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• W4317893048 endingPage "035817" @default.
• W4317893048 startingPage "035817" @default.
• W4317893048 abstract "Abstract This study fabricates novel tris (2-phenylpyridinato-C 2 , N] iridium III <?CDATA $Ir{(ppy)}_{3}$?> <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML overflow=scroll> <mml:mi>I</mml:mi> <mml:mi>r</mml:mi> <mml:msub> <mml:mrow> <mml:mo stretchy=false>(</mml:mo> <mml:mi>p</mml:mi> <mml:mi>p</mml:mi> <mml:mi>y</mml:mi> <mml:mo stretchy=false>)</mml:mo> </mml:mrow> <mml:mrow> <mml:mn>3</mml:mn> </mml:mrow> </mml:msub> </mml:math> thin films using an electron beam evaporator and investigates their structure formation, surface morphology, and linear/nonlinear optical properties. The structural features of <?CDATA $Ir{(ppy)}_{3}$?> <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML overflow=scroll> <mml:mi>I</mml:mi> <mml:mi>r</mml:mi> <mml:msub> <mml:mrow> <mml:mo stretchy=false>(</mml:mo> <mml:mi>p</mml:mi> <mml:mi>p</mml:mi> <mml:mi>y</mml:mi> <mml:mo stretchy=false>)</mml:mo> </mml:mrow> <mml:mrow> <mml:mn>3</mml:mn> </mml:mrow> </mml:msub> </mml:math> thin films were examined using Fourier Transform spectroscopy (FTIR), x-ray diffraction (XRD), Scanning Electron Microscope (SEM). The optical c.characteristics for various doses of gamma radiation (3 kGy, 6 kGy and 9kGy) were investigated using a UV-Vis-NIR spectrophotometer in the wavelength range from 200 nm to 2500 nm. In addition, the values of fundamental energy gap (E fundamental ) values showed a reduction from 2.30 to 1.92 eV and urbach energy <?CDATA $({E}_{begin{array}{c}Uend{array}})$?> <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML overflow=scroll> <mml:mo stretchy=false>(</mml:mo> <mml:msub> <mml:mrow> <mml:mi>E</mml:mi> </mml:mrow> <mml:mrow> <mml:mtable columnalign=left> <mml:mtr> <mml:mtd> <mml:mi>U</mml:mi> </mml:mtd> </mml:mtr> </mml:mtable> </mml:mrow> </mml:msub> <mml:mo stretchy=false>)</mml:mo> </mml:math> increasing from 0.23 to 0.30 when the deposited film irradiated for 9 kGy. The third-order nonlinear susceptibility ( <?CDATA ${chi }^{(3)}$?> <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML overflow=scroll> <mml:msup> <mml:mrow> <mml:mi>χ</mml:mi> </mml:mrow> <mml:mrow> <mml:mo stretchy=false>(</mml:mo> <mml:mn>3</mml:mn> <mml:mo stretchy=false>)</mml:mo> </mml:mrow> </mml:msup> </mml:math> ), the nonlinear absorption coefficient ( <?CDATA $beta $?> <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML overflow=scroll> <mml:mi>β</mml:mi> </mml:math> ) and the nonlinear refractive index ( <?CDATA ${n}_{2}$?> <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML overflow=scroll> <mml:msub> <mml:mrow> <mml:mi>n</mml:mi> </mml:mrow> <mml:mrow> <mml:mn>2</mml:mn> </mml:mrow> </mml:msub> </mml:math> ) were determined for all gamma doses. Furthermore, The optical electronegativity ( <?CDATA ${eta }_{opt}$?> <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML overflow=scroll> <mml:msub> <mml:mrow> <mml:mi>η</mml:mi> </mml:mrow> <mml:mrow> <mml:mi>o</mml:mi> <mml:mi>p</mml:mi> <mml:mi>t</mml:mi> </mml:mrow> </mml:msub> </mml:math> ), the first moment ( <?CDATA ${M}_{-1}$?