Sintesis dan Karakterisasi Komposit Mn-N-TiO2/Bentonit untuk Degradasi Polutan Organik by Ruslan, Prismawiryanti, Ni Ketut Sumarni, Ahmad Ridhay, Mutiara Zalfa Riski, Sitti Nurhalisa, Anggi Marsela

“…The results of the characterization of the Mn-N-TiO2/Bentonite configuration show that the band gap energy of Mn-N- TiO2/Bentonite with a variation of 5 g has a band gap energy of 2.14 eV with anatase crystal form. …”
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Ag-Ag2O nanocomposite biosynthesis by mixed bacterial cultivation and effect of the ph on size and optical properties of the nanocomposite by Morad G. S. S. Al-Asbahi, Bashir A. Al-Ofiri, Fuad A. A. Saad, Adnan Alnehia, Muhammad Hadi

“…Abstract This study examines the influence of pH on the energy band gap and crystallite size during the synthesis of a novel Ag-Ag2O nanocomposites through the mixed cultivation of Lactobacillus sp. and Bacillus sp. …”
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Enhanced Optical Properties of ZnO-TiO₂ Films Through Co-Sensitization with Multiple Natural Dyes by Musyarofah Musyarofah, Inas Nuraini, Budi Prayitno, Lusi Ernawati, Andi Idhil Ismail, Triwikantoro Triwikantoro

“…The UV absorbance of ZnO powder shows significant peaks at wavelengths of 255 and 345 nm, with a band gap energy of 3.07 eV. Meanwhile, TiO2 powder exhibits a maximum peak at 325 nm and possesses a band gap energy of 3.16 eV. …”
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Optical Properties and Characterization of Prepared Sn-Doped PbSe Thin Film by M. R. Khanlary, E. Salavati

“…The improvement of optical band gap of Sn/PbSe films irradiated by different doses of irradiation was studied using transmission spectroscopy.…”
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Floquet Theory for Discontinuously Supported Waveguides by A. Sorzia

“…It is further shown that the end points of the band gap structure correspond to periodic and semiperiodic solutions of the Hill equation.…”
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Effect of Process Pressure on the Properties of Cu₂O Thin Films Deposited by RF Magnetron Sputtering by Junghwan Park, Chang-Sik Son, Young-Guk Son, Donghyun Hwang

“…Optical characterization revealed that transmittance increased with pressure, reaching ~90% in the NIR range at 15 mTorr. The optical band gap (<i>E</i>_g) values increased from 2.34 eV at 1 mTorr to 2.43 eV at 15 mTorr with higher process pressure. …”
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Silver-blend hydroxyapatite bio-ceramics for enhanced photocatalytic degradation of methylene blue by Manoj V. Junnarkar, Prateek V. Sawant, Mahadev A. Parekar, Avadhut V. Kardile, Ashish B. Thorat, Ramakant P. Joshi, Ravindra U. Mene

“…Ultra violet (UV)-visible diffuse reflectance spectroscopy is used to monitor the changes in the band-gap energies of the samples. The Tauc plots show the decrease in the band gap of HAp due to Ag doping. …”
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Graded Carrier Concentration Absorber Profile for High Efficiency CIGS Solar Cells by Antonino Parisi, Riccardo Pernice, Vincenzo Rocca, Luciano Curcio, Salvatore Stivala, Alfonso C. Cino, Giovanni Cipriani, Vincenzo Di Dio, Giuseppe Ricco Galluzzo, Rosario Miceli, Alessandro C. Busacca

“…Our results show that, in uniform CIGS cell, the efficiency, the open circuit voltage, and short circuit current heavily depend on CIGS band gap. Our numerical analysis highlights that the band gap value of 1.40 eV is optimal, but both the presence of Molybdenum back contact and the high carrier recombination near the junction noticeably reduce the crucial electrical parameters. …”
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Influence of Pressure on the Temperature Dependence of Quantum Oscillation Phenomena in Semiconductors by G. Gulyamov, U. I. Erkaboev, A. G. Gulyamov

“…It is shown that the effect of pressure on the band gap is manifested to oscillations and ShdH and dHvA effects in semiconductors.…”
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Microstructural transformation of GO to rGO by ascorbate acid green-agent enhanced using sonication method by Masruroh, Freygieon Ogiek Rizal Sukma, Kormil Saputra, Nandang Mufti, Kusumandari, Anton Prasetyo, Rachmat T Tjahjanto, Dionysius J D H Santjojo

