scholarly journals ZnO Films Incorporation Study on Macroporous Silicon Structure

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3697
Author(s):  
Lizeth Martínez ◽  
Godofredo García-Salgado ◽  
Francisco Morales-Morales ◽  
Bernardo Campillo ◽  
Angélica G. Hernández ◽  
...  
Keyword(s):  
Sol Gel ◽  
Ultrasonic Spray Pyrolysis ◽  
Xrd Analysis ◽  
Hybrid Nanostructures ◽  
Root Mean Square Roughness ◽  
Zno Films ◽  
Silicon Substrates ◽  
Macroporous Silicon ◽  
Ultrasonic Spray ◽  
Order Of Magnitude

In the present work, we developed hybrid nanostructures based on ZnO films deposited on macroporous silicon substrates using the sol–gel spin coating and ultrasonic spray pyrolysis (USP) techniques. The changes in the growth of ZnO films on macroporous silicon were studied using a UV-visible spectrometer, an X-ray diffractometer (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM). XRD analysis revealed the beneficial influence of macroporous silicon on the structural properties of ZnO films. SEM micrographs showed the growth and coverage of ZnO granular and flake-like crystals inside the pores of the substrate. The root mean square roughness (RMS) measured by AFM in the ZnO grown on the macroporous silicon substrate was up to one order of magnitude higher than reference samples. These results prove that the methods used in this work are effective to cover porous and obtain nano-morphologies of ZnO. These morphologies could be useful for making highly sensitive gas sensors.

scholarly journals Synthesis of Silica Particles Using Ultrasonic Spray Pyrolysis Method

Metals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 463
Author(s):  
Srecko Stopic ◽  
Felix Wenz ◽  
Tatjana-Volkov Husovic ◽  
Bernd Friedrich
Keyword(s):  
Spray Pyrolysis ◽  
Sol Gel ◽  
Ultrasonic Spray Pyrolysis ◽  
Silica Particles ◽  
Cement Industry ◽  
Submicron Particles ◽  
Spherical Particles ◽  
Spray Pyrolysis Method ◽  
X Ray ◽  
Ultrasonic Spray

Silica has sparked strong interest in hydrometallurgy, catalysis, the cement industry, and paper coating. The synthesis of silica particles was performed at 900 °C using the ultrasonic spray pyrolysis (USP) method. Ideally, spherical particles are obtained in one horizontal reactor from an aerosol. The controlled synthesis of submicron particles of silica was reached by changing the concentration of precursor solution. The experimentally obtained particles were compared with theoretically calculated values of silica particles. The characterization was performed using a scanning electron microscope (SEM) and energy-dispersive X-ray spectroscopy (EDS). X-ray diffraction, frequently abbreviated as XRD, was used to analyze the structure of obtained materials. The obtained silica by ultrasonic spray pyrolysis had an amorphous structure. In comparison to other methods such as sol–gel, acidic treatment, thermal decomposition, stirred bead milling, and high-pressure carbonation, the advantage of the ultrasonic spray method for preparation of nanosized silica controlled morphology is the simplicity of setting up individual process segments and changing their configuration, one-step continuous synthesis, and the possibility of synthesizing nanoparticles from various precursors.

Enhanced p-Type ZnO Films through Nitrogen and Argentum Codoping Grown by Ultrasonic Spray Pyrolysis

2008 ◽  
Vol 25 (9) ◽  
pp. 3400-3402 ◽  
Author(s):  
Wang Jing-Wei ◽  
Bian Ji-Ming ◽  
Liang Hong-Wei ◽  
Sun Jing-Chang ◽  
Zhao Jian-Ze ◽  
...  
Keyword(s):  
Spray Pyrolysis ◽  
Ultrasonic Spray Pyrolysis ◽  
Zno Films ◽  
Ultrasonic Spray ◽  
P Type

scholarly journals Substrate Temperature Effect on Charge Transport Performance of ZnO Electron Transport Layer Prepared by a Facile Ultrasonic Spray Pyrolysis in Polymer Solar Cells

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Jiang Cheng ◽  
Rong Hu ◽  
Qi Wang ◽  
Chengxi Zhang ◽  
Zhou Xie ◽  
...  
Keyword(s):  
Solar Cells ◽  
Spray Pyrolysis ◽  
Polymer Solar Cells ◽  
Acid Methyl Ester ◽  
Ultrasonic Spray Pyrolysis ◽  
Ammonia Solution ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Zno Films ◽  
Ultrasonic Spray

A novel ultrasonic spray pyrolysis for high-quality ZnO films based on zinc-ammonia solution was achieved in air. To investigate the structural and optical properties as well as the performance of polymer solar cells (PSCs), ZnO films at different substrate temperatures and thicknesses were prepared. The performance of poly(3-hexylthiophene):[6,6]-phenyl C61-butyric acid methyl ester (P3HT:PCBM) based PSC was found to be improved due to the ZnO films. The crystal structure and roughness of the ZnO films fabricated at different temperatures were found to affect the performance of PSCs. The optimized power conversion efficiency was found to be maximum for PSCs with ZnO films prepared at 200°C. The growth process of these ZnO films is very simple, cost-effective, and compatible for larger-scale PSC preparation. The precursor used for spray pyrolysis is environmentally friendly and helps to achieve ZnO film preparation at a relative low temperature.

