Large exciton binding energy in a bulk van der Waals magnet from quasi-1D electronic localization by Shane Smolenski, Ming Wen, Qiuyang Li, Eoghan Downey, Adam Alfrey, Wenhao Liu, Aswin L. N. Kondusamy, Aaron Bostwick, Chris Jozwiak, Eli Rotenberg, Liuyan Zhao, Hui Deng, Bing Lv, Dominika Zgid, Emanuel Gull, Na Hyun Jo

“…Furthermore, we report that surface doping enables broad tunability of the band gap offering promise for engineering of the optical and electronic properties. …”
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Phytogenic Synthesis and Characterization of NiO-ZnO Nanocomposite for the Photodegradation of Brilliant Green and 4-Nitrophenol by Sirajul Haq, Aqsa Waheed Raja, Sadiq Ur Rehman, Amine Mezni, Manel Ben Ali, Amor Hedfi, Muhammad Imran Shahzad, Wajid Rehman, Nadia Shahzad, Muhammad Waseem, Pervaiz Ahmad

“…By using diffuse reflectance data (DRS), band gap energy calculated via Tauc plot was 3.23 eV. …”
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The effect of annealing on the structural, optical, electrical and photoelectric properties of ZnO/NiO heterostructures by M. Yermakov, R. Pshenychnyi, A. Opanasyuk, Yu. Gnatenko, P. Bukivskij, A. Bukivskii, O. Кlymov, V. Muñoz-Sanjosé, R. Gamernyk

“…Low-temperature photoluminescence (PL), as well as absorption and photoconductivity, were studied to establish the optical properties, the nature of electronic optical transitions, the energy level position of the different defects present in the samples, and the effect of temperature annealing on these properties The band gap of the compounds was determined using the Tauc approximation and the first derivative of the absorption coefficient. …”
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Studies on Characterization, Optical Absorption, and Photoluminescence of Yttrium Doped ZnS Nanoparticles by Ranganaik Viswanath, Halehatty Seethya Bhojya Naik, Yashavanth Kumar Gubbihally Somalanaik, Prashanth Kumar Parlesed Neelanjeneallu, Khandugadahalli Nagarajappa Harish, Mustur Channabasappa Prabhakara

“…The UV-visible spectra of ZnS and ZnS:Y nanoparticles showed a band gap energy value, 3.85 eV and 3.73 eV, which corresponds to a semiconductor material. …”
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Profiling the Properties of SILAR Synthesized MnSe Films as Potential Material for Absorber Layer of Thin Film Solar Cells by Asielue O Kingsley, Opene J Nkechi, Okoli N Livinus

“…Transmittance varied from 12.53% to 92.17%, decreasing with higher TEA concentrations. The energy band gap of the films decreased from 2.90 eV with 2 ml of TEA to 2.30 eV with 10 ml, highlighting the tunability of MnSe for photovoltaic applications. …”
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Microstructural and Optical Characterization of Heterostructures of ZnS/CdS and CdS/ZnS Synthesized by Chemical Bath Deposition Method by Temesgen Geremew, Tizazu Abza

“…The optical analysis results confirmed single band gap values of 2.75 eV and 2.5 eV for ZnS/CdS and CdS/ZnS heterojunction thin films, respectively. …”
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Preparation of p-type Fe2O3 nanoarray and its performance as photocathode for photoelectrochemical water splitting by Xiaoli Fan, Fei Zhu, Zeyi Wang, Xi Wang, Yi Zou, Bin Gao, Li Song, Jianping He, Tao Wang

“…The analysis results indicate that the Fe2O3 exhibits a spindle shaped nanoarray structure and possesses a small band gap, thereby demonstrating excellent photoelectrochemical performance as a photocathode with photocurrent density of −23 μA cm−2 at 0.4 V vs. …”
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Structural, elastic, electronic, magnetic and thermal properties of X3FeO4 (X = mg, ca and Sr) materials by Mohammed El Amine Monir, Abdelkarim Bendoukha Reguig, M. A. Ghebouli, K. Bouferrache, Faisal Katib Alanazi, M. Fatmi, H. Bouandas

“…The electronic characteristics calculated using the GGA and GGA + U approaches prove that all these compounds are semi-metallic with a wide band gap (EHM) and a high Curie temperature (TC). Furthermore, the magnetic moments of the studied compounds are calculated in order to claim their half-metallicity behavior. …”
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Structural, Electronic, Elastic, Mechanical, and Opto-Electronic Properties for ZnAg2SnS4 and ZnAg2Sn0.93Fe0.07S4 Photocatalyst Effort on Wastewater Treatment through the First Pri... by Mohammad Jahidul Islam, Md. Sabbir Hasan Sohag, Unesco Chakma, Ajoy Kumer, Md. Monsur Alam, Mohammed Nazrul Islam Khan

“…When the Ge (ZnAg2GeS4) atom has been swapped out by a Sn (ZnAg2SnS4) atom, the changes in band gap is noticeable, which rises from 0.94 eV to 1.15 eV with the same geometry and surface area. …”
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Visible light photocatalytic efficiency and corrosion resistance of Zn, Ni, and Cu-doped TiO2 coatings by Mona Khalaghi, Masoud Atapour, Mohamad Mohsen Momeni, Mohammad Reza Karampoor

