Investigating How Cu Addition Affects the Gas Sensing, Electrical, Optical and Structural Properties of ZnO Nanoparticles by Fatemeh Moosavi, Giovanni Neri

“…The UV-vis spectroscopy exhibited a red shift in the absorption edge, indicating that the band gap energy decreased from 3.37 to 3.26 eV with Cu doping. …”
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SnO2 Layer Treatment with Thioacetamide in Perovskite Solar Cell by Fatemeh Ghasemi, Razieh Keshtmand, Nima Taghavinia

“…SnO2 stands out as an exemplary electron transport layer for perovskite solar cells due to its exceptional carrier mobility, deep conduction band, suitable band gap, and compatibility with low-temperature processing. …”
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A Quad-Element UWB-MIMO Antenna with Band-Notch and Reduced Mutual Coupling Based on EBG Structures by Wenjing Wu, Bo Yuan, Aiting Wu

“…The antenna consists of four circular monopoles with modified defected ground plane and a periodic electromagnetic band gap (EBG) structures. The proposed EBG structures are modified from the traditional mushroom-like ones, comprised of patterns of grids on the top patch, the metallic ground plane, and several vias that connect the top and bottom plane. …”
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Structural, Morphological, Optical, and Antibacterial Activities of Zinc Oxide Nanopowders: A Comparative Study of Green and Soft Chemical Synthesis by K. Catherine Siriya Pushpa, P. Sakthivel, K. Saravanakumar, N. Anuradha, R. K. Sankaranarayanan, Mosae Selvakumar Paulraj

“…UV-vis-DRS spectroscopy was used to investigate optical properties such as reflectance and band gap. The grain size of the G-ZnO nanopowders was decreased, and oxygen vacancy was produced. …”
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Preparation of N-Doped TiO2-ZrO2 Composite Films under Electric Field and Heat Treatment and Assessment of Their Removal of Methylene Blue from Solution by Lefu Mei, Ranfang Zuo, Jing Xie, Libing Liao, Hao Ding

“…The partial replacement of O by doped N played a very important role in narrowing the band gap and improving the visible light photocatalytic reactivity.…”
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Analysis of Structural, Optical, and Aquaphobic Properties of Zirconium Oxide Nanofilms by Varying Sputtering Gas by Kumar Sujit, Dave Vikramaditya, K. Vetri Velmurugan, Yakkala Bhaskarrao, Rupali Singh, Bhasker Pant, Amit Kumar Sharma, Hari Kumar Singh, Lijalem Mulugeta

“…The transmittance and band gap were also found to be 90% and 5.33 eV, respectively, at this particular ratio.…”
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Enhanced Solar Photoelectrochemical Conversion Efficiency of ZnO:Cu Electrodes for Water-Splitting Application by Rekha Dom, Lijin Rose Baby, Hyun Gyu Kim, Pramod H. Borse

“…This performance is attributed to the red shift in the band gap of the Cu-doped films and is in accordance with the incident-photon-current-conversion efficiency (IPCE) measurements. …”
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Influence of bismuth substitution on structural and optical properties of CuFe2-xBixO4 spinel structure by Hamid Hamrah, Ahmad Gholizadeh

“…The tunability of structural and optical properties was achieved through controlled Bi substitution, with optical band gap energy increasing due to local distortions from Bi3+ ions in the CuFe2O4 lattice. …”
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Room Temperature NO₂-Sensing Properties of N-Doped ZnO Nanoparticles Activated by UV-Vis Light by Angelo Ferlazzo, Giovanni Neri, Andrea Donato, Giovanni Gugliandolo, Mariangela Latino

“…These improvements in gas-sensing capabilities are attributed to the reduction in particle size and the narrowing of the optical band gap.…”
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Measuring transducers for optical diagnostic system with multifunctional unitary photovoltaic converters by R. I. Vorobei, O. K. Gusev, A. I. Svistun, A. K. Tyavlovsky, K. L. Tyavlovsky, L. I. Shadurskaya

“…The paper aims at the development of new measuring transducers for optical diagnostic system on a basis of multifunctional unitary photovoltaic converters built on semiconductors with low-concentration deep dopants that form multiple energy levels for different charge states in the band gap. Relative complexity of physical processes accompanying the recharge of several energy levels of multiply-charged deep dopant makes it possible to realize the multifunctionality of a photoelectric converter albeit simple sensor design.The proposed unitary photovoltaic converters proved to have extended functional characteristics and increased ranges of energetic characteristic (by dozens dB) and spectral sensitivity characteristic with possible shifts of red margin by 2 to 4 μm in the spectral sensitivity range of 1–10 μm. …”
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SO2 sensing performance of silicon substitutional doped (8,0) carbon nanotube: A density functional theory study by Poonam Parkar, Ajay Chaudhari, Mahadev Rangnath Sonawane, Balasaheb Jijaba Nagare

