Controlled growth of CdTe films by periodic voltammetry for solar cell applications

被引：23

作者：

Datta, J. ^{[1
]}

Jana, A. ^{[1
]}

Bhattacharya, C. ^{[1
]}

Bandyopadhyay, S. ^{[2
]}

机构：

[1] Bengal Engn & Sci Univ, Dept Chem, Shibpur Howrah 711103, W Bengal, India

[2] Univ New S Wales, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia

来源：

ELECTROCHIMICA ACTA | 2009年 / 54卷 / 23期

关键词：

n-CdTe; Periodic cyclic voltammetry; Electron microscopy; Anodic stripping voltammetry; Photoelectrochemical cell; THIN-FILMS; ELECTRODEPOSITION; NUCLEATION; DEPOSITION; CORROSION; CDSE; IONS;

D O I：

10.1016/j.electacta.2009.04.046

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In the present investigation, polycrystalline n-CdTe films have been synthesized on SnO(2)-coated glass substrate employing voltammetric technique under periodic cycles. Optical properties of the CdTe films were investigated and the band gap energy was found to lie within the range of 1.32-1.40 eV depending on the composition of the film matrix, as obtained by EDAX analysis. The films were subjected to SEM and AFM analyses in order to study the surface morphology, topographic structure of the semiconductor surface. X-ray diffraction studies indicated polycrystalline nature of deposits containing hexagonal and cubic phases of CdTe. The stability of the films was determined through anodic polarization studies using Tafel analysis. The amount of Cd(2+) dissolved during polarization was estimated by anodic stripping voltammetry. The Nyquist and Mott-Schottky plots derived from impedance spectroscopic measurements provided important information regarding electrical and semiconducting properties of the films. Cyclic voltammetry was found to be an effective method for developing potential thin films of CdTe, demonstrating photo-conversion efficiency up to the order of similar to 4%. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：5470 / 5478

页数：9

共 29 条

[1]

[Anonymous], 1998, Handbook of Chemistry and Physics

[2]

[Anonymous], 1999, AUTOLAB INSTR MAN

[3] Effect of chloride ions on electrodeposition of CdTe from ammoniacal basic electrolytes [J].

Arai, K ;

Murase, K ;

Hirato, T ;

Awakura, Y .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2006, 153 (02) :C121-C126

[4]

Bard A.J., 2006, ELECTROCHEMICAL METH

[5] Studies on anodic corrosion of the electroplated CdSe in aqueous and non-aqueous media for photoelectrochemical cells and characterization of the electrode/electrolyte interface [J].

Bhattacharya, C ;

Datta, J .

MATERIALS CHEMISTRY AND PHYSICS, 2005, 89 (01) :170-175

[6] Synthesis of nanostructured Cd-Se-Te films through periodic voltammetry for photoelectrochemical applications [J].

Bhattacharya, Chinmoy ;

Datta, Jayati .

JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 2007, 11 (02) :215-222

[7]

Bockris J. M., 1970, MODERN ELECTROCHEMIS

[8] THIN-FILM II-VI PHOTOVOLTAICS [J].

CHU, TL ;

CHU, SS .

SOLID-STATE ELECTRONICS, 1995, 38 (03) :533-549

[9] Role of Cl- and NO3- ions on the corrosion behavior of 20% SiCp reinforced 6061-Al metal matrix composite: A correlation between electrochemical studies and atomic force microscopy [J].

Datta, J. ;

Samanta, B. ;

Jana, A. ;

Sinha, S. ;

Bhattacharya, C. ;

Bandyopadhyay, S. .

CORROSION SCIENCE, 2008, 50 (09) :2658-2668

[10] Cathodic deposition of CdSe films from dimethyl formamide solution at optimized temperature [J].

Datta, J. ;

Bhattacharya, C. ;

Bandyopadhyay, S. .

APPLIED SURFACE SCIENCE, 2006, 253 (04) :2289-2295

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