PLD Deposited ZnO Films on Different Substrates and Oxygen Pressure: A Study of Surface Morphology and Optical Properties

2012 ◽  
Vol 4 (3) ◽  
pp. 467-474 ◽  
Author(s):  
Jai Singh ◽  
P. K. Srivastava ◽  
P. K. Siwach ◽  
H. K. Singh ◽  
R. S. Tiwari ◽  
...  
Keyword(s):  
Optical Properties ◽  
Surface Morphology ◽  
Oxygen Pressure ◽  
Zno Films

Enhancement of surface morphology and optical properties of nanocolumnar ZnO films

2007 ◽  
Vol 42 (1-6) ◽  
pp. 461-467 ◽  
Author(s):  
V. Donderis ◽  
M.A. Hernández-Fenollosa ◽  
L.C. Damonte ◽  
B. Marí ◽  
J. Cembrero
Keyword(s):  
Optical Properties ◽  
Surface Morphology ◽  
Zno Films

Surface Morphology and Optical Properties of ZnO Films Synthesis Using Different Solvent

2013 ◽  
Vol 832 ◽  
pp. 478-482 ◽  
Author(s):  
Sharul Ashikin Kamaruddin ◽  
Mohd Zainizan Sahdan ◽  
Kah Yoong Chan ◽  
Siti Nooraya Mohd Tawil ◽  
Nayan Nafarizal ◽  
...  
Keyword(s):  
Optical Properties ◽  
Surface Morphology ◽  
Ethylene Glycol ◽  
Sol Gel ◽  
Visible Region ◽  
Reaction Medium ◽  
Zno Films ◽  
Large Area ◽  
Vis Spectroscopy ◽  
Sol Gel Process

Zinc oxide (ZnO) is a promising electronic material for a variety of large area electronic applications including thin-film sensors, transistors, and solar cells. Various techniques have been focused and explored to synthesize ZnO films. In this study, sol-gel process was adopted as the fabrications process to grow the ZnO films. Three different types of solvents were used including ethanol, isopropanol and ethylene glycol as the reaction medium in the ZnO solution. The correlation between different solvents used and the properties of the ZnO films was explored and observed. The surface morphologies, structural and optical properties were examined using field émission scanning electron microscope (FESEM), X-ray diffractometer (XRD) and ultraviolet-visible (UV-Vis) spectroscopy. Through the observation from FESEM results, the surface morphology changed when different solvents were used. The crystallographic structures of the ZnO films demonstrate high crystallinity, and the extracted crystallite size is around 30 nm. Furthermore, ZnO films synthesized using isopropanol and ethylene glycol exhibit high transmittance spectra greater than 80% in the visible region. In general, the experimental results revealed that different solvents in the sol-gel process exert influences on the properties of the ZnO films.

Structural, Electrical and Optical Properties of Li-Doped ZnO Thin Films Influenced by Annealing Oxygen Pressure

2011 ◽  
Vol 299-300 ◽  
pp. 530-533
Author(s):  
Li Dan Tang ◽  
Bing Wang ◽  
Jian Zhong Wang
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Oxygen Pressure ◽  
Visible Region ◽  
Zno Thin Films ◽  
Zno Films ◽  
Electrical And Optical Properties ◽  
Axis Orientation ◽  
Surface Optical ◽  
Doped Zno

Li-doped ZnO thin films were grown on quartz substrates by radio frequency magnetron sputtering and In-situ annealing. The structural, electrical and optical properties of Li-doped ZnO films strongly depend on the annealing oxygen pressure. XRD and AFM analysis indicate that the ZnO films possess a good crystallinity with c-axis orientation, uniform thickness and dense surface. Optical transmission spectra show a high transmittance (~85%) in the visible region. Hall measurement demonstrates that ZnO films have p-type conduction with a Hall mobility of 5.0 cm2/Vs, resistivity of 0.97Ωcm and carrier concentration of 1.60×1017cm-3when annealing oxygen pressure is 1Pa.

Optical Properties of Sputtered Silver Granular Films

2005 ◽  
Vol 480-481 ◽  
pp. 287-292 ◽  
Author(s):  
S.E. Paje ◽  
F. Teran ◽  
J.M. Riveiro ◽  
J. Llopis ◽  
M.A. García ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Optical Properties ◽  
Optical Absorption ◽  
Surface Morphology ◽  
Silver Clusters ◽  
Plasmon Excitation ◽  
Granular Films ◽  
Silver Films ◽  
Atomic Force ◽  
Atomic Force Micrographs

In this research we study optical absorption and morphology of silver films prepared with a sputtering method. Silver granular films are obtained on a glass substrate for films with thickness smaller than about 60 Å. Superficial silver clusters of around 100 nm in diameter are clearly seen in the atomic force micrographs. The absorption of these samples are characterized by plasmon excitation in the 450-650 nm spectral range, which differs from the known excitation of silver nanoparticles fabricated by different techniques. The optical absorption of silver granular films depend on sputtering conditions like substrate temperature or deposition rate and correlates with the surface morphology.

scholarly journals Fabrication of Transparent Mg(OH)2 Thin Films by Drop-Dry Deposition

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 724
Author(s):  
Tong Li ◽  
Masaya Ichimura
Keyword(s):  
Thin Films ◽  
Aqueous Solution ◽  
Optical Properties ◽  
Surface Morphology ◽  
Magnesium Hydroxide ◽  
Dry Deposition ◽  
Visible Range ◽  
Substrate Heating ◽  
Water Effects ◽  
Deposition Conditions

Magnesium hydroxide (Mg(OH)2) thin films were deposited by the drop-dry deposition (DDD) method using an aqueous solution containing Mg(NO3)2 and NaOH. DDD was performed by dropping the solution on a substrate, heating-drying, and rinsing in water. Effects of different deposition conditions on the surface morphology and optical properties of Mg(OH)2 thin films were researched. Films with a thickness of 1−2 μm were successfully deposited, and the Raman peaks of Mg(OH)2 were observed for them. Their transmittance in the visible range was 95% or more, and the bandgap was about 5.8 eV. It was found that the thin films have resistivity of the order of 105 Ωcm. Thus, the transparent and semiconducting Mg(OH)2 thin films were successfully prepared by DDD.

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