A highly sensitive UV sensor composed of 2D NiO nanosheets and 1D ZnO nanorods fabricated by a hydrothermal process

被引：22

作者：

Le Thuy Hoa ^{[1
]}

Huynh Ngoc Tien ^{[1
]}

Hur, Seung Hyun ^{[1
]}

机构：

[1] Univ Ulsan, Sch Chem Engn, Ulsan 680749, South Korea

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2014年 / 207卷

基金：

新加坡国家研究基金会;

关键词：

NiO nanosheets; ZnO nanorods; UV sensor; THIN-FILMS; SENSING CHARACTERISTICS; HETEROJUNCTIONS; LUMINESCENCE; ELECTRODES; NANOWIRES;

D O I：

10.1016/j.sna.2013.12.017

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A highly sensitive UV sensor was fabricated using a low-cost, low temperature, and scalable solution-based process. The p-n heterojunction sensor composed of p-type two dimensional (2D) NiO nanosheets (NS) and n-type one dimensional (1D) ZnO nanorods (NRs) exhibited a highly increased UV response compared to 2D NiO NS or 1D ZnO NR alone. Photoluminescence (PL) spectra revealed a decrease of the trap-state emission and recombination of excitons in the NiO NS/ZnO NR structure, which could be responsible for the enhanced UV response. (C) 2013 Elsevier B.V. All rights reserved.

引用

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页码：20 / 24

页数：5

相关论文

共 25 条

[1] Electronic structure of nanostructured nickel oxide using Ni 2p XPS analysis [J].

Biju, V ;

Khadar, MA .

JOURNAL OF NANOPARTICLE RESEARCH, 2002, 4 (03) :247-253

[2] Characterization of sol-gel-derived NiOx xerogels as supercapacitors [J].

Cheng, Jie ;

Cao, Gao-Ping ;

Yang, Yu-Sheng .

JOURNAL OF POWER SOURCES, 2006, 159 (01) :734-741

[3] A Simple Two-Step Electrodeposition of Cu2O/ZnO Nanopillar Solar Cells [J].

Cui, Jingbiao ;

Gibson, Ursula J. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (14) :6408-6412

[4] X-ray photoelectron spectroscopy measurement of n-ZnO/p-NiO heterostructure valence-band offset [J].

Deng, R. ;

Yao, B. ;

Li, Y. F. ;

Zhao, Y. M. ;

Li, B. H. ;

Shan, C. X. ;

Zhang, Z. Z. ;

Zhao, D. X. ;

Zhang, J. Y. ;

Shen, D. Z. ;

Fan, X. W. .

APPLIED PHYSICS LETTERS, 2009, 94 (02)

[5] NiO thin-film formaldehyde gas sensor [J].

Dirksen, JA ;

Duval, K ;

Ring, TA .

SENSORS AND ACTUATORS B-CHEMICAL, 2001, 80 (02) :106-115

[6] Sensing characteristics of NiO thin films as NO2 gas sensor [J].

Hotovy, I ;

Rehacek, V ;

Siciliano, P ;

Capone, S ;

Spiess, L .

THIN SOLID FILMS, 2002, 418 (01) :9-15

[7] Origin of defect emission identified by polarized luminescence from aligned ZnO nanorods [J].

Hsu, NE ;

Hung, WK ;

Chen, YF .

JOURNAL OF APPLIED PHYSICS, 2004, 96 (08) :4671-4673

[8] Comparative study on the growth characteristics of ZnO nanowires and thin films by metalorganic chemical vapor deposition (MOCVD) [J].

Jeong, MC ;

Oh, BY ;

Lee, W ;

Myoung, JM .

JOURNAL OF CRYSTAL GROWTH, 2004, 268 (1-2) :149-154

[9] Optical and structural properties of GaN nanopillar and nanostripe arrays with embedded InGaN/GaN multi-quantum wells [J].

Keller, S. ;

Schaake, C. ;

Fichtenbaum, N. A. ;

Neufeld, C. J. ;

Wu, Y. ;

McGroddy, K. ;

David, A. ;

DenBaars, S. P. ;

Weisbuch, C. ;

Speck, J. S. ;

Mishra, U. K. .

JOURNAL OF APPLIED PHYSICS, 2006, 100 (05)

[10] LUMINESCENCE OF ZNO UNDER HIGH ONE-QUANTUM AND 2-QUANTUM EXCITATION [J].

KLINGSHIRN, C .

PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1975, 71 (02) :547-556