Nonlinear optical parameters of nanocrystalline AZO thin film measured at different substrate temperatures

2016 ◽  
Vol 481 ◽  
pp. 97-103 ◽  
Author(s):  
Asim Jilani ◽  
M.Sh Abdel-wahab ◽  
Attieh A. Al-ghamdi ◽  
Ammar sadik Dahlan ◽  
I.S. Yahia
Keyword(s):  
Thin Film ◽  
Nonlinear Optical ◽  
Optical Parameters ◽  
Azo Thin Film ◽  
Substrate Temperatures

scholarly journals Structural, Optoelectrical, Linear, and Nonlinear Optical Characterizations of Dip-Synthesized Undoped ZnO and Group III Elements (B, Al, Ga, and In)-Doped ZnO Thin Films

Crystals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 252 ◽  
Author(s):  
A. M. Alsaad ◽  
A. A. Ahmad ◽  
I. A. Qattan ◽  
Qais M. Al-Bataineh ◽  
Zaid Albataineh
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Grain Size ◽  
Optical Properties ◽  
Nonlinear Optical ◽  
Zno Thin Films ◽  
Zno Films ◽  
Optical Parameters ◽  
Group Iii ◽  
Doped Zno

Undoped ZnO and group III (B, Al, Ga, and In)-doped ZnO thin films at 3% doping concentration level are dip-coated on glass substrates using a sol-gel technique. The optical properties of the as-prepared thin films are investigated using UV–Vis spectrophotometer measurements. Transmittance of all investigated thin films is found to attain high values of ≥80% in the visible region. We found that the index of refraction of undoped ZnO films exhibits values ranging between 1.6 and 2.2 and approximately match that of bulk ZnO. Furthermore, we measure and interpret nonlinear optical parameters and the electrical and optical conductivities of the investigated thin films to obtain a deeper insight from fundamental and practical points of view. In addition, the structural properties of all studied thin film samples are investigated using the XRD technique. In particular, undoped ZnO thin film is found to exhibit a hexagonal structure. Due to the large difference in size of boron and indium compared with that of zinc, doping ZnO thin films with these two elements is expected to cause a phase transition. However, Al-doped ZnO and Ga-doped ZnO thin films preserve the hexagonal phase. Moreover, as boron and indium are introduced in ZnO thin films, the grain size increases. On the other hand, grain size is found to decrease upon doping ZnO with aluminum and gallium. The drastic enhancement of optical properties of annealed dip-synthesized undoped ZnO thin films upon doping with group III metals paves the way to tune these properties in a skillful manner, in order to be used as key candidate materials in the fabrication of modern optoelectronic devices.

Preparation and Investigation of  structure, optical , nonlinear optical and thermoelectric properties of  Bi2Se3   thin film

2021 ◽  
Author(s):  
Ahmed Abdel Moez ◽  
H A Elmelgeei ◽  
A I Ali
Keyword(s):  
Thin Film ◽  
Refractive Index ◽  
Electron Microscope ◽  
Dielectric Loss ◽  
Nonlinear Optical ◽  
Energy Gap ◽  
Tangent Loss ◽  
Optical Parameters ◽  
Dispersion Energy ◽  
Nonlinear Optical Susceptibility

Abstract Bi2Se3 thin film were prepared using vacuum thermal evaporation technique. the structure and surface topography for this sample were investigated using both of Diffraction Electron Microscope photos (DEM) and Transmission Electron Microscope (TEM). Bi2Se3 thin film had a direct energy gap which was determined by using measured optical parameters such as optical transmittance (T) and optical reflectance (R). The values for both of the oscillating energy ( Eo) ,dispersion energy (Ed) and ratio of the free carrier concentration on the effective mass (N/m*) were determined optically using the calculated values of refractive index (n). The dielectrical parameters such as dielectric loss (ε\) and dielectric tangent loss dielectric loss (ε\\) were calculated. The density of states (DOS) for both of valence band (Nv) and conduction band (Nc) and also position of Fermi level were determined. The nonlinear optical results such as third-order nonlinear optical susceptibility (χ(3)), nonlinear refractive index (n2) and nonlinear absorption coefficient (βc) were determined. The influence of temperature on IV results were studied, finally the dependence of all of Dispersion factor (D), parallel inductance (Lp) and Seebeck coefficient (S) values on temperature for this film were studied.

