Synthesis of cobalt oxide interconnected flacks and nano-worms structures using low temperature chemical bath deposition

被引：51

作者：

Kandalkar, S. G. ^{[2
]}

Gunjakar, J. L. ^{[2
]}

Lokhande, C. D. ^{[1
]}

Joo, Oh-Shim ^{[1
]}

机构：

[1] Korea Inst Sci & Technol, Clean Energy Res Ctr, Seoul 130650, South Korea

[2] Shivaji Univ, Dept Phys, Thin Film Phys Lab, Kolhapur 416004, MS, India

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 478卷 / 1-2期

关键词：

Cobalt oxide; Thin films; Chemical deposition; Nanostructure; THIN-FILMS; SUBSTRATE; SUPERCAPACITOR; MORPHOLOGY;

D O I：

10.1016/j.jallcom.2008.11.095

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：

Interconnected flacks and nano-worms structures of cobalt oxide on glass and copper substrates have been deposited using chemical bath deposition method from aqueous alkaline cobalt chloride (CoCl2 center dot 6H(2)O) solution. The cobalt oxide films were examined with X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), optical absorption and electrical resistivity techniques. The structural analyses showed that as-deposited amorphous CoO(OH) films converted into crystalline Spinel Co3O4 after annealing. Nanocrystalline grains with some overgrown clusters of cobalt oxide were revealed from surface morphological studies. TEM study showed the formation of nanocrystals with a diameter ranging from 5 to 10 nm. From optical studies, band gap of 2.4 eV was estimated for cobalt oxide thin film. The electrical resistivity exhibited semiconducting behavior of cobalt oxide thin film. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：594 / 598

页数：5

共 33 条

[1]

Andricacos P. C., 1999, Electrochemical Society Interface, V8, P32

[2]

[Anonymous], 1991, INFRARED SPECTRA INO

[3] OPTICAL ABSORPTION OF SMALL POLARONS IN SEMICONDUCTING NIO AND COO IN NEAR AND FAR INFRA-RED [J].

AUSTIN, IG ;

CLAY, BD ;

TURNER, CE .

JOURNAL OF PHYSICS PART C SOLID STATE PHYSICS, 1968, 1 (05) :1418-&

[4] Characterization and tests of planar Co3O4 model catalysts prepared by chemical vapor deposition [J].

Bahlawane, N ;

Rivera, EF ;

Kohse-Höinghaus, K ;

Brechling, A ;

Kleineberg, U .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2004, 53 (04) :245-255

[5] Ellipsometric spectroscopy study of cobalt oxide thin films deposited by sol-gel [J].

Barrera-Calva, E. ;

Martinez-Flores, J. C. ;

Huerta, L. ;

Avila, A. ;

Ortega-Lopez, M. .

SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2006, 90 (15) :2523-2531

[6] SnO2 substrate effects on the morphology and composition of chemical bath deposited ZnSe thin films [J].

Chaparro, AM ;

Martínez, MA ;

Guillén, C ;

Bayón, R ;

Gutiérrez, MT ;

Herrero, J .

THIN SOLID FILMS, 2000, 361 :177-182

[7] Substrate effect on the temperature coefficient of resistance of La0.7Ca0.3MnO3 thin films prepared by metal organic deposition [J].

Daoudi, K. ;

Tsuchiya, T. ;

Yamaguchi, I. ;

Manabe, T. ;

Mizuta, S. ;

Kumagai, T. .

JOURNAL OF ELECTROCERAMICS, 2006, 16 (04) :527-532

[8] Cobalt hexafluoroacetylacetonate polyether adducts for thin films of cobalt oxides [J].

Gulino, A ;

Fragalà, I .

INORGANICA CHIMICA ACTA, 2005, 358 (15) :4466-4472

[9] Synthesis of nanocrystalline nickel ferrite (NiFe2O4) thin films using low temperature modified chemical method [J].

Gunjakar, J. L. ;

More, A. M. ;

Shinde, V. R. ;

Lokhande, C. D. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2008, 465 (1-2) :468-473

[10] Preparation of cobalt oxide thin films and its use in supercapacitor application [J].

Kandalkar, S. G. ;

Gunjakar, J. L. ;

Lokhande, C. D. .

APPLIED SURFACE SCIENCE, 2008, 254 (17) :5540-5544

← 1 2 3 4 →