> <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML overflow=scroll> <mml:msub> <mml:mrow> <mml:mi>M</mml:mi> </mml:mrow> <mml:mrow> <mml:mo>−</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:msub> </mml:math> ), the second moments of optical spectra ( <?CDATA ${M}_{-3}$?> <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML overflow=scroll> <mml:msub> <mml:mrow> <mml:mi>M</mml:mi> </mml:mrow> <mml:mrow> <mml:mo>−</mml:mo> <mml:mn>3</mml:mn> </mml:mrow> </mml:msub> </mml:math> ), the oscillator strength ( f), the dispersion energy ( <?CDATA ${E}_{d}$?> <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML overflow=scroll> <mml:msub> <mml:mrow> <mml:mi>E</mml:mi> </mml:mrow> <mml:mrow> <mml:mi>d</mml:mi> </mml:mrow> </mml:msub> </mml:math> ), infinite dielectric constant ( <?CDATA ${varepsilon }_{infty }$?> <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML overflow=scroll> <mml:msub> <mml:mrow> <mml:mi>ε</mml:mi> </mml:mrow> <mml:mrow> <mml:mi>∞</mml:mi> </mml:mrow> </mml:msub> </mml:math> ), oscillator energy,oscillator energy ( <?CDATA ${E}_{0}$?> <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML overflow=scroll> <mml:msub> <mml:mrow> <mml:mi>E</mml:mi> </mml:mrow> <mml:mrow> <mml:mn>0</mml:mn> </mml:mrow> </mml:msub> </mml:math> ), the lattice dielectric constant ( <?CDATA ${varepsilon }_{L}$?> <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML overflow=scroll> <mml:msub> <mml:mrow> <mml:mi>ε</mml:mi> </mml:mrow> <mml:mrow> <mml:mi>L</mml:mi> </mml:mrow> </mml:msub> </mml:math> ), and to the effective mass <?CDATA $left(tfrac{N}{{m}^{* }}right)$?> <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML overflow=scroll> <mml:mfenced close=) open=( separators=> <mml:mrow> <mml:mstyle displaystyle=false> <mml:mfrac> <mml:mi>N</mml:mi> <mml:mrow> <mml:msup> <mml:mrow> <mml:mi>m</mml:mi> </mml:mrow> <mml:mo>*</mml:mo> </mml:msup> </mml:mrow> </mml:mfrac> </mml:mstyle> </mml:mrow> </mml:mfenced> </mml:math> for as deposited film are calculated as : 1.860, 17.29, 300.20, 0.9960 (eV) 2 , 4.15 eV, 4.52, 1.18 eV, 5.58, and 8.86 × 10 59 kg −1 m −3 respectively. The high values of ( <?CDATA ${chi }^{(3)}$?> <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML overflow=scroll> <mml:msup> <mml:mrow> <mml:mi>χ</mml:mi> </mml:mrow> <mml:mrow> <mml:mo stretchy=false>(</mml:mo> <mml:mn>3</mml:mn> <mml:mo stretchy=false>)</mml:mo> </mml:mrow> </mml:msup> </mml:math> ) for as deposited and irradiated are essential for the creation of low power devices for nonlinear optical applications involving ultrafast switches, optical computers, and ultra-pulsed lasers." @default.
• W4317893048 created "2023-01-25" @default.
• W4317893048 creator A5006762856 @default.
• W4317893048 creator A5061038653 @default.
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• W4317893048 date "2023-02-13" @default.
• W4317893048 modified "2023-09-27" @default.
• W4317893048 title "Gamma radiation induced variation in structure formation and optical characteristics of evaporated tris [2-phenylpyridinato-C₂,N]iridium(III) films prepared by electron beam evaporator in photovoltaic applications" @default.
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• W4317893048 doi "https://doi.org/10.1088/1402-4896/acb5cd" @default.
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