Structural Properties of Nanocrystalline PbS Thin Films Prepared by Chemical Bath Deposition Method

2011 ◽  
Vol 364 ◽  
pp. 60-64 ◽  
Author(s):  
A.S. Obaid ◽  
M.A. Mahdi ◽  
Asmiet Ramizy ◽  
Z. Hassan

Nanocrystalline PbS thin films were prepared using chemical bath deposition method on glass substrates, together with lead acetate as a source of lead ions (Pb2+) and thiourea as a source of sulfide ions (S2-) with different molar concentrations. The structural properties of thin films were studied using X-ray diffraction.The patterns showed a polycrystalline structure, and the preferred orientation changed along (111) and (200) planes .The grain size of the thin films varied from 27 to 41 nm. The crystallites were under strain, which varied between 0.054 and 0.3. Scanning electron microscope images showed that all the films have uniform surface morphology over the entire glass substrate and that the films were of good quality.

2013 ◽  
Vol 678 ◽  
pp. 207-211
Author(s):  
Jagadeesh Deenathayalan ◽  
Manickam Saroja ◽  
Muthusamy Venkatachalam ◽  
Periyasamy Gowthaman ◽  
N. Muthukumarasamy ◽  
...  

Abstract The Chemical bath deposition method was used for the preparation of ZnO nanorods and their optical and structural properties were studied. ZnO seed layer thin films were prepared by chemical bath deposition technique on to well cleaned glass substrates. ZnO seed-coated glass substrates were immersed in aqueous solution of zinc nitrate and hexamethylenetetramine (HMT) on 1:10 molar concentration at 90°C for 4 hours and annealed at different temperatures. The effect of annealing temperatures on the surface morphology and optical properties of the films was studied. The structure of the ZnO nano rod was studied by X-ray diffractometer and scanning electron microscopy. The optical property was studied by UV-Vis spectroscopy and photoluminescence spectroscopy. Experimental results have shown that prepared ZnO nanorods by this method have higher photoluminescence


RSC Advances ◽  
2020 ◽  
Vol 10 (24) ◽  
pp. 14458-14470 ◽  
Author(s):  
Ashour M. Ahmed ◽  
Mohamed Rabia ◽  
Mohamed Shaban

Nanocrystalline undoped and Cr-doped PbS thin films were prepared on glass substrates by a simple chemical bath deposition method as photoelectrodes for solar water splitting.


2001 ◽  
Vol 15 (17n19) ◽  
pp. 630-633 ◽  
Author(s):  
S. AMADOR-GRAJEDA ◽  
E. GOMEZ ◽  
M. E. HERNANDEZ-TORRES ◽  
J. M. GRACIA-JIMENEZ ◽  
R. SILVA-GONZALEZ

In this work we report results of the characterization of morphology, elemental composition and photoconductivity of an available set of CdSe thin films grown on glass substrates by the chemical bath deposition method.


2010 ◽  
Vol 29 (1) ◽  
pp. 97 ◽  
Author(s):  
Anuar Kassim ◽  
Tan Wee Tee ◽  
Abdul Halim Abdullah ◽  
Saravanan Nagalingam ◽  
Ho Soon Min

A low cost chemical bath deposition method has been used for the preparation of Cu4SnS4 thin films onto indium tin oxide glass substrate. The deposition parameters such as bath temperature (50 °C), deposition time (120 min), electrolyte concentration (0.05 M) and bath pH (1.5) were optimized to obtain good quality thin films. The structural, surface morphological and optical properties of thin films were studied by X-ray diffraction, an atomic force microscopy and an UV-Vis Spectrophotometer, respectively. The X-ray diffraction study revealed that the Cu4SnS4 films were polycrystalline in nature with the preferential orientation along the (221) plane. The atomic force microscopy results indicated that the films were smooth, uniform and the substrate surface was covered completely at these experimental conditions. These films exhibited p-type semiconductor behavior with the band gap energy about 1.57 eV.


2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Temesgen Geremew ◽  
Tizazu Abza

ZnS/glass and CdS/glass single layers and ZnS/CdS and CdS/ZnS heterojunction thin films were deposited by the chemical bath deposition method using zinc acetate and cadmium acetate as the metal ion sources and thioacetamide as a nonmetallic ion source in acidic medium. Na2EDTA was used as a complexing agent to control the free cation concentration. The single layer and heterojunction thin films were characterized with X-ray diffraction (XRD), a scanning electron microscope (SEM), energy dispersive X-ray (EDX), and a UV-VIS spectrometer. The XRD patterns of the CdS/glass thin film deposited on the soda lime glass substrate crystalized in the cubic structure with a single peak along the (111) plane. The ZnS/CdS heterojunction and ZnS/glass single layer thin films were crystalized in the hexagonal ZnS structure. The CdS/ZnS heterojunction thin film is nearly amorphous. The optical analysis results confirmed single band gap values of 2.75 eV and 2.5 eV for ZnS/CdS and CdS/ZnS heterojunction thin films, respectively. The CdS/glass and CdS/ZnS thin films have more imaginary dielectric components than the real part. The optical conductivity of the single layer and heterojunction films is in the order of 10 15 1/s. The optical study also confirmed refractive index values between 2 and 2.7 for ZnS/glass, ZnS/CdS, and CdS/ZnS thin films for incident photon energies between 1.2 eV and 3.8 eV. The surface morphology studies revealed compacted spherical grains covering the substrate surfaces with few cracks on ZnS/glass, ZnS/CdS, and CdS/glass and voids on CdS/ZnS thin films. The EDX result confirmed nearly 1 : 1 metallic to nonmetallic ion ratio in the single-layered thin films and the dominance of Zn ion over Cd ion in both ZnS/CdS and CdS/ZnS heterojunction thin films.


2015 ◽  
Vol 2 (2) ◽  
pp. 79-81
Author(s):  
Thambidurai.S ◽  
Kannan.P

CdS thin films were prepared by chemical bath deposition method on glass substrate, Bath temperature range of 800C. Steps using aqueous solution of cadmium sulphate and thiourea salts were used as cadmium Cd+2 and sulfur S-2 ions sources to prepare CdS thin films. Structural characterization was carried out by X-ray diffraction and optical transmission was carried out by UV-Vis spectrometer. Photoluminescence spectra were recorded in the in the range of 300 – 900 nm at the temperature range of 10 K


2019 ◽  
Vol 24 (2) ◽  
pp. 79
Author(s):  
Niran F. Abdul-Jabbar1 ◽  
Raid A. Ismail2 ◽  
Mustafa W. Fatehi1

In this study we used chemical bath deposition method for deposited Sb2S3 thin films on glass substrate. The study analyzed the optical properties and structural characterization of Sb2S3 thin films. The structural properties were studied on the thin films by x-ray diffraction (XRD), Scanning electron microscope (SEM), Energy dispersive X ray Analysis (EDAX). The XRD pattern showed that the thin films were polycrystalline, and EDAX showed that the constituents of the element were found to be chemically balanced and convergent peak (ie, verification chemical balance of phase Sb2S3).The optical properties showed that the optical energy gap at 40°C is 2.8  eV ,and at 50 °C is 2.6 eV , and the optical transmittance at 40°C is %80,and at 50°C is reached about %60.    http://dx.doi.org/10.25130/tjps.24.2019.035


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