Structural, optical and nonlinear optical studies of AZO thin film prepared by SILAR method for electro-optic applications

2017 ◽  
Vol 523 ◽  
pp. 31-38 ◽  
Author(s):  
D. Joseph Edison ◽  
W. Nirmala ◽  
K. Deva Arun Kumar ◽  
S. Valanarasu ◽  
V. Ganesh ◽  
...  
Keyword(s):  
Thin Film ◽  
Nonlinear Optical ◽  
Optical Studies ◽  
Silar Method ◽  
Azo Thin Film ◽  
Electro Optic

scholarly journals Flexible Methyl Cellulose/Polyaniline/Silver Composite Films with Enhanced Linear and Nonlinear Optical Properties

Polymers ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1225
Author(s):  
Ali Atta ◽  
Mostufa M. Abdelhamied ◽  
Ahmed M. Abdelreheem ◽  
Mohamed R. Berber
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Band Gap ◽  
Nonlinear Optical ◽  
Composite Films ◽  
Methyl Cellulose ◽  
Carbon Cluster ◽  
Nonlinear Susceptibility ◽  
Optical Parameters ◽  
Flexible Polymer

In order to potentiate implementations in optical energy applications, flexible polymer composite films comprising methyl cellulose (MC), polyaniline (PANI) and silver nanoparticles (AgNPs) were successfully fabricated through a cast preparation method. The composite structure of the fabricated film was confirmed by X-ray diffraction and infrared spectroscopy, indicating a successful incorporation of AgNPs into the MC/PANI blend. The scanning electron microscope (SEM) images have indicated a homogenous loading and dispersion of AgNPs into the MC/PANI blend. The optical parameters such as band gap (Eg), absorption edge (Ed), number of carbon cluster (N) and Urbach energy (Eu) of pure MC polymer, MC/PANI blend and MC/PANI/Ag films were determined using the UV optical absorbance. The effects of AgNPs and PANI on MC polymer linear optical (LO) and nonlinear optical (NLO) parameters including reflection extinction coefficient, refractive index, dielectric constant, nonlinear refractive index, and nonlinear susceptibility are studied. The results showed a decrease in the band gap of MC/PANI/AgNPs compared to the pure MC film. Meanwhile, the estimated carbon cluster number enhanced with the incorporation of the AgNPs. The inclusion of AgNPs and PANI has enhanced the optical properties of the MC polymer, providing a new composite suitable for energy conversion systems, solar cells, biosensors, and nonlinear optical applications.

Nonlinear-optical parameters of thin C60films at 532 nm

2004 ◽  
Vol 34 (1) ◽  
pp. 81-85 ◽  
Author(s):  
R A Ganeev ◽  
A I Ryasnyansky ◽  
V I Redkorechev ◽  
K Fostiropoulos ◽  
G Priebe ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Optical Parameters ◽  
532 Nm

Nonlinear optical parameters of fullerene films and solutions

2000 ◽  
Vol 30 (12) ◽  
pp. 1087-1090 ◽  
Author(s):  
R A Ganeev ◽  
A I Ryasnyansky ◽  
M K Kodirov ◽  
T Usmanov
Keyword(s):  
Nonlinear Optical ◽  
Optical Parameters

Nonlinear optical dynamic range compression with thin-film organic photorefractive material

2009 ◽  
Author(s):  
Bahareh Haji-saeed ◽  
Jed Khoury ◽  
Charles L. Woods ◽  
John Kierstead ◽  
Nasser Peyghambarian
Keyword(s):  
Thin Film ◽  
Nonlinear Optical ◽  
Dynamic Range ◽  
Dynamic Range Compression ◽  
Photorefractive Material
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