Photocatalytic Properties of Tin Oxide and Antimony-Doped Tin Oxide Nanoparticles by J. C. M. Brokken-Zijp, O. L. J. van Asselen, W. E. Kleinjan, R. van de Belt, G. de With

“…The results are explained by describing the effects of Sb-doping, N-doping, and/or methacrylate surface grafting on the band gaps, energy level distributions, and surface group reactivities of these nanoparticles. …”
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Impact on Structural and Optical Properties of CZTS Thin Films with Solvents and Ge Incorporation by Abhay Kumar Singh, Tanka R. Rana, JunHo Kim, M. Shkir, Tien-Chien Jen

“…Moreover, the gradual changes have also appeared in their X-ray diffractometer (XRD) and Raman spectroscopic results. The optical energy band gaps of the CZTS, CZGTS, and their PVA, DMSO mixed alloyed thin films are obtained in between 1.27 eV to 1.57 eV and 1.58 eV to 1.83 eV.…”
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Cluster sliding ferroelectricity in trilayer Quasi-Hexagonal C60 by Xuefei Wang, Yanhan Ren, Shi Qiu, Fan Zhang, Xueao Li, Junfeng Gao, Weiwei Gao, Jijun Zhao

“…Compared to many metallic or semi-metallic elemental ferroelectrics, trilayer qHP C60’s have sizable band gaps and several ferroelectric structures, which are distinguishable by measuring their second-harmonic generation (SHG) responses. …”
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Computational insights into spin-polarized density functional theory applied to actinide-based perovskites XBkO₃ (X = Sr, Ra, Pb) by Youssef Didi, Mounir Belhajji, Soufiane Bahhar, Abdellah Tahiri, Mohamed Naji, Abdelilah Rjeb, Hatim G. Zaini, Aymen Flah, Sherif S. M. Ghoneim, Ahmed B. Abou Sharaf, Mofreh A. Hashim

“…The results show semiconductor behavior, with respective band gaps of 1.320 eV for PbBkO3, 3.415 eV for RaBkO3, and 2.775 eV for SrBkO3. …”
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Unlocking the potential of azide-phosphine Staudinger reaction for the synthesis of poly(arylene iminophosphorane)s and materials therefrom by Tomaž Kotnik, Antoine Debuigne, Julien De Winter, Matej Huš, Albin Pintar, Sebastijan Kovačič

“…Interestingly, despite the ylidic-form of the iminophosphorane linkage as shown by theoretical calculations, these newly developed poly(arylene-iminophosphorane) networks exhibit semiconducting properties, such as absorption band edges up to 800 nm and optical band gaps in the range of 1.70 to 2.40 eV. Finally, we demonstrate the broad applicability of these polymers by processing them into glassy films, creating foam-like structures and synthesizing metallo-polymer hybrids.…”
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Spectroscopic Analysis for Harnessing the Quality and Potential of Gemstones for Small and Medium-Sized Enterprises (SMEs) by Imtiaz Ahmad, Suhail H. Serbaya, Ali Rizwan, Malik Sajjad Mehmood

“…The higher structural disorder due to the presence of Fe and other impurities in stones except Quartz was attributed to the higher values of Urbach energies and decrease in band gaps: FTIR data Fe-O and Si-O stretching vibration in Pyrope-Almandine garnet, Si-O bending vibrations and O-H stretching vibration in Quartz, Si-O-Si bending and stretching vibrations and C=O stretching vibrations in Black tourmaline, Ca-O stretching vibrations and Si-OH weak-vibrations in Amethyst. …”
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Electronic Structure of Single-Wall Silicon Nanotubes and Silicon Nanoribbons: Helical Symmetry Treatment and Effect of Dimensionality by Pavol Baňacký, Jozef Noga, Vojtech Szöcs