“…The primary objectives of this study were to evaluate the role of ascorbic acid in altering the microstructure of rGO and to examine the effect of sonication duration on the band gap. Characterization of particle size distribution and band gap was carried out using PSA and UV–vis, while changes in microstructure, crystallization, and morphology were analyzed using XRD, Raman spectroscopy, and SEM/EDX. …”
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Green approach to synthesis polymer composites based on chitosan with desired linear and non-linear optical characteristics by Dyari M. Mamand, Sarkawt A. Hussen, Shujahadeen B. Aziz

“…Various models were used to determine the optical band gap. The band gap drops from $$\:5.3\:to\:\approx\:\:1.5\:\text{e}\text{V}$$ when chitosan is loaded with a 36% Zn2+-metal complex. …”
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Optical Study on Poly(methyl methacrylate)/Poly(vinyl acetate) Blends by R. M. Ahmed

“…The study has been also extended to include the changes in the optical parameters including the band tail width and band gap energies for the samples. Moreover, the refractive index was calculated for the samples from specular reflection and absorption spectrum before and after exposure to UV and filtered radiation.…”
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Effect of EDTA on the Growth Kinetics and Structural and Optical Properties of KDP Crystal by Anisur Rahman, Jiban Podder

“…FTIR analysis has been carried out to characterize the grown crystals. Band gap has been calculated from transmission spectra.…”
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Numerical Simulation of Carbon Nanotubes/GaAs Hybrid PV Devices with AMPS-1D by Georgi Xosrovashvili, Nima E. Gorji

“…The current-voltage characteristics, quantum efficiency, band gap, and thickness variation of the photovoltaic response will be quantitatively considered.…”
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Doping of TiO2 Polymorphs for Altered Optical and Photocatalytic Properties by Xiliang Nie, Shuping Zhuo, Gloria Maeng, Karl Sohlberg

“…Dopant effects on the band gap and photocatalytic activity are interpreted with reference to a simple qualitative picture of the TiO2 electronic structure, which is supported with first-principles calculations.…”
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Wideband Negative Permittivity and Double Negative Fishnet-Mushroom-Like Metamaterial in X-Band Waveguide by Ahmed Mahmood, Golge Ogucu Yetkin, Cumali Sabah

“…The proposed design is predicted to provide the electromagnetic band gap characterization with desired reiterative characteristic parameters, negative permittivity, and negative permeability exhibiting a double negative left-handed region, which is identified with the X-band regime with good agreement between the simulated and the measured results.…”
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Proposal of High-Temperature-Operation Tolerant SOI MOSFET and Preliminary Study on Device Performance Evaluation by Yasuhisa Omura

“…It is shown that its threshold voltage is higher than that of the conventional SOI MOSFET because its local thin Si regions offer an expanded effective band gap. It is shown that HTOT SOI MOSFET with 1-nm-thick local-thin Si regions is almost insensitive to temperature for 𝑇<700K (427 C). …”
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Electronic Structure and Optical Properties of GaAs1-xBix Alloy by Xindong You, Renjie Zhou

“…The lattice constant of GaAs1-xBix increases with Bi concentration while the alloy remains in the zinc-blende structure. The band gap of GaAs1-xBix clearly shrinks with the Bi concentration. …”
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Structural, Electronic, Mechanical and Optical Properties of RhZrZ (Z = As, Sb) Half-Heusler Compounds: First-Principles Calculations by Adem Beriso Bejo, Megersa Wodajo Shura, Mesfin Asfaw Afrassa, Kumneger Tadele, Fekadu Tolessa Marem, Kunsa Haho Habura

“…Calculations of band structure and density of states indicated that they are semiconductors with RhZrAs direct and RhZrSb indirect band gap. Furthermore, the investigation of the optical properties reveals that there is a high absorption coefficient and low electron energy loss in visible and some ultraviolet energy spectrum indicating that these compounds are potential candidates for optoelectronic applications.…”
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Microstrip Patch Antenna Bandwidth Enhancement Using AMC/EBG Structures by R. C. Hadarig, M. E. de Cos, F. Las-Heras

“…A microstrip patch antenna with bandwidth enhancement by means of artificial magnetic conductor (AMC)/electromagnetic band-gap structure (EGB) is presented. The electrical characteristics of the embedded structure are evaluated using MoM simulations. …”
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