UV Enhanced NO2 Sensing Properties of Pt Functionalized Ga2O3 Nanorods

被引：4

作者：

An, Soyeon ^{[1
]}

Park, Sunghoon ^{[1
]}

Mun, Youngho ^{[1
]}

Lee, Chongmu ^{[1
]}

机构：

[1] Inha Univ, Dept Mat Sci & Engn, Inchon 402751, South Korea

来源：

BULLETIN OF THE KOREAN CHEMICAL SOCIETY | 2013年 / 34卷 / 06期

基金：

新加坡国家研究基金会;

关键词：

Ga2O3; Nanorod; Gas sensor; UV; Functionalization; GAS SENSORS; OXIDE; ZNO; NANOBELTS; NANOWIRES;

D O I：

10.5012/bkcs.2013.34.6.1632

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ga2O3 one-dimensional (1D) nanostructures were synthesized by using a thermal evaporation technique. The morphology, crystal structure, and sensing properties of the Ga(2)O(3)nanostructures functionalized with Pt to NO2 gas at room temperature under UV irradiation were examined. The diameters of the 1D nanostructures ranged from a few tens to a few hundreds of nanometers and the lengths ranged up to a few hundreds of micrometers. Pt nanoparticles with diameters of a few tens of nanometers were distributed around a Ga(2)O(3)nanorod. The responses of the nanorods gas sensors fabricated from multiple networked Ga(2)O(3)nanorods were improved 3-4 fold at NO2 concentrations ranging from 1 to 5 ppm by Pt functionalization. The Pt-functionalized Ga2O3 nanorod gas sensors showed a remarkably enhanced response at room temperature under ultraviolet (UV) light illumination. In addition, the mechanisms via which the gas sensing properties of Ga(2)O(3)nanorods are enhanced by Pt functionalization and UV irradiation are discussed.

引用

页码：1632 / 1636

页数：5

共 28 条

[1] Design and performance of a simple, room-temperature Ga2O3 nanowire gas sensor [J].

Arnold, S. P. ;

Prokes, S. M. ;

Perkins, F. K. ;

Zaghloul, M. E. .

APPLIED PHYSICS LETTERS, 2009, 95 (10)

[2] Oxygen sensing at high temperatures using Ga2O3 films [J].

Baban, C ;

Toyoda, Y ;

Ogita, M .

THIN SOLID FILMS, 2005, 484 (1-2) :369-373

[3] Conduction model of metal oxide gas sensors [J].

Barsan, N ;

Weimar, U .

JOURNAL OF ELECTROCERAMICS, 2001, 7 (03) :143-167

[4] UV sensor based on TiO2 nanorod arrays on FTO thin film [J].

Cao, Chunlan ;

Hu, Chenguo ;

Wang, Xue ;

Wang, Shuxia ;

Tian, Yongshu ;

Zhang, Hulin .

SENSORS AND ACTUATORS B-CHEMICAL, 2011, 156 (01) :114-119

[5] Novel fabrication of an SnO2 nanowire gas sensor with high sensitivity [J].

Choi, Young-Jin ;

Hwang, In-Sung ;

Park, Jae-Gwan ;

Choi, Kyoung Jin ;

Park, Jae-Hwan ;

Lee, Jong-Heun .

NANOTECHNOLOGY, 2008, 19 (09)

[6] UV light activation of tin oxide thin films for NO2 sensing at low temperatures [J].

Comini, E ;

Faglia, G ;

Sberveglieri, G .

SENSORS AND ACTUATORS B-CHEMICAL, 2001, 78 (1-3) :73-77

[7] Light enhanced gas sensing properties of indium oxide and tin dioxide sensors [J].

Comini, E ;

Cristalli, A ;

Faglia, G ;

Sberveglieri, G .

SENSORS AND ACTUATORS B-CHEMICAL, 2000, 65 (1-3) :260-263

[8] Nanopatterned polycrystalline ZnO for room temperature gas sensing [J].

Fan, Shan-Wei ;

Srivastava, Arvind K. ;

Dravid, Vinayak P. .

SENSORS AND ACTUATORS B-CHEMICAL, 2010, 144 (01) :159-163

[9] 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)

[10] Selectivity in high-temperature operated semiconductor gas-sensors [J].

Fleischer, M ;

Meixner, H .

SENSORS AND ACTUATORS B-CHEMICAL, 1998, 52 (1-2) :179-187

← 1 2 3 →