Growth and Characterization of Tin Sulphide Nanostructured Thin Film by Chemical Bath Deposition for Near-Infrared Photodetector Application

2019 ◽  
Vol 290 ◽  
pp. 220-224 ◽  
Author(s):  
Mohamed S. Mahdi ◽  
Kamarulazizi Ibrahim ◽  
Naser Mahmoud Ahmed ◽  
Arshad Hmood ◽  
Shrook A. Azzez
Keyword(s):  
Thin Film ◽  
Chemical Bath Deposition ◽  
Near Infrared ◽  
Morphological Characteristics ◽  
Trisodium Citrate ◽  
Light Illumination ◽  
X Ray Diffraction ◽  
Nanostructured Thin Film ◽  
Complex Agent ◽  
Metal Semiconductor Metal

This study involves synthesizing of nanostructured tin sulphide (SnS) thin film on a glass substrate by chemical bath deposition technique. SnS film was prepared using non-toxic trisodium citrate (TSC) as a complex agent. The structural and morphological characteristics of the film were characterized by using X-ray diffraction (XRD), optical field emission scanning electron microscopy (FESEM). The XRD pattern confirmed an orthorhombic structure. The FESEM image revealed nanoflakes of the as-prepared SnS thin film. Moreover, near-infrared (NIR) metal semiconductor metal photodetector, which exhibited good photoresponse characteristics under (750 nm) light illumination was fabricated. The photoresponse characteristics also were investigated at different illumination power densities. The photodetector revealed excellent reproducibility and stability characteristics.

Characterization of MnS Thin Films Deposited by Chemical Bath Deposition

2019 ◽  
Vol 969 ◽  
pp. 433-438 ◽  
Author(s):  
Dattatraya K. Sonavane ◽  
S.K. Jare ◽  
M.A. Shaikh ◽  
R.V. Kathare ◽  
R.N. Bulakhe
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Band Gap ◽  
Chemical Bath Deposition ◽  
Band Gap Energy ◽  
Sulfur Source ◽  
X Ray Diffraction ◽  
Glass Substrates ◽  
Double Beam

Glass substrates are used to deposit thin films utilizing basic and value effective chemical bath deposition (CBD) technique. The films were prepared from the mixture as solutions of manganous acetate tetrahydrate [C4H6MnO44H2O] as a manganese source, thiourea [(H2 N) 2 CS] as a sulfur source and triethanolamine (TEA) [(HOC2H4)3N] as a complexing agent.In the present paper the deposition was successfully done at 60 °C temperature. The absorption properties and band gap energy were determined employing double beam spectrophotometer. The optical band gap value calculated from absorption spectra of MnS thin film is found to be about 3.1eV.The MnS thin film was structurally characterized by X-ray Diffraction (XRD). The MnS thin film was morphologically characterized by Scanning Electron Microscopy (SEM) and elemental analysis was performed using EDS to confirm the formation of MnS.

A highly sensitive flexible SnS thin film photodetector in the ultraviolet to near infrared prepared by chemical bath deposition

RSC Advances ◽  
2016 ◽  
Vol 6 (116) ◽  
pp. 114980-114988 ◽  
Author(s):  
Mohamed S. Mahdi ◽  
K. Ibrahim ◽  
A. Hmood ◽  
Naser M. Ahmed ◽  
Shrook A. Azzez ◽  
...  
Keyword(s):  
Thin Film ◽  
Response Time ◽  
Chemical Bath Deposition ◽  
Near Infrared ◽  
Broad Band ◽  
Fast Response ◽  
Industrial Applications ◽  
Fast Response Time ◽  
Highly Sensitive ◽  
High Photosensitivity

A novel flexible broad band UV-vis-NIR SnS photodetector with high photosensitivity and fast response time for scientific and industrial applications.

scholarly journals Fabrication of a UV Photodetector Based on n-TiO2/p-CuMnO2 Heterostructures

Coatings ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1380
Author(s):  
Mircea Nicolaescu ◽  
Cornelia Bandas ◽  
Corina Orha ◽  
Viorel Şerban ◽  
Carmen Lazău ◽  
...  
Keyword(s):  
Thin Film ◽  
High Performance ◽  
Morphological Characteristics ◽  
Thin Film Deposition ◽  
Film Deposition ◽  
Synthesis Process ◽  
Second Step ◽  
X Ray Diffraction ◽  
Uv Photodetector ◽  
X Ray