“…From the calculated band structure results that, irrespective of helicity, the SWSiNTs of larger diameter are small-gap semiconductors with direct gap between the Dirac-like cones of (π*,π) bands. Gap of SWSiNTs is modulated by fold number of particular tubular rotational axis symmetry and exhibits an oscillatory-decreasing character with increase of the tube diameter. …”
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Enhancing the efficiency of hybrid Schottky diode by decoration of 2D Cs:ZnO nanosheets with CNTs via a facile co-precipitation approach by A Al-Sayed, Miad Ali Siddiq, Elsayed Elgazzar

“…The thin films showed intense optical absorption near the visible region with optical band gaps of 3.12 eV and 3.06 eV for Cs:ZnO and Cs:ZnO@CNTs nanostructures, respectively. …”
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Achieving a Near-Infrared Absorption by A−DA’D−A Type Isoindigo-Based Small Molecular Acceptors for Organic Photovoltaics by Hui Liu, Yu Wu, Dong-Nai Ye, Na Chen, Xu-Min Huang, Shi-Yong Liu

“…Both URAs, despite the absence of non-covalent conformation locking between CPDT and IID, demonstrated favorable molecular planarity, broad absorption ranges, low band gaps, and high molar absorption coefficients. …”
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The Multiple Effects of Precursors on the Properties of Polymeric Carbon Nitride by Wendong Zhang, Qin Zhang, Fan Dong, Zaiwang Zhao

“…The results showed that the as-prepared CN-T (from thiourea), CN-D (from dicyandiamide), CN-M (from melamine), and CN-U (from urea) exhibited significantly different morphologies and microstructures. The band gaps of CN-T, CN-D, CN-M, and CN-U were 2.51, 2.58, 2.56, and 2.88 eV, respectively. …”
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Preparation of Chloro Penta Amine Cobalt(III) Chloride and Study of Its Influence on the Structural and Some Optical Properties of Polyvinyl Acetate by Nada K. Abbas, Majeed Ali Habeeb, Alaa J. Kadham Algidsawi

“…The nature of electronic transition from valence band to conduction band was determined and the energy band gaps of the composite films samples were estimated by UV-visible spectrum. …”
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Enhanced Photo-Catalytic Degradation of MB Dye over Hydrothermal Grown-Up of ZnO/SnO2 Catalyst by Govinda Dharmana, Santhosh Kumar Nadikatla, Thirumala Rao Gurugubelli, Balaga Viswanadham

“…XPS analysis evidence for the presence of constitutes elements and Zn+2, Sn+2, O−2 valance states along with environmental peaks in Z-S heterostructure. The optical band gaps of ZnO (3.37 eV), SnO2 (3.6 eV), and Z-S heterostructure (2.84 eV) are inferred by UV-DRS analysis, together with evidence for the red shift. …”
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Morphological and optical characterization of spin-coated CuO nanostructured thin films doped with V, Na, Ba, and Er for enhanced CO2 sensing by Nihed Allouche, Bouzid Boudjema, Radouane Daira, Adel M. El Sayed, Khaled Abdelkarem, Inas A. Ahmed, Mohamed Shaban

“…All the films displayed a monoclinic tenorite structure, with crystallite sizes ranging from 23.8 to 59.5 nm, and band gaps that increased from 1.7 eV for pure copper oxide to 2.1 eV for copper oxide doped with vanadium (CuO:V). …”
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Effect of precursor molarities on structural correlation with optoelectronic property of Zn2SnO4 nanostructured thin films by Isha Arora, Praveen Kumar Sharma, Harkawal Singh, Vanasundaram Natarajan

“…All the samples exhibit dual band gaps on account of the having the inverse spinel structure. …”
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Photophysical and Electrochemical Studies of Multinuclear Complexes of Iron(II) with Acetate and Extended Conjugated N-Donor Ligands by Norbani Abdullah, Suhana Mohd Said, Anita Marlina, Muhamad Faris Roslan, Afiq Azil, Abdul Rahman Nordin

