Characterization of Cobalt Sulfide Thin Films Synthesized from Acidic Chemical Baths by Tizazu Abza, Dereje Gelanu Dadi, Fekadu Gashaw Hone, Tesfaye Chebelew Meharu, Gebremeskel Tekle, Eyobe Belew Abebe, Kalid Seid Ahmed

“…The scanning electron microscopic images revealed crack and pinhole free thin films with uniform and smooth background and few large polygonal grains on the surface. The band gap of the cobalt sulfide thin films decreased from 1.75 eV to 1.3 eV as the deposition time increased from 2 hrs to 3.5 hrs. …”
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Annealing-Induced Modifications in Physicochemical and Optoelectronic Properties of Ag-Doped Nanostructured CdS Thin Films by Vidya S. Taur, Rajesh A. Joshi, Ramphal Sharma

“…Red shift in optical absorbance strength and energy band gap values from 2.28 to 2.14 eV is obtained. I-V response obtained from as grown and annealed thin films shows an enhancement in photosensitivity from 72% to 96% upon illumination to 100 mW/cm2 light source.…”
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Structural and Optical Properties of Amorphous Al2O3 Thin Film Deposited by Atomic Layer Deposition by Shuzheng Shi, Shuo Qian, Xiaojuan Hou, Jiliang Mu, Jian He, Xiujian Chou

“…It is found that the band gap exhibits a steady value ~2.3 eV by the UV-VIS transmittance method, but the T-L model was ~3.0 eV. …”
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Investigations on the synthesis and characterization of silver-doped MoO3 thin films for photocatalytic applications by Olfa Kamoun, Anis Akkari, Badriyah Alhalaili, Ruxandra Vidu, Najoua Turki-Kamoun

“…Optimal crystallinity was observed with 2% Ag doping, yielding an 84 nm crystallite size, while higher doping levels reduced crystallite size. Band gap energy narrowed from 3.07 eV (undoped) to 2.94 eV (2% Ag-doped), indicating electronic structure changes. …”
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A Versatile Switched-Mode Large-Signal GaN-Based Low-Distortion Arbitrary Waveform Generator by Ignacio Alvarez-Gariburo, Hector Sarnago, Jose M. Burdio, Oscar Lucia

“…The design will take advantage of wide band gap devices to be able to switch in the MHz range to achieve a high bandwidth. …”
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In situ synthesis of ZnO/g-C3N4 based composites for photodegradation of methylene blue under visible light by S. Pourali, R. Amrollahi, S. Alamolhoda, S. M. Masoudpanah

“…As the g-C3N4 content increased, the band gap decreased from 3.02 to 2.94 eV. Additionally, the reduction in photoluminescence intensity confirmed the heterojunction interface between the g-C3N4 and ZnO components. …”
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Photocatalytic Bactericidal Efficiency of Ag Doped TiO2/Fe3O4 on Fish Pathogens under Visible Light by Ekkachai Kanchanatip, Nurak Grisdanurak, Naichia Yeh, Ta Chih Cheng

“…The Ag-TiO2/Fe3O4 prepared in this study displays significantly enhanced visible light absorption and narrowed band gap energy. The magnetic property of Ag-TiO2/Fe3O4 made it easy for retrieval using a permanent magnet bar. …”
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Mechanochemical Synthesis of Visible Light Sensitive Titanium Dioxide Photocatalyst by Jan Šubrt, Jose M. Criado, Lórant Szatmáry, Maria J. Diánez-Millán, Nataliya Murafa, Luis A. Pérez-Maqueda, Vlasta Brezová

“…The UV-visible absorption spectrum showed narrowing the band gap width after grinding with an ammonium carbamate additive resulting in shift of the light absorption of the ground sample towards the visible region. …”
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Enhanced Visible Light Photocatalytic Activity for TiO2 Nanotube Array Films by Codoping with Tungsten and Nitrogen by Min Zhang, Juan Wu, DanDan Lu, Jianjun Yang

“…The mechanism of the enhanced photocatalytic activity could be attributed to (i) increasing number of hydroxyl groups on the surface of TNAs after the hydrothermal treatment, (ii) a strong W-N synergistic interaction leads to produce new states, narrow the band gap which decrease the recombination effectively, and then greatly increase the visible light absorption and photocatalytic activity; (iii) W ions with changing valences in all codoped samples which are considered to act as trapping sites, effectively decrease the recombination rate of electrons and holes, and improve the photocatalytic activity.…”
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Exploring the twin potential of nanostructured TiO2:SeO2 as a promising visible light photocatalyst and selective fluorosensing platform by Aarti Sharma, Nidhi Sharotri, Pankaj Kandwal, Rakesh Kumar Sharma, Dhiraj Sud, Ritu Rai, Anna Hnydiuk-Stefan

