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Hierarchical band gaps in complex periodic systems
Published 2024-06-01“…This result shows that if a frequency falls in a band gap for every constituent element then it must be in a band gap for the combined complex periodic structure. …”
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Study of Band Gap of Silver Nanoparticles—Titanium Dioxide Nanocomposites
Published 2014-01-01“…Measurements of optical band gap, obtained by Tauc’s equation, indicate a variation of about 1.6 eV.…”
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Investigation on the Band Gap and Negative Properties of Concentric Ring Acoustic Metamaterial
Published 2018-01-01“…It can be seen that the number of oscillators in the cell is closely related to the number of band gaps due to the coupling effect, when the filling rate is of a certain value.…”
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Surface Plasmon-Induced Band Gap in the Photocurrent Response of Organic Solar Cells
Published 2010-01-01“…Angle-dependent surface plasmons (SPs) with a large band gap were observed in the normalized photocurrent by the P3HT-PCBM layer as a function of wavelength. …”
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Quantitative Analysis and Band Gap Determination for CIGS Absorber Layers Using Surface Techniques
Published 2018-01-01“…CIGS material is particularly promising due to its exceptionally high absorption coefficient and large band gap range, which is adjustable as a function of alloy stoichiometry. …”
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Tuning the Refractive Index and Optical Band Gap of Silk Fibroin Films by Electron Irradiation
Published 2015-01-01“…It was found that the reduction in optical band gap and increase in refractive index with increasing radiation dosage was observed. …”
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Effect of Electronic Acceptor Segments on Photophysical Properties of Low-Band-Gap Ambipolar Polymers
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Oxygen-modulated photoresponse in nickel oxide thin films for wide band gap photodetector application
Published 2025-01-01“…Abstract Metal oxides, due to their wide band gap, are well suited for use in photodetectors as the active light-absorbing layer. …”
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Enhancing Carriers’ Confinement by Introducing BAlGaN Quantum Barriers for the Better Optoelectronic Performance of Deep UV LEDs
Published 2025-01-01Subjects: Get full text
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Beyond the K-valley: exploring unique trion states in indirect band gap monolayer WSe2
Published 2025-02-01“…Abstract We calculate the optical properties of monolayer WSe2 using ab initio many-body screened configuration interaction. For this indirect band gap material we describe additional species of negatively charged trions involving the Q-valley which are energetically more favorable than those formed at the K-valley. …”
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Effects of Controlling the AZO Thin Film's Optical Band Gap on AZO/MEH-PPV Devices with Buffer Layer
Published 2012-01-01“…The band gaps were controlled by varying the flow rates of Ar and O2 used to deposit the AZO. …”
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Effects of the Argon Pressure on the Optical Band Gap of Zinc Oxide Thin Films Grown by Nonreactive RF Sputtering
Published 2013-01-01“…After annealing at 200°C and 500°C, optical band gaps decrease considerably. The observed widening of the band gap with increasing PAr can be understood as being a consequence of the poorer crystallinity of films grown at higher pressures. …”
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Three-periodic 1D photonic crystals based on dielectric oxides SiO2, Al2O3, TiO2, ZrO2: an emerging class of structures with wide possibilities for applied photonics
Published 2024-06-01Subjects: “…photonic band gap (pbg)…”
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Modelling and performance analysis of amorphous silicon solar cell using wide band gap nc‐Si:H window layer
Published 2017-11-01“…Limited performance of such devices has been addressed by replacing a‐SiC:H with a wide band gap (∼2 eV) hydrogenated nano‐crystalline silicon (nc‐Si:H) layer that reportedly exhibits crystalline properties at small scale. …”
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Optical band gap modulation in functionalized chitosan biopolymer hybrids using absorption and derivative spectrum fitting methods: A spectroscopic analysis
Published 2025-01-01“…The results indicate that CS with Mn2+-complexes can produce polymer hybrids with high absorption, high refractive index and controlled optical band gaps, with a significant reduction from 6.24 eV to 1.21 eV. …”
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Strain Effects on the Band Gap and Diameter of CdSe Core and CdSe/ZnS Core/Shell Quantum Dots at Any Temperature
Published 2019-01-01“…We present the results of an experimental study about strain effects on the core band gap and diameter of spherical bare CdSe core and CdSe/ZnS core/shell quantum dots (QDs) synthesized by using a colloidal technique at varying temperatures. …”
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Determination of Structural and Optical Properties of Zn1-xCuxO Nanoparticles by Chemical Bath Deposition Waste Recovery Technique
Published 2023-09-01Subjects: Get full text
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Elastic Properties and the Band Gap of AlNxP1-x Semiconductor Alloy: A Comparative Study of Various Ab Initio Approaches
Published 2016-01-01“…The band gap bowings are unusually high, which confirms earlier reports.…”
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