optical direct band-gap
Optical and Antibacterial Studies of Zinc Magnesium Oxide Nanocomposite
... The optical band gap details of the nanocomposites can be directly calculated using UV absorption ...of optical band gap in the ...the optical direct band ...
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Intensity Dependent Nonlinear Absorption in Direct and Indirect Band Gap Crystals under Nano and Picosecond Z Scan
... indirect band gap semiconducting material. The optical properties have attracted much attention during the last few years due to its applications as a semicon- ductor materials detector which may be ...
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Influence of Annealing Temperature on Optical and Electrical Properties of Cu2ZnSnS4 (CZTS) thin Films Deposited by Sputtering Method from a Single Quaternary Target
... minutes. Optical transmittance and reflectance data of the films were utilized to compute the absorption coefficient, refractive index, extinction coefficient and optical band gap energy of ...
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Effect of Deposition Parameters on Electrodeposited Cuprous Oxide Thin Films
... Optical measurements indicated that the deposited Cu2O thin films have a direct band gap 2.03eV-2.08eV and changing deposition parameters pH and deposition potential have a weak effect o[r] ...
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Polyaniline/MnTiO3Nanocomposites: Fabrication, Characterization and Optical band gap
... of direct band gap for MnTiO 3 and the PANI/MnTiO 3 NCs with 10 and 20wt% of MnTiO 3 NPs loading using the Tauc model came out to be ...1.25. Band gap analysis indicates semiconducting ...
5
Effect of Nano Sb2O3 on the Dispersive Optical Constants of PMMA Films
... measurements in the wavelength range (200-800) nm were studied and confirmed that PMMA films have an direct band gap that decreased from 5.15 to 4.66 eV as the doping concentration increases to 5wt%. ...
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Stimulated emission and optical properties of solid solutions of Cu(In,Ga)Se2 direct band gap semiconductors
... emission, optical properties, and structural characteristics of non-irradiated and proton- irradiated Cu(In,Ga)Se 2 thin films deposited on soda lime glass substrates using co-evaporation of elements in a ...
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Optical Characterisation of ZnSe Thin Films by Using Electro Deposition Technique
... films. Optical studies show the presence of nanocrystalline particles whose size is nearly 44 ...A direct optical band gap of ...
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Study of the Optical properties and Optical Band gap for the coumarine – 102 / PMMA thin films
... allowed band gap was ...forbidden direct gap was calculated by plotting the relation (αhv) 2/3 with the photon energy (hv) as illustrated in ...of band gap were constant with ...
8
Optical properties of Ti:Al2O3 single crystal
... The optical transition, optical band gap and band structure of crystalline and non- crystalline materials can be derived from the optical absorption ...the optical ...
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Determination of the direct band-gap energy of InAlAs matched to InP
... the band-gap energy of InAlAs matched to InP at low ...the optical absorp- tion spectroscopy is not ...the optical threshold shifts to low energies when measured by ...the optical ...
5
Gamma Radiation Induced Modification on Optical Gap of Polycarbonate Detectors
... The optical characterization of these detectors have been studied through the measurements of UV-visible absorption spectra of blank and γ- irradiated ...nm). Direct and indirect allowed optical ...
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Effect of Heat Treatment on the Nanoscale Structure and Optical Properties of Cd2SnO4 Thin Films Deposited by RF Magnetron Sputtering
... The optical energy gap is estimated from the optical measurements by analyzing the optical data with the ex- pression for the optical absorbance, and the photon energy, h ϑ , using ...
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Structural, electronic and optical properties of HGS under pressure using FP LAPW method
... and optical properties of HgS materials using the first principles ...for band structures and DOS show that this compound have inverted band structure and showing semi-metallic behaviour at ZB ...
7
Electronic and Optical Properties of GaAs Armchair Nanoribbons: DFT Approach
... and optical properties of N atom‐width (N: 4, 8, 12, 16) armchair GaAs nanoribbons (NA GaAs NRs) have been studied with hydrogen (H) passivated nanoribbons using the DFT ...with direct band gaps of ...
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Characterization of Aluminum Doped Zinc Oxide (Azo) Thin Films Prepared by Reactive Thermal Evaporation for Solar Cell Applications
... wide band gap semiconductors with low resistance and high transparency in the visible ...The direct optical band gap of ITO films is generally greater than ...
6
Direct Optical Energy Gap in Amorphous Silicon Quantum Dots
... Silicon is a dominant material in micro and nanoelec- tronics technology, but because of its indirect band struc- ture, it has not been possible to use silicon as optoelec- tronics devices such as light emitting ...
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Structural and Optical studies of CdI2 –Ag 2SO4 –TeO 2–B23 Glass system
... varying from 0 to 25 with step 5 and these system were preared by melt quenching method, characterized by XRD, FTIR, optical absorption. Physical parameters like density, average molecular weight, molar volume, ...
7
Band structure calculations of Si–Ge–Sn alloys: achieving direct band gap materials
... indirect-to-direct gap transition is also in general agreement with ...the direct band gap, that the optical measurements of this gap are quite difficult because of small ...
15
Cu3MCh3 (M = Sb, Bi; Ch = S, Se) as candidate solar cell absorbers: Insights from theory
... In an increasingly energy-dependent global society, the develop- ment of solar cell technologies that are sustainable, economically viable, and environmentally friendly is of paramount importance. 1 Ideal materials for ...
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