“…The obtained nanostructure consists of uniform globular nanoparticles having approximate size of 170 nm and possess an optical band gap of 2.33 eV with absorption maxima at 473 nm. …”
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Effect of Different Deposition Power of In2O3 Target on the Characteristics of IGZO Thin Films Using the Cosputtering Method by Shang-Chao Hung, Kin-Tak Lam, Cheng-Fu Yang, Yu-Jhen Liou

“…The value variations in the optical band gap (Eg) values of the IGZO thin film were evaluated from the plots of (αhν)2=c(hν-Eg). …”
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Synthesis of MgAl2O4: Sm3+ Nanophosphor and Its Photoluminescence, Electrochemical Sensing, and Photocatalytic Studies by S. N. Manjula, M. Chandrasekhar, M. R. Anil Kumar, Mir Waqas Alam, C. R. Ravikumar, H. C. Ananda Murthy, N. Basavaraju, H. Nagabhushana

“…The X-ray diffraction studies revealed a crystallite size of 20 nm for the nanophosphors. The energy band gap values were found to be in the range from 4.86 to 5.42 eV. …”
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Performance Study of Ultraviolet AlGaN/GaN Light-Emitting Diodes Based on Superlattice Tunneling Junction by Zhuang Zhao, Yang Liu, Peixian Li, Xiaowei Zhou, Bo Yang, Yingru Xiang, Junchun Bai

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Optical Properties of One-Dimensional Structured GaN:Mn Fabricated by a Chemical Vapor Deposition Method by Sang-Wook Ui, In-Seok Choi, Sung-Churl Choi

“…Group III nitride semiconductors with direct band gaps have recently become increasingly important in optoelectronics and microelectronics applications due to their direct band gaps, which cover the whole visible spectrum and a large part of the UV range. …”
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Characterization of ZnO Nanoparticles Pineapple Skin Extract (Ananas comosus L.) as Photocatalytic Activity by Lydia Rohmawati, Lytha Lailia, Nugrahani Putri, Munasir Nasir, Darminto Darminto

“…ZnO nanoparticles had a particle size of 20.04 nm, a spherical shape, and a band gap energy of 3.28 eV. The Raman active mode E2(High) at 439.05 cm-1 confirmed the formation of pure phase wurtzite. …”
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Phase Transition and Optical Properties for Ultrathin KNbO3 Nanowires by Shulin Yang, Yongming Hu, Shengfu Wang, Haoshuang Gu, Yu Wang

“…The as-prepared KNbO3 nanowires exhibit three phase transitions at about 343, 454.7, and 623 K as the temperature increases from 250 to 700 K. The band gap is about 3.78 eV for KNbO3 nanowires. Photoluminescence study at room temperature reveals two visible light emission bands peaking at ~551 and 597 nm, respectively, which may be due to the oxygen vacancies, site niobium (occupy the location of Nb), and antisite niobium (occupy the location of K) in KNbO3 nanowires.…”
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An Enhanced Plane Wave Expansion Method to Solve Piezoelectric Phononic Crystal with Resonant Shunting Circuits by Ziyang Lian, Shan Jiang, Hongping Hu, Longxiang Dai, Xuedong Chen, Wei Jiang

“…The resonant shunting circuits can not only bring about the locally resonant (LR) band gap for the PPC-C but also conveniently tune frequency and bandwidth of band gaps through adjusting circuit parameters. …”
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Structural, morphological and biological assessment of magnetic hydroxyapatite with superior hyperthermia potential for orthopedic applications by Smrithi Saroj, U. Vijayalakshmi

“…The UV–Vis spectra confirmed the reduction in the band gap energies owing to the substitution of iron. …”
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A Comparative Study of Coprecipitation and Solvothermal Techniques for Synthesizing Pure and Cu-Doped SnO2 Nanoparticles by Chnar I. Hussain, Yousif M. Hassan, Farah A. Abed

“…When we doped SnO2 with 4% Cu, this band gap energy decreased to 3.75 eV and 3.9 eV. Furthermore, with 4% Cu doping, the particle size decreases, as demonstrated by FESEM. …”
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One-Pot Synthesis of W-TiO2/SiO2 Catalysts for the Photodegradation of p-Nitrophenol by Ulises Arellano Sánchez, Lifang Chen, Jin An Wang, Luis Enrique Noreña, Maximiliano Asomoza, Silvia Solis, Xiaolong Zhou, Yueqin Song, Jing Liu

“…Doping with W shifts the TiO2 band gap energy from 3.2 eV to around 3.06 eV. The surface area of the supported W-TiO2/SiO2 material was significantly increased, by approximately 3 times, in comparison to the bare TiO2. …”
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