Multiple Regression Model on Optical Properties of Tin Oxide Thin Film

2015 ◽  
Vol 1107 ◽  
pp. 520-525
Author(s):  
Fouziah Md.Yassin ◽  
Saturi Baco ◽  
Noraini Abdullah
Keyword(s):  
Thin Film ◽  
Optical Properties ◽  
Absorption Coefficient ◽  
Band Gap ◽  
Multiple Regression ◽  
Tin Oxide ◽  
Energy Band ◽  
Oxide Thin Film ◽  
Transmission Spectra ◽  
Energy Band Gap

Tin Oxide (SnO2) thin film is one of the important transparent conducting oxides (TCOs) due to its electrical and optical transparency in visible light spectrum. This study presents the best model in estimating optical properties of tin oxide thin film which is performed using the absorption coefficient of the film. The annealing temperature is at 473 K prepared by radio frequency sputtering technique. Twelve multiple regression (MR) models with interactions are generated from three independent variables (transmission spectra, energy band gap and the wavelength of light). They are developed from data sets of 50. The best model M8.0.0 is chosen from the 6 selected models based on the Eight Selection Criterion (8SC). Best model will have the majority criteria with the least value. Factors affect the absorption coefficient are found to be X1(transmission spectra), X2(energy band gap) and X1X2(interaction between transmission spectra and energy band gap).

scholarly journals The effect of dopant material to optical properties: energy band gap Tin Oxide thin film

2021 ◽  
Vol 1816 (1) ◽  
pp. 012114
Author(s):  
A Doyan ◽  
Susilawati ◽  
L Muliyadi ◽  
S Hakim ◽  
H Munandar ◽  
...  
Keyword(s):  
Thin Film ◽  
Optical Properties ◽  
Band Gap ◽  
Tin Oxide ◽  
Energy Band ◽  
Oxide Thin Film ◽  
Energy Band Gap

scholarly journals Effect of Dopant Concentration on the Structural, Optical and Sensing Properties of (SnO2)1-x(TiO2:CuO)x Sprayed Films

2019 ◽  
Vol 16 (2) ◽  
pp. 0361
Author(s):  
Mahmood Et al.
Keyword(s):  
Optical Properties ◽  
Band Gap ◽  
Energy Band ◽  
Spray Pyrolysis Technique ◽  
Single Crystal Silicon ◽  
Dielectric Constants ◽  
Energy Band Gap ◽  
Crystal Silicon ◽  
X Ray ◽  
Regular Manner

      Spray pyrolysis technique was subjected to synthesized (SnO2)1-x (TiO2: CuO) x Thin films on different substrates like glass and single crystal silicon using. The structure of the deposited films was studied using x-ray diffraction. A more pronounced diffraction peaks of SnO2 while no peaks of (CuO , TiO2 ) phase appear in the X-ray profiles by increasing of the content of (TiO2 , CuO) in the sprayed films. Mixing concentration (TiO2 , CuO) influences on the size of the crystallites of the SnO2 films ,the size of crystallites of the spray paralyzed oxide films change in regular manner by increasing of (TiO2 , CuO) amount. The effect of mixing concentration on the optical properties of the films was also investigated. The reflectance and transmittance spectra  in the wavelength range (300-1100) nm were employed to determine the optical properties such as energy band gap (Eg) and refractive index (n),  extinction coefficient  (k) , real and imaginary parts of dielectric constants (ε1, ε2) for (SnO2)1-x(TiO2:CuO)x films. The energy band gap omit of which showed reduction from (3.65 to 2.2) eV by reducing of SnO2 amount from (100 to 70) % .The reduction of energy band gap was ascribed to the new tail states introduced in the band gap of tin oxide. The sensitivity of the prepared sensor film was determined resistance difference of the films when exposed to oxidizing gas. The data declared that the mixed SnO2 films have better sensitivity in comparison with unmixed films.

Analysis of Defects and Surface Roughness on the Hydrogenated Amorphous Silicon (a-Si:H) Intrinsic Thin Film for Solar Cells

2019 ◽  
Vol 966 ◽  
pp. 398-403
Author(s):  
Yoyok Cahyono ◽  
Novita Dwi Purnamasari ◽  
Mochamad Zainuri ◽  
Suminar Pratapa ◽  
Darminto
Keyword(s):  
Thin Film ◽  
Surface Roughness ◽  
Solar Cells ◽  
Band Gap ◽  
Indium Tin Oxide ◽  
Energy Band ◽  
Thin Layers ◽  
Oxide Glass ◽  
Energy Band Gap ◽  
Hydrogen Dilution

Effect of defect - through observation of energy absorption Urbach, on deposition rate, energy band gap, and surface roughness of intrinsic thin film are investigated using Radio Frequency Plasma Enhance Chemical Vapor Deposition (RF-PECVD). Films are grown on ITO (Indium Tin Oxide) glass substrate. Analysis of energy band gap is conducted to determine changes in the structure of a thin film of a-Si:H. Energy band gap is important to determine the portion of the spectrum of sunlight that is absorbed solar cells. From the characterization using UV-Vis spectrometer and the Tauc’s plot method, the width of the resulting energy band gap is greater if the hydrogen dilution is increased. It can be shown that the increase of the hydrogen dilution, will increase the energy band gap, and the surface roughness of thin layers. Instead, the improvement of the hydrogen dilution decrease the rate of deposition and Urbach energy. It is estimated that with greater hydrogen dilution, an intrinsic thin film of a-Si:H is more conductive for more reduction in residual of band tail defects or dangling bond defects.

scholarly journals Influence of substrate temperature and deposition time in energy band gap characteristic of lead sulfide thin film

2021 ◽  
Vol 2034 (1) ◽  
pp. 012026
Author(s):  
A A Faremi ◽  
M A Adekoya ◽  
S S Oluyamo ◽  
P A Adeyemo ◽  
A T Akindadelo ◽  
...  
Keyword(s):  
Thin Film ◽  
Substrate Temperature ◽  
Band Gap ◽  
Lead Sulfide ◽  
Energy Band ◽  
Deposition Time ◽  
Energy Band Gap ◽  
Influence Of Substrate

Optical applications of transition metal ion doped phosphate glasses

2021 ◽  
Author(s):  
Modem Sreenivasulu ◽  
Vijaya Kumar Chavan
Keyword(s):  
Transition Metal ◽  
Band Gap ◽  
Energy Band ◽  
Metal Ion ◽  
Phosphate Glasses ◽  
Transmission Spectra ◽  
Energy Band Gap ◽  
Transition Metal Ion ◽  
Concentration Levels ◽  
Gap Values

Abstract The transition metal ion-doped lithium phosphate glasses are prepared with a novel composition by melt quenching method, XRD patterns revealed their characteristic amorphous nature. The structural and physical properties of the prepared glasses are significantly varying with the increased concentration levels of dopant. Optical absorption and transmission spectra of the glass samples are analyzed. The absorption peaks are observed in ultraviolet, visible and infrared regions.The direct and indirect energy band gap values are decreasing while Urbach's energy values are increasing as the concentration levels of dopants are increasing. The obtained energy band gap values are in the range of semiconductor materials. The optical transmission spectra of these transition metal ion-doped glasses reveal their application as bandpass filters with filtering ability in UV or Visible regions at double and triple wavelengths and hence useful as dual band-pass filters. The glasses with <10 full width half maximum(FWHM) values are useful for narrowband lasers.

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