Prospects of Back Surface Field Effect in Ultra-Thin High-Efficiency CdS/CdTe Solar Cells from Numerical Modeling by Nowshad Amin, M. A. Matin, M. M. Aliyu, M. A. Alghoul, M. R. Karim, K. Sopian

“…The viability of 1 μm CdTe absorber layer together with possible back surface field (BSF) layers to reduce minority carrier recombination loss at the back contact in ultra thin CdS/CdTe cells was investigated. Higher bandgap material like ZnTe and low bandgap materials like Sb2Te3 and As2Te3 as BSF were inserted to reduce the holes barrier height in the proposed ultra thin CdS/CdTe cells. …”
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Photodetector Based on Titanium Oxide Nanoparticles Produced via Pulsed Laser Ablation by Ban A. Bader, Iman H. Hadi, Muna Y. Slewa, Khawla S Khashan, Farah A. Abdulameer

“…The SEM exhibits a spherical shape with sizing changing from 5 nm to 50 nm. The bandgap was 3.6 eV which was determined from the Tauc chart. …”
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Dual Band Magnonic Crystals: Model System and Basic Spin Wave Dynamics by Federico Montoncello, Loris Giovannini

“…The SW bands are separated by a very large bandgap (in our model system, 6 GHz), easily tunable by changing the direction of an applied magnetic field, and the overlap of their spatial distribution, for any frequency of their bands, is always negligible. …”
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Novel Meandered Line EBG Filters with Significant Size Reduction Using Sine Tapering by S. M. Shakil Hassan, Kalyan Kumar Halder, Md. Nurunnabi Mollah

“…Tapering electromagnetic bandgap (EBG) structures is a common method in designing microstrip filters with different periodic structures. …”
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Design and Optimization of an EBG Antenna with an Efficient Electromagnetic Solver by Josefa Gómez, Abdelhamid Tayebi, José Ramón Almagro, Iván González, Felipe Cátedra

“…A novel electromagnetic bandgap (EBG) antenna has been designed, optimized, and analyzed using an efficient electromagnetic solver based on the moment method. …”
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Synthesis of Novel Derivatives of Carbazole-Thiophene, Their Electronic Properties, and Computational Studies by E. F. Damit, N. Nordin, A. Ariffin, K. Sulaiman

“…Carbazole connecting with thiophenes at the 3,6-positions and the phenyl group as a core group leads to increased stabilization of HOMO and LUMO energy levels where the bandgap (ΔE) is significantly reduced.…”
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Henna (Lawsonia inermis L.) Dye-Sensitized Nanocrystalline Titania Solar Cell by Khalil Ebrahim Jasim, Shawqi Al-Dallal, Awatif M. Hassan

“…The NDSSC acts as a green energy generator in which dyes molecules adsorbed to nanocrystalline layer of wide bandgap semiconductor material harvest photons. In this paper we investigate the structural, optical, electrical, and photovoltaic characterization of two types of natural dyes, namely, the Bahraini Henna and the Yemeni Henna, extracted using the Soxhlet extractor. …”
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Photocatalytic Behavior of Supported Copper Double Salt: The Role of Graphene Oxide by Marjan E. Shabestari, Juan Baselga, Olga Martin

“…Diffuse reflectance spectroscopy with the use of Kubelka-Munk function allowed to measure bandgap energies. It was found that the absorption edge was reduced about 30% for the supported systems.…”
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Methylammonium-free, high-efficiency, and stable all-perovskite tandem solar cells enabled by multifunctional rubidium acetate by Xufeng Liao, Xuefei Jia, Weisheng Li, Xiting Lang, Jianhua Zhang, Xinyu Zhao, Yitong Ji, Qingguo Du, Chun-Hsiao Kuan, Zhiwei Ren, Wenchao Huang, Yang Bai, Kaicheng Zhang, Chuanxiao Xiao, Qianqian Lin, Yi-Bing Cheng, Jinhui Tong

“…However, high-performance APTSCs contain unstable methylammonium (MA) cation in the tin-lead (Sn-Pb) narrow bandgap subcells. Currently, MA-free Sn-Pb perovskite solar cells (PSCs) show lower performance compared with their MA-containing counterparts. …”
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First Principle Study of Structural, Electronic, Optical, and Thermodynamic Properties of Scandium-Doped Zirconia Zr1−xScxO2,x=0.125 by Lemessa Asefa Eressa, Zeleke Deressa Gerbi