“…The Cu, Ni, and Zn doping coatings show increased visible light absorption, with the band gap decreasing from 3.05 to 2.3, 2.8, and 2.85 eV, respectively. …”
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Investigation of Structural, Magnetic, and Optical Properties of ZnO Codoped with Co and Cd by Lubna Mustafa, Safia Anjum, Salma Waseem, Rehana Zia, Rameesha Choudhry, Shahid M. Ramay, Asif Mahmood, Shahid Atiq, Salah Ud-Din Khan

“…UV-VIS spectrophotometer is used to study the optical properties, which shows that band gap energy decreases with the increase in Cd concentration. …”
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Preparation and Photocatalytic Performances of WO3/TiO2 Composite Nanofibers by Xiuping Han, Binghua Yao, Keying Li, Wenjing Zhu, Xuyuan Zhang

“…Also, the enhanced photocatalytic mechanism was also proposed based on the detailed analysis of the band gap and the active species trapping experiment. …”
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Predicted thermodynamic structural and elastic properties of SrCuP and SrCuSb for thermoelectric applications by N. Bioud, N. Benchiheub, A. Benamrani, M. A. Ghebouli, M. Fatmi, Faisal Katib Alanazi, R. Yekhlef

“…The absence of virtual phonon frequencies indicates high dynamic stability in both materials, with a band gap about 1 THz between optical and acoustic phonons in SrCuP and SrCuSb.…”
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Photocatalytic Degradation of Rhodamine B by C and N Codoped TiO2 Nanoparticles under Visible-Light Irradiation by Thuy Thi Thanh Le, Trinh Dinh Tran

“…C, N-TiO2 nanoparticles exhibited an energy band gap of 2.90 eV, which were lower than pristine TiO2 (3.34 eV), C-TiO2 (3.2 eV), and N-TiO2 (3.03 eV). …”
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Physical Properties of Macroporous Tungsten Oxide Thin Films and Their Impact on the Photocurrent Density by I. Riech, M. Acosta, M. A. Zambrano-Arjona, F. Peñuñuri, M. Rosado-Mendoza, E. Marín, P. Rodríguez-Fragoso, J. G. Mendoza-Álvarez

“…X-ray diffraction data and electron microscopy images show that annealed films exhibit polycrystalline structure with monoclinic phase and pore size of approximately hundred nanometers. The optical band gap energies have been determined by photoacoustic spectroscopy as 3.17 eV, and this value was not affected by sample morphology. …”
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Hydrothermal Preparation of Ag/Ag1.69Sb2.27O6.25 Sesame-Hollow-Ball-Type Nanocomposites: The Formation Mechanism of Metallic Ag in the Ag-H2O System at 400 K by Haomei Liu, Xihai Hao, Yuejun Liu, Aiguo Yan

“…The light absorption property of as-prepared materials is studied by UV-vis/DRS, and the adsorption band is located at 445 nm, and the estimated energy band gap (Eg) is 2.55 eV. The calculated partial φ-pH diagrams in the Ag-H2O system at 400 K predict that the Ag+ ion can react with H2 to form metallic Ag.…”
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Optical, X-Ray Diffraction, and Magnetic Properties of the Cobalt-Substituted Nickel Chromium Ferrites (CrCo𝑥Ni1−𝑥FeO4, 𝑥=0,0.2,0.4,0.6,0.8,1.0) Synthesized Using Sol-Gel... by Sonal Singhal, Santosh Bhukal, Jagdish Singh, Kailash Chandra, S. Bansal

“…However, the coercivity decreases with increase in cobalt concentration due to the decrease in anisotropy field. The band gap has been calculated using UV-VIS spectrophotometry and has been found to decrease with the increase of particle size.…”
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Biosynthesis of ZnO nanoparticles using banana peel pectin for antibacterial and photocatalytic applications by Kazi Suraiya Islam, Md. Hasnain Mustak, Md. Khalid Hossain Shishir, Md. Minnatul Karim, Gazi Md. Arifuzzaman Khan

“…The UV–vis analysis revealed absorption peak at 338.0 nm with an optical band gap of 3.08 eV, confirming the synthesis of p-ZnO NPs. …”
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Photocatalytic Activity under Simulated Sunlight of Bi-Modified TiO2 Thin Films Obtained by Sol Gel by D. A. Solís-Casados, L. Escobar-Alarcón, V. Alvarado-Pérez, E. Haro-Poniatowski

“…Optical measurements reveal that the band gap narrows from 3.3 eV to values as low as 2.7 eV. …”
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Cadmium Sulfide Thin Films Deposited onto MWCNT/Polysulfone Substrates by Chemical Bath Deposition by M. Moreno, G. M. Alonzo-Medina, A. I. Oliva, A. I. Oliva-Avilés

“…The values of the energy band gap, average grain size, rms roughness, crystalline structure, and preferential orientation of the CdS films deposited onto the polymeric substrate were very similar to the corresponding values of the CdS deposited onto glass (conventional substrate). …”
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