“…Silicon doping maintains the semiconducting nature of pristine carbon nanotubes, with a slight reduction in the band gap from 0.61 eV to 0.54 eV. Moreover, the minimum energy path for SO₂ adsorption on Si-CNTs reveals a chemisorptive process, with an adsorption energy of -1.66 eV, signifying an exothermic reaction where the binding energy of the product exceeds that of the reactants. …”
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UV Filtering of Dye-Sensitized Solar Cells: The Effects of Varying the UV Cut-Off upon Cell Performance and Incident Photon-to-Electron Conversion Efficiency by Matthew Carnie, Trystan Watson, David Worsley

“…From the results presented it can be estimated that filtering at a level intended to prevent direct band gap excitation of the TiO2 semiconductor should cause a relative drop in cell efficiency of no more than 10% in forward illuminated devices and no more than 2% in reverse illuminated devices.…”
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EBG Based Microstrip Patch Antenna for Brain Tumor Detection via Scattering Parameters in Microwave Imaging System by Reefat Inum, Md. Masud Rana, Kamrun Nahar Shushama, Md. Anwarul Quader

“…A compact and efficient microstrip patch antenna is used in the imaging technique to transmit equivalent signal and receive backscattering signal from the stratified human head model. Electromagnetic band gap (EBG) structure is incorporated on the antenna ground plane to enhance the performance. …”
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Characterization of WO3 Thin Films Grown on Silicon by HFMOD by Joel Díaz-Reyes, Roberto Castillo-Ojeda, Miguel Galván-Arellano, Orlando Zaca-Moran

“…By Raman scattering is confirmed the change of crystalline phase, of monoclinic to triclinic, since that lattice vibrational modes of as-deposited WO3 and annealed at 500°C present clearly differences. WO3 band gap energy can be varied from 2.92 to 3.15 eV by annealing WO3 from 0 to 500°C as was obtained by transmittance measurements. …”
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Curcumin Is an Iconic Ligand for Detecting Environmental Pollutants by T. Devasena, N. Balasubramanian, Natarajan Muninathan, Kuppusamy Baskaran, Shani T. John

“…Organic ligands are capable of increasing the adsorption efficacy, optical properties, and electrochemical properties of nanomaterials by reducing or splitting of band gap. Curcumin (diferuloylmethane) is a natural organic ligand that exhibits inherent fluorescence and electrocatalytic property. …”
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A Wideband and Polarization-Independent Metasurface Based on Phase Optimization for Monostatic and Bistatic Radar Cross Section Reduction by Jianxun Su, Yao Lu, Zengrui Li, Rongrong Zhang, Yaoqing (Lamar) Yang

“…Metasurfaces are composed of two types of electromagnetic band-gap (EBG) lattice, which is a subarray with “0” or “π” phase responses, arranged in periodic and aperiodic fashions. …”
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One-Dimensional Nanostructured TiO2 for Photocatalytic Degradation of Organic Pollutants in Wastewater by Ting Feng, Gen Sheng Feng, Lei Yan, Jia Hong Pan

“…This phenomenon can be explained by the suppression of e−-h+ pairs recombination rate, increased specific surface area, and reduction of band gap. In addition, 1D nanostructured TiO2 can be further constructed as a film or membrane, which may extend its practical applications.…”
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Experimental Characterization, Computational Investigation, and Structure-propertyeactivity Relationship Studies of Nickel Ferrite Nanostructures by Ali Ben Ahmed

“…UV-visible spectroscopy measures the absorbance of ultraviolet or visible light by a material, which can give insight into its electronic structure, band gap, and optical properties. These analyses confirmed the formation of single-phase nickel ferrite nanoparticles in the range 8e14 nm. …”
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Green synthesis, characterization, photocatalytic and antibacterial activities of copper oxide nanoparticles of copper oxide nanoparticles by Saeid Taghavi Fardood, Ferzaneh Moradnia, Siamak Heidarzadeh, Ali Naghipour

“…The particle size was determined using the TEM technique to be roughly 25 nm. The optical band gap of CuO nanoparticles was calculated using the Tauc relation from the absorption spectra and was determined to be about 2.04 eV. …”
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Detailed Spectroscopic and Structural Analysis of TiO2/WO3 Composite Semiconductors by Biborka Boga, István Székely, Zsolt Pap, Lucian Baia, Monica Baia

“…All spectroscopic characteristics of the composites and their derived data (band-gap energy value, light absorption threshold, and IR specific bands) directly varied with the increase of the WO3 content. …”
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