Synthesis and characterization of silver diethyldithiocarbamate cluster for the deposition of acanthite (Ag2S) thin films for photoelectrochemical applications

被引：32

作者：

Ehsan, Muhammad Ali ^{[1
]}

Khaledi, Hamid ^{[1
]}

Tahir, Asif Ali ^{[3
]}

Ming, Huang Nay ^{[2
]}

Wijayantha, K. G. Upul ^{[3
]}

Mazhar, Muhammad ^{[1
]}

机构：

[1] Univ Malaya, Fac Sci, Dept Chem, Kuala Lumpur 50603, Malaysia

[2] Univ Malaya, Fac Sci, Dept Phys, Kuala Lumpur 50603, Malaysia

[3] Univ Loughborough, Dept Chem, Loughborough LE11 3TU, Leics, England

来源：

THIN SOLID FILMS | 2013年 / 536卷

基金：

英国工程与自然科学研究理事会;

关键词：

Silver dithiocarbamate; Single source precursor; Acanthite; Thin films; Aerosol-assisted chemical vapor deposition; Optical band gap; Photoelectrochemical cells; SULFIDE; COMPLEXES; NANOPARTICLES; NANOCRYSTALS; CONVERSION; PRECURSOR; NANOTUBE; TIO2;

D O I：

10.1016/j.tsf.2013.03.092

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Acanthite (Ag2S) thin filmswere fabricated on fluorine doped tin oxide coated conducting glass substrates by aerosol assisted chemical vapor deposition (AACVD) using silver cluster [Ag-4{S2CN(C2H5)(2)}(3)(C5H5N)(2)](n) center dot nNO(3) center dot 2nH(2)O (1) [where (S2CN(C2H5)(2)) = diethyldithiocarbamate, C5H5N = pyridine] as a single source precursor. Cluster (1) was synthesized by the reaction of sodium diethyldithiocarbamate with silver nitrate in a mixture of acetone and pyridine. (1) was analyzed by melting point, elemental analysis, Fourier transform infrared spectroscopy, proton nuclear magnetic resonance spectroscopy, thermogravimetry and single crystal X-ray studies. Single crystal X-ray studies showed that (1) crystallizes in the triclinic crystal system with a = 11.4372(3), b = 11.6768(3), and c = 16.3672(4) angstrom and alpha = 105.817(3), beta = 97.891(3), and gamma = 93.274(3)degrees in the space group P-1. Thermogravimetric analysis revealed that (1) undergoes facile thermal decomposition at 400 degrees C to give a stable residual mass consistent with the formation of Ag2S. Thin films grown from a 0.02 M solution of (1) in pyridine at 350 and 400 degrees C using AACVD techniquewere characterized by powder X-ray diffraction, field emission scanning electron microscopy (FESEM), energy dispersive X-ray and ultraviolet-visible spectrophotometry. FESEM images of the films exhibited well-defined nanorods with length > 1000 nm and diameter 100-150 nm grown without any cracks, fractures or directional preference. A band gap of 1.05 eV was estimated by extrapolating the linear part of a Tauc plot recorded for the films. The photoelectrochemical (PEC) characteristics recorded under Air Mass 1.5 illumination indicated a photocurrent density of 220 mu A cm(-2) at 0.0 V vs Ag/ AgCl/3 M KCl. The optical and PEC characteristics of the deposited thin films proved their suitability for PEC applications. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：124 / 129

页数：6

共 48 条

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