Electrical property measurements of Cr-N codoped TiO2 epitaxial thin films grown by pulsed laser deposition

被引：11

作者：

Jacimovic, J. ^{[1
]}

Gaal, R. ^{[1
]}

Magrez, A. ^{[1
]}

Forro, L. ^{[1
]}

Regmi, M. ^{[2
]}

Eres, Gyula ^{[2
]}

机构：

[1] Ecole Polytech Fed Lausanne, Lab Phys Complex Matter, CH-1015 Lausanne, Switzerland

[2] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA

来源：

APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 17期

关键词：

ANATASE TIO2; METAL; CONDUCTIVITY; PRESSURE;

D O I：

10.1063/1.4804240

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The temperature dependent resistivity and thermo-electric power of Cr-N codoped TiO2 were compared with that of single element N and Cr doped and undoped TiO2 using epitaxial anatase thin films grown by pulsed laser deposition on (100) LaAlO3 substrates. The resistivity plots and especially the thermoelectric power data confirm that codoping is not a simple sum of single element doping. However, the negative sign of the Seebeck coefficient indicates electron dominated transport independent of doping. The narrowing distinction among the effects of different doping methods combined with increasing resistivity of the films with improving crystalline quality of TiO2 suggest that structural defects play a critical role in the doping process. (C) 2013 AIP Publishing LLC.

引用

页数：4

共 23 条

[1] Visible-light photocatalysis in nitrogen-doped titanium oxides [J].

Asahi, R ;

Morikawa, T ;

Ohwaki, T ;

Aoki, K ;

Taga, Y .

SCIENCE, 2001, 293 (5528) :269-271

[2] Activation of high-Tc ferromagnetism in Co2+:TiO2 and Cr3+:TiO2 nanorods and nanocrystals by grain boundary defects [J].

Bryan, JD ;

Santangelo, SA ;

Keveren, SC ;

Gamelin, DR .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (44) :15568-15574

[3] THE ROLE OF METAL-ION DOPANTS IN QUANTUM-SIZED TIO2 - CORRELATION BETWEEN PHOTOREACTIVITY AND CHARGE-CARRIER RECOMBINATION DYNAMICS [J].

CHOI, WY ;

TERMIN, A ;

HOFFMANN, MR .

JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (51) :13669-13679

[4] Thermopower of single-crystal Nd-1-x(Sr,Pb)(x)MnO3-delta [J].

Crespi, VH ;

Lu, L ;

Jia, YX ;

Khazeni, K ;

Zettl, A ;

Cohen, ML .

PHYSICAL REVIEW B, 1996, 53 (21) :14303-14308

[5] Electron transport via polaron hopping in bulk TiO2:: A density functional theory characterization [J].

Deskins, N. Aaron ;

Dupuis, Michel .

PHYSICAL REVIEW B, 2007, 75 (19)

[6] HIGH-MOBILITY N-TYPE CHARGE-CARRIERS IN LARGE SINGLE-CRYSTALS OF ANATASE (TIO2) [J].

FORRO, L ;

CHAUVET, O ;

EMIN, D ;

ZUPPIROLI, L ;

BERGER, H ;

LEVY, F .

JOURNAL OF APPLIED PHYSICS, 1994, 75 (01) :633-635

[7] A transparent metal:: Nb-doped anatase TiO2 -: art. no. 252101 [J].

Furubayashi, Y ;

Hitosugi, T ;

Yamamoto, Y ;

Inaba, K ;

Kinoda, G ;

Hirose, Y ;

Shimada, T ;

Hasegawa, T .

APPLIED PHYSICS LETTERS, 2005, 86 (25) :1-3

[8] Design of Narrow-Gap TiO2: A Passivated Codoping Approach for Enhanced Photoelectrochemical Activity [J].

Gai, Yanqin ;

Li, Jingbo ;

Li, Shu-Shen ;

Xia, Jian-Bai ;

Wei, Su-Huai .

PHYSICAL REVIEW LETTERS, 2009, 102 (03)

[9] Thermoelectric property studies on bulk TiOx with x from 1 to 2 [J].

He, Qinyu ;

Hao, Qing ;

Chen, Gang ;

Poudel, Bed ;

Wang, Xiaowei ;

Wang, Dezhi ;

Ren, Zhifeng .

APPLIED PHYSICS LETTERS, 2007, 91 (05)

[10] Low temperature resistivity, thermoelectricity, and power factor of Nb doped anatase TiO2 [J].

Jacimovic, J. ;

Gaal, R. ;

Magrez, A. ;

Piatek, J. ;

Forro, L. ;

Nakao, S. ;

Hirose, Y. ;

Hasegawa, T. .

APPLIED PHYSICS LETTERS, 2013, 102 (01)

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