“…The results of electronic property calculation show that the incorporation of scandium (Sc3+) in ZrO2 has reduced its bandgap due to the formation of scandium 3d states in the conduction band. …”
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Parametric study of quarter-wave resonators for sound-proofing building structures by Idrissi Majid, Lemkalli Brahim, Mir Abdellah, Bouzid Abdenbi, Achaoui Younes

“…The optimization process yielded significant results, achieving an attenuation of approximately -87 dB with a bandgap width of 82%, surpassing the -72.55 dB attenuation provided by the mass law of the brick alone. …”
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Miniaturized Wide Scanning Angle Phased Array Using EBG Structure for 5G Applications by Xiumei Shen, Kun Xue, Xinggang Tang, Yuqi He

“…A subarray of two closely packed patch antennas on electromagnetic bandgap structure (EBG) ground with the operating bandwidth of 26–29 GHz is used as the basic module of the linear array, which contains four equally spaced subarrays. …”
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Influence of Excitation Frequency on Raman Modes of Thin Films by A. Dixit, J. S. Thakur, V. M. Naik, R. Naik

“…For those alloys whose bandgap energy is close to the red laser, a huge enhancement in the intensities of A1(LO) mode and its 2A1(LO) replica is observed when excited with red laser as compared to the green laser excitation. …”
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Optimization of Photonic Nanocrystals for Invisibility Using Artificial Intelligence by Z. Dorrani

“…These structures facilitate directing electromagnetic waves in specific directions and making objects invisible by creating a bandgap. Photonic crystals, as microscopic structures with unique optical properties, are used in the design of invisibility systems. …”
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Synthesis, Microstructure, Photocatalytic and Antibacterial Properties of ZnO-ZrO2 Nanocomposite by Jingjun YUAN, Xin YAO

“…The optical studies showed a sharp absorption at about 400 nm and the Tauc plot evaluated the bandgap of 3.15 eV. The photodegradation performance of Methylene Blue (MB) dye was obtained for ZnO-ZrO2 NC using visible light irradiation and showed 96.89 % efficiency. …”
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Surface Modifications of Layered Perovskite Oxysulfide Photocatalyst Y2Ti2O5S2 to Enhance Visible‐Light‐Driven Water Splitting by Xizhuang Liang, Junie Jhon M. Vequizo, Lihua Lin, Xiaoping Tao, Qiulian Zhu, Mamiko Nakabayashi, Daling Lu, Hiroaki Yoshida, Akira Yamakata, Takashi Hisatomi, Tsuyoshi Takata, Kazunari Domen

“…This work provides insights into precise surface modifications of narrow‐bandgap photocatalysts as a means of improving the solar water splitting process.…”
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Sensitivity of photovoltaic cells efficiency to initial conditions in various aggregation designs by Baharak Mohamad Jafari Navadel, Esfandyar Faizi, Baharam Ahansaz, Jaber Jahanbin Sardroodi

“…Interestingly it is observed that characterizing aggregation-induced properties and quantum effects of bandgap engineering can increase the power enhancement up to 35.87% compared with classical counterparts. …”
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Atomic-scale intercalation and defect engineering for enhanced magnetism and optoelectronic properties in atomically thin GeS by Anthony C. Iloanya, Srihari M. Kastuar, Gour Jana, Chinedu E. Ekuma

“…Specifically, we observe enhanced absorption in the range of $$\sim$$  0.21 to 3.5 eV, including absorption below the bandgap threshold as the vacancy concentration is tuned between 1 and 5%. …”
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Optical signatures of lattice strain in chemically doped colloidal quantum wells by Junhong Yu, Hilmi Volkan Demir, Manoj Sharma

“…Here, we show that coherent acoustic phonons (CAPs) following bandgap optical excitations in Cu-doped CdSe colloidal quantum wells (CQWs) offer a unique platform for indirectly measuring the dopant-induced lattice strain. …”
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Long Wavelength Plasmonic Absorption Enhancement in Silicon Using Optical Lithography Compatible Core-Shell-Type Nanowires by Mohammed Shahriar Sabuktagin, Khairus Syifa Hamdan, Khaulah Sulaiman, Rozalina Zakaria, Harith Ahmad

“…However this absorption was significantly smaller than the Ohmic loss in the silver shell due to very low near-bandgap absorption properties of silicon. Prospect of improving enhanced absorption in silicon to Ohmic loss ratio by utilizing dual capability of these nanowires in boosting impurity photovoltaic effect and efficient extraction of the photogenerated carriers was discussed. …”
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