The heterojunction based on n-TiO2 nanolayer/p-CuMnO2 thin film was achieved using an efficient two-step synthesis process for the fabrication of a UV photodetector. The first step consisted of obtaining the TiO2 nanolayer, which was grown on titan foil by thermal oxidation (Ti-TiO2). The second step consisted of CuMnO2 thin film deposition onto the surface of Ti-TiO2 using the Doctor Blade method. Techniques such as X-ray diffraction, UV-VIS analysis, SEM, and AFM morphologies were used for the investigation of the structural and morphological characteristics of the as-synthesized heterostructures. The Mott–Schottky analysis was performed in order to prove the n-TiO2/p-CuMnO2 junction. The I-V measurements of the n-TiO2 nanolayer/p-CuMnO2 thin film heterostructure confirm its diode characteristics under dark state, UV and visible illumination conditions. The obtained heterojunction, which is based on two types of semiconductors with different energy band structures, improves the separating results of charges, which is very important for high-performance UV photodetectors.

scholarly journals Performance Improvement of UV Photodetectors using Cd-doped ZnO Nanostructures

2021 ◽  
Author(s):  
Fatemeh Abbasi ◽  
Fahimeh Zahedi ◽  
Mohammad hasan Yousefi
Keyword(s):  
Morphological Characteristics ◽  
Hexagonal Wurtzite Structure ◽  
X Ray Diffraction ◽  
Uv Photodetector ◽  
Pure Zinc ◽  
Current Time ◽  
X Ray ◽  
Metal Semiconductor Metal ◽  
Current Voltage ◽  
Doped Zno

Abstract The present research performed thermal decomposition to synthesize pure zinc oxide (ZnO) and cadmium-doped ZnO (ZnO:Cd) nanorods with ZnO to Cd weight ratios of 93:7, 95:5 and 97:3. Field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD) and photoluminescence (PL) spectroscopy were performed and current/voltage and current/time measured to determine the optical, structural and morphological characteristics of ZnO and ZnO:Cd. The XRD results suggested the hexagonal wurtzite structure of all the samples and the successful incorporation of Cd into the ZnO structures. This incorporation caused a spherical to rod-like change in the shape of the nanostructures. An intense and sharp peak was observed at 380 nm (3.26 eV) in the UV region of the PL spectra of all the samples. A UV photodetector fabricated on the basis of ZnO and ZnO:Cd nanorods with a metal-semiconductor-metal configuration showed the significant photocurrent and photosensitivity of the ZnO:Cd samples in the UV photodetection application. The sensitivity of the fabricated ZnO photodetectors with Cd percentages of 0, 3, 5 and 7% was respectively obtained as 110.62, 463.28, 762.40 and 920.30. The fastest photoresponse, with a rise and decay time of 2.5 and 4 s, respectively, was associated with the sample doped with 5% Cd.

scholarly journals Structural, Optical and Electrical Analysis of Pentacene Thin Film

2019 ◽  
Vol 9 (1S6) ◽  
pp. 38-42
Keyword(s):  
Thin Film ◽  
Forward Bias ◽  
Impedance Measurement ◽  
Electrical Characteristics ◽  
X Ray Diffraction ◽  
X Ray ◽  
Reflection And Refraction ◽  
Metal Semiconductor Metal ◽  
Parallel Circuit ◽  
Msm Device

The significant electrical characteristics of pentacene thin film was studied by fabricating silver-pentacene-aluminium sand witch device. This metal-semiconductor-metal (MSM) device can act as the diode . When investigating, it is found that the diode can act as an equivalent plate capacitor as reverse bias mode exclusive of current flow. In forward bias mode, studied diode as an equivalent circuit with a parallel circuit of resistance –capacitance. This paper describes analysis of capacitance by measuring I-V characteristics and impedance measurement. The free samples of pentacene are also analysed using field emission scanning electron microscope (FESEM) and X-ray diffraction micrographs (XRD) . The X-ray diffraction micrograph shows the configuration of pentacene in the (-1 0 2) plane as the strongest orientation .The particle size are analysed using FESEM. The optical characteristics are analysed using UV spectrometer. The spectra of absorption, reflection and refraction are studied well

scholarly journals Study of Metal–Semiconductor–Metal CH3NH3PbBr3 Perovskite Photodetectors Prepared by Inverse Temperature Crystallization Method

Sensors ◽  
2020 ◽  
Vol 20 (1) ◽  
pp. 297 ◽  
Author(s):  
Lung-Chien Chen ◽  
Kuan-Lin Lee ◽  
Kun-Yi Lee ◽  
Yi-Wen Huang ◽  
Ray-Ming Lin
Keyword(s):  
Morphological Characteristics ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Inverse Temperature ◽  
X Ray Diffraction ◽  
Large Area ◽  
Perovskite Materials ◽  
Metal Semiconductor Metal ◽  
Wide Range ◽  
Temperature Crystallization