scholarly journals Nanorod Arrays Enhanced UV Light Response of Mg-Doped ZnO Films

Symmetry ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1005
Author(s):  
Der-Yuh Lin ◽  
Hone-Zern Chen ◽  
Ming-Cheng Kao ◽  
San-Lin Young ◽  
Wen-Yi Sung
Keyword(s):  
Uv Light ◽  
Sol Gel ◽  
Light Response ◽  
Band Gap Energy ◽  
Zno Films ◽  
Silicon Substrates ◽  
Nanorod Arrays ◽  
Nanocrystalline Films ◽  
Uv Illumination ◽  
Surface Morphologies

Zn1−xMgxO (x = 0, 0.03, 0.05, and 0.07) nanocrystalline films were grown on silicon substrates using the sol–gel method. Furthermore, Zn1−xMgxO vertically aligned hexagonal symmetrical nanorods with six reflection symmetries were fabricated on pure ZnO-seeded layer n-type silicon substrates via a low-temperature hydrothermal method to enhance the ultraviolet (UV) light response. The crystal microstructures and surface morphologies of nanocrystalline films and nanorod arrays were determined by X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM). Transmission spectra showed that the increasing Mg content will increase the band gap energy from 3.28 to 3.46 eV. However, the current–voltage curves in the dark and under UV illumination showed that the UV response did not improve by the incorporation of magnesium. We changed the flat surface of films into symmetrical nanorod arrays and demonstrated they can significantly enhance the normalized photo-to-dark-current ratio up to ten times.

Study on anomalous high p-type conductivity in ZnO films on silicon substrate prepared by ultrasonic spray pyrolysis

2007 ◽  
Vol 90 (6) ◽  
pp. 062118 ◽  
Author(s):  
Jun-Liang Zhao ◽  
Xiao-Min Li ◽  
André Krtschil ◽  
Alois Krost ◽  
Wei-Dong Yu ◽  
...  
Keyword(s):  
Spray Pyrolysis ◽  
Silicon Substrate ◽  
Ultrasonic Spray Pyrolysis ◽  
Zno Films ◽  
Type Conductivity ◽  
Ultrasonic Spray ◽  
P Type

Growth of thin ZnO films by ultrasonic spray pyrolysis

2010 ◽  
Vol 46 (2) ◽  
pp. 154-162 ◽  
Author(s):  
V. V. Kireev ◽  
L. N. Dem’yanets ◽  
L. E. Li ◽  
V. V. Artemov
Keyword(s):  
Spray Pyrolysis ◽  
Ultrasonic Spray Pyrolysis ◽  
Zno Films ◽  
Ultrasonic Spray

Influence of texture on the electrical properties of Al-doped ZnO films prepared by ultrasonic spray pyrolysis

2017 ◽  
Vol 29 (3) ◽  
pp. 2016-2025 ◽  
Author(s):  
J. A. Barón-Miranda ◽  
O. Calzadilla ◽  
S. San-Juan-Hernández ◽  
I. Diez-Pérez ◽  
J. Díaz ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Spray Pyrolysis ◽  
Ultrasonic Spray Pyrolysis ◽  
Zno Films ◽  
Ultrasonic Spray ◽  
Doped Zno

Nanostructured ZnO films with various morphologies prepared by ultrasonic spray pyrolysis and its growing process

2013 ◽  
Vol 283 ◽  
pp. 1006-1011 ◽  
Author(s):  
H.L. Ma ◽  
Z.W. Liu ◽  
D.C. Zeng ◽  
M.L. Zhong ◽  
H.Y. Yu ◽  
...  
Keyword(s):  
Spray Pyrolysis ◽  
Ultrasonic Spray Pyrolysis ◽  
Zno Films ◽  
Ultrasonic Spray

Effect of Cu/In Ratio on Properties of CuInS2 Films Prepared by Ultrasonic Spray Pyrolysis Method

2011 ◽  
Vol 199-200 ◽  
pp. 1936-1939
Author(s):  
Xiao Zhang ◽  
Hua Wang ◽  
Ji Wen Xu ◽  
Ling Yang ◽  
Ming Fang Ren
Keyword(s):  
Thin Films ◽  
Spray Pyrolysis ◽  
Ultrasonic Spray Pyrolysis ◽  
Xrd Analysis ◽  
Chalcopyrite Structure ◽  
Spray Pyrolysis Method ◽  
Visible Absorption ◽  
Ultrasonic Spray ◽  
Pyrolysis Method ◽  
Ultrasonic Spray Pyrolysis Method

CuInS2 thin films were prepared on heated glass substrates by ultrasonic spray pyrolysis method. Structure, surface morphology and properties of films with different Cu/In ratios have been investigated. X-ray diffraction (XRD) analysis demonstrated that as-prepared CuInS2 thin films with chalcopyrite structure have a preferential orientation along the (112) direction. SEM study shows films are relatively dense and smooth, but the much bigger grains and the large coherent agglomerates appear in films (Cu/In>1.25) due to the appearance of phase Cu2S. CuInS2 thin film (Cu/In=1.25) has a strong visible absorption and its energy band gap comes up to 1.45eV.

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