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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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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CTAB-Assisted Hydrothermal Synthesis of Bi2Sn2O7 Photocatalyst and Its Highly Efficient Degradation of Organic Dye under Visible-Light Irradiation by Weicheng Xu, Zhang Liu, Jianzhang Fang, Guangyin Zhou, Xiaoting Hong, Shuxing Wu, Ximiao Zhu, YunFang Chen, Chaoping Cen

“…Close investigation revealed that the size, the band gap, the structure, and the existence of impurity level played an important role in the photocatalytic activities.…”
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Effects of Vacancy Cluster Defects on Electrical and Thermodynamic Properties of Silicon Crystals by Pei-Hsing Huang, Chi-Ming Lu

“…Simulation results showed that various VC defects changed the energy band and localized electron density distribution of Si crystals and caused the band gap to decrease with increasing VC size. The results can be ascribed to the formation of a defect level produced by the dangling bonds, floating bonds, or high-strain atoms surrounding the VC defects. …”
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Effect of Nitrogen-Doped Carbon Dots (NCDs) on the Characteristics of NCD/MIL-53(Fe) Composite and Its Photocatalytic Performance for Methylene Blue Degradation under Visible Light by Ngoc Tue Nguyen, Xuan Truong Nguyen, Duc-Trung Nguyen, Hong Minh Tran, Thi May Nguyen, Thuong Quang Tran

“…Compared with pristine MIL-53(Fe), the M-140 was more visibly light-responsive, and its calculated band gap energy was approximately 2.3 eV. In addition, M-140 catalyst also displayed more excellent photocatalytic activity for Methylene Blue degradation in a pH range from 5 to 7. …”
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Process-Parameter-Dependent Structural, Electrical, and Optical Properties of Reactive Magnetron Sputtered Ag-Cu-O Films by P. Narayana Reddy, A. Sreedhar, M. Hari Prasad Reddy, S. Uthanna, J. F. Pierson

“…The electrical resistivity of the films decreased from 0.8 Ωcm with the increase of substrate temperature from 303 to 473 K due to improvement in the crystallinity of the phase. The optical band gap of the Ag-Cu-O films increased from 1.47 to 1.83 eV with the increase of substrate temperature from 303 to 473 K.…”
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First-principles study of structural, elastic, electronic, transport properties, and dielectric breakdown of Cs2Te photocathode by Gaoxue Wang, Jinlin Zhang, Chengkun Huang, Dimitre A. Dimitrov, Anna Alexander, Evgenya I. Simakov

“…Cesium telluride (Cs2Te) is a widely used photocathode material and it is presumed to offer resilience to higher gradients because of its wider band gap compared to other semiconductors. Despite its advantages, crucial material properties of Cs2Te remain largely unknown both in theory and experiments. …”
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Exploring Spray-Coating Techniques for Organic Solar Cell Applications by Wanyi Nie, Robert Coffin, Jiwen Liu, Christopher M. MacNeill, Yuan Li, Ronald E. Noftle, David L. Carroll

“…Using airbrush fabrication, bulk heterojunction photovoltaic devices based on a new low band gap donor material: poly[(4,8-bis(1-pentylhexyloxy)benzo[1,2-b:4,5-b′]dithiophene-2,6-diyl-alt-2,1,3-benzoxadiazole-4,7-diyl] with the C60-derivative (6,6)-phenyl C61-butyric acid methyl ester (PCBM) as an acceptor, have achieved power conversion efficiencies over 3%. …”
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Preparation and Characterization of Cu2ZnSnS4 Thin Films and Solar Cells Fabricated from Quaternary Cu-Zn-Sn-S Target by Min Xie, Daming Zhuang, Ming Zhao, Zuolong Zhuang, Liangqi Ouyang, Xiaolong Li, Jun Song

“…A sulfurization process can obviously improve the crystallinity of CZTS and films with grain size of several hundred nanometers can be obtained after sulfurization. The optical band gap of the films is estimated to be 1.57 eV. The electrical properties of the 4.04% efficient solar cell were investigated and it has been found that cell has obvious deficiency in minority carrier lifetime. …”
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Recent Advances in Heterogeneous Photocatalytic Decolorization of Synthetic Dyes by Nurhidayatullaili Muhd Julkapli, Samira Bagheri, Sharifah Bee Abd Hamid

“…Semiconductor metal oxides, typically TiO2, ZnO, SnO, NiO, Cu2O, Fe3O4, and also CdS have been utilized as photocatalyst for their nontoxic nature, high photosensitivity, wide band gap and high stability. Various process parameters like photocatalyst dose, pH and initial dye concentrations have been varied and highlighted. …”
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Doping of rare earth element: The effects in elevated physical and optical properties of ZnO by Uji Pratomo, Natasha Fransisca, Muchammad Dhuhri Adzani, Irkham Irkham, Allyn Pramudya Sulaeman, Diana Rakhmawaty Eddy, Jacob Yan Mulyana, Indah Primadona

“…Zinc oxide (ZnO) serves as a highly adaptable semiconductor with a crucial role in various applications because of its crystal structure compatibility and significant band gap. Fabricating ZnO nanomaterials with tailored characteristics has become a prevalent and current focus. …”
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Effect of N,C-ITO on Composite N,C-Ti/N,C-ITO/ITO Electrode Used for Photoelectrochemical Degradation of Aqueous Pollutant with Simultaneous Hydrogen Production by Kee-Rong Wu, Chung-Hsuang Hung, Chung-Wei Yeh, Chien-Chung Wang, Jiing-Kae Wu

“…In light of the X-ray photoelectron spectroscopy findings, these results are attributable partly to the synergetic effect of N,C-codoping into the TiO2 and ITO lattices on their band gap narrowing and photosensitizing as well. Thus, the Ti/TO electrode can potentially serve an efficient PEC electrode for simultaneous pollutant degradation and hydrogen production.…”
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