Numerous studies have addressed the use of perovskite materials for fabricating a wide range of optoelectronic devices. This study employs the deposition of an electron transport layer of C60 and an Ag electrode on CH3NH3PbBr3 perovskite crystals to complete a photodetector structure, which exhibits a metal–semiconductor–metal (MSM) type structure. First, CH3NH3PbBr3 perovskite crystals were grown by inverse temperature crystallization (ITC) in a pre-heated circulator oven. This oven was able to supply uniform heat for facilitating the growth of high-quality and large-area crystals. Second, the different growth temperatures for CH3NH3PbBr3 perovskite crystals were investigated. The electrical, optical, and morphological characteristics of the perovskite crystals were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), ultraviolet-visible spectroscopy, and photoluminescence (PL). Finally, the CH3NH3PbBr3 perovskite crystals were observed to form a contact with the Ag/C60 as the photodetector, which revealed a responsivity of 24.5 A/W.

scholarly journals Fabrication of Cu2O Nanostructured Thin Film by Anodizing

2018 ◽  
Vol 36 (2) ◽  
pp. 209-216 ◽  
Author(s):  
C.H. Voon ◽  
B.Y. Lim ◽  
S.C.B. Gopinath ◽  
Y. Al-Douri ◽  
K.L. Foo ◽  
...  
Keyword(s):  
Thin Film ◽  
Visible Region ◽  
X Ray Diffraction ◽  
Nanostructured Thin Film ◽  
Narrow Bandgap ◽  
Type Semiconductor ◽  
High Absorption Coefficient ◽  
P Type ◽  
O Phase ◽  
High Absorption

Abstract Cuprous oxide, a narrow bandgap p-type semiconductor, has been known as a potential material for applications in supercapacitors, hydrogen production, sensors, and energy conversion due to its properties such as non-toxicity, easy availability, cost effectiveness, high absorption coefficient in the visible region and large minority carriers diffusion length. In this study, Cu2O nanostructured thin film was fabricated by anodizing of Cu plates in ethylene glycol containing 0.15 M KOH, 0.1 M NH4F and 3 wt.% deionized water. The effects of anodizing voltage and temperature of electrolyte were investigated and reported. It was found that nanoporous Cu2O thin film was formed when anodizing voltages of 50 V and 70 V were used while a dense Cu2O thin film was formed due to the aggregation of smaller nanoparticles when 30 V anodizing voltage was used. Nanoplatelets thin film was formed when the temperature of electrolyte was reduced to 15 °C and 5 °C. X-ray diffraction confirmed the presence of Cu2O phase in thin film formed during anodizing of Cu plates, regardless of the anodizing voltage and temperature of electrolyte. Photoluminescence spectroscopy showed the presence of Cu2O peak at 630 nm corresponding to band gap of 1.97 eV. A mechanism of the formation of Cu2O thin film was proposed. This study reported the ease of tailoring Cu2O nanostructures of different morphologies using anodizing that may help widen the applications of this material

Synthesis and Characterization of TiO2 Nanoparticles via Chemical Bath Deposition (CBD) Method

2010 ◽  
Vol 11 ◽  
pp. 35-38 ◽  
Author(s):  
Ali Shokuhfar ◽  
Amir Hassanjani-Roshan ◽  
Mohammad Reza Vaezi ◽  
S.M. Kazemzadeh ◽  
A. Esmaielzadeh Kandjani ◽  
...  
Keyword(s):  
Chemical Bath Deposition ◽  
Morphological Characteristics ◽  
Spherical Shape ◽  
The Other ◽  
X Ray Diffraction ◽  
Production Methods ◽  
Transmission Electron ◽  
Processing Cost ◽  
Cbd Method

Nowadays, different production methods of nanoparticles have been developed. Among novel wet-chemical processes, the Chemical Bath Deposition (CBD) method is used to synthesize nanoparticles more easily than the other method. In this investigation, titanium dioxide (TiO2) nanoparticles were synthesized by the Chemical Bath Deposition (CBD) method. Tetraisopropyl titanate (C12H28O4Ti), sodium hydroxide (NaOH) and ethanol were used as initial materials. Appropriate solvents were used for preparation of samples. CBD process was carried out at 50°C for 90 min and the obtained materials washed and then dried at room temperature for 48 hrs. For determining particle size and evaluation of morphological characteristics, X-ray diffraction (XRD) and transmission electron microscopy (TEM) were used. The TEM observation indicated that the average particles size of powder is about 10-30 nm and the shape of product is semi-spherical shape. The final results present that the CBD method is more suitable than the other process because of it showing a low processing cost and fine powders.

Sign in / Sign up

Export Citation Format

Share Document