“…Variable-temperature magnetic susceptibility data suggested that 1 was made up of 56.8% high-spin (HS) and 43.2% low-spin (LS) Fe(II) atoms at 294 K and has a moderate antiferromagnetic interaction (J = −81.2 cm−1) between the two Fe(II) centres, while 2 was made up of 27.7% HS and 72.3% LS Fe(II) atoms at 300 K. The optical band gaps (Eo) for 1 were 1.9 eV (from absorption spectrum) and 2.2 eV (from fluorescence spectrum), electrochemical bandgap (Ee) was 0.83 eV, excited state lifetime (τ) was 0.67 ns, and formal redox potential (E′(FeIII/FeII)) was +0.63 V. …”
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First-principles investigation of half-metallic CaTGe2O6 (T = Mn, Fe, Co) clinopyroxenes: Potential for spintronics and optoelectronics applications by Tasmi Akter, Jahirul Islam, Kamal Hossain, Rabeya Akter Rabu

“…The electronic band diagram and spin-polarized PDOS of these structures confirm the half-metallic nature of all three structures. The half-metallic band gaps of CaTGe2O6 (T = Mn, Fe, Co) are 3.05, 1.69, 1.99 eV in GGA + U and 2.88, 1.52, 1.78 eV in the LDA + U method, respectively. …”
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Effect of annealing on the structural, morphological, optical, magnetic, and dielectric properties of nickel-doped cobalt nanoferrites for electronic applications by Md Shihabun Sakib, Md Naimur Rahman, Md Alamgir Hossain, Md Rashedur Rahman

“…UV spectroscopy indicated semiconductor behavior with band gaps ranging from 1.86 to 2.15 eV. Dielectric constant and losses decreased with higher annealing temperature and frequency. …”
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Constructing benzothiadiazole‐based donor‒acceptor covalent organic frameworks for efficient photocatalytic H2 evolution by Yanchang Huang, Bin Gao, Qihang Huang, De‐Li Ma, Hongwei Wu, Cheng Qian

“…Abstract Donor‒acceptor covalent organic frameworks (D‒A COFs) have been regarded as promising materials for photocatalytic water splitting because of their tunable band gaps. However, their efficiency is hindered by fast charge recombination and low photostability. …”
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Facile Synthesis of Novel Conducting Copolymers Based on N-Furfuryl Pyrrole and 3,4-Ethylenedioxythiophene with Enhanced Optoelectrochemical Performances Towards Electrochromic App... by Huixian Li, Xiaomeng Sun, Datai Liu, Xinchang Liu, Xianchao Du, Shuai Li, Xiaojing Xing, Xinfeng Cheng, Dongqin Bi, Dongfang Qiu

“…The results demonstrate that the prepared P(FuPy-<i>co</i>-EDOT) copolymers with a higher proportion of EDOT units (FuPy/EDOT: 2/8~1/9) possess good redox activity, tunable optical absorption performances, and low band gaps (1.75~1.86 eV). Spectroelectrochemistry studies indicate that the resulting copolymers with increased EDOT units show strengthened electrochromic characteristics, exhibiting a red-to-green-to-blue multicolor reversible transition, especially for the P(FuPy₁-<i>co</i>-EDOT₉) copolymer films. …”
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Enhanced photocatalytic degradation of Rhodamine B using polyaniline-coated XTiO3(X = Co, Ni) nanocomposites by Mariyem Abouri, Abdellah Benzaouak, Mohamed Elouardi, Lahcen El Hamdaoui, Fatima Zaaboul, Khalil Azzaoui, Belkheir Hammouti, Rachid Sabbahi, Shehdeh Jodeh, Mohammed Alaoui El Belghiti, Adnane El Hamidi

“…Diffuse reflectance spectroscopy (DRS) revealed reduced band gaps of 2.63 eV for 1wt.% PANI@NiTiO3 and 2.46 eV for 1wt.% PANI@CoTiO3, enhancing light absorption across UV and visible ranges. …”
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