3] Enhanced and stable green emission of ZnO nanoparticles by surface segregation of Mg [J].

Bang, J ;

Yang, H ;

Holloway, PH .

NANOTECHNOLOGY, 2006, 17 (04) :973-978

[4] Transparent ZnO thin-film transistor fabricated by rf magnetron sputtering [J].

Carcia, PF ;

McLean, RS ;

Reilly, MH ;

Nunes, G .

APPLIED PHYSICS LETTERS, 2003, 82 (07) :1117-1119

[5] Highly Sensitive ZnO Nanowire Acetone Vapor Sensor With Au Adsorption [J].

Chang, Shoou-Jinn ;

Hsueh, Ting-Jen ;

Chen, I-Cherng ;

Hsieh, Shang-Fu ;

Chang, Sheng-Po ;

Hsu, Cheng-Liang ;

Lin, Yan-Ru ;

Huang, Bohr-Ran .

IEEE TRANSACTIONS ON NANOTECHNOLOGY, 2008, 7 (06) :754-759

[6] Hydrothermal synthesis Ni-doped ZnO nanorods with room-temperature ferromagnetism [J].

Cheng, Chuanwei ;

Xu, Guoyue ;

Zhang, Haiqian ;

Luo, Yan .

MATERIALS LETTERS, 2008, 62 (10-11) :1617-1620

[7] Synthesis, structure and ferromagnetic properties of Ni-doped ZnO nanoparticles [J].

Cong, C. J. ;

Hong, J. H. ;

Liu, Q. Y. ;

Liao, L. ;

Zhang, K. L. .

SOLID STATE COMMUNICATIONS, 2006, 138 (10-11) :511-515

[8] UV-activated room-temperature gas sensing mechanism of polycrystalline ZnO [J].

Fan, Shan-Wei ;

Srivastava, Arvind K. ;

Dravid, Vinayak P. .

APPLIED PHYSICS LETTERS, 2009, 95 (14)

[9] UV-Light-Activated ZnO Fibers for Organic Gas Sensing at Room Temperature [J].

Gong, Jian ;

Li, Yinhua ;

Chai, Xinsheng ;

Hu, Zeshan ;

Deng, Yulin .

JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (02) :1293-1298

[10] Solution-grown zinc oxide nanowires [J].

Greene, Lori E. ;

Yuhas, Benjamin D. ;

Law, Matt ;

Zitoun, David ;

Yang, Peidong .

INORGANIC CHEMISTRY, 2006, 45 (19) :7535-7543

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