X-Ray Performance of SiC NPN Radiation Detector by Jing Wang, Leidang Zhou, Liang Chen, Silong Zhang, Fangbao Wang, Tingting Fan, Zhuo Chen, Song Bai, Xiaoping Ouyang

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One-pot fabrication of highly porous morphology of ferric oxide-ferric oxychloride/poly-O-chloroaniline nanocomposite seeded on poly-1H pyrrole: Photocathode for green hydrogen gen... by Rabia Mohamed, Alnuwaiser Maha Abdallah

“…The photocathode exhibits broad optical absorption extending into the IR region and has a promising bandgap of 1.74 eV, making it a strong candidate for hydrogen gas generation within a constructed three-electrode cell. …”
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Enhanced optical properties of chitosan polymer doped with orange peel dye investigated via UV–Vis and FTIR analysis by Dyari M. Mamand, Dana S. Muhammad, Shujahadeen B. Aziz, Peshawa O. Hama, Bandar A. Al-Asbahi, Abdullah A. A. Ahmed, Jamal Hassan

“…UV–Visible spectroscopy indicated a reduction in the optical band gap from 5.11 eV in pure CS to 2.93 eV and 2.84 eV with increasing OPD concentrations, reflecting alterations in the electronic structure and enhanced sub-bandgap states. The refractive index improved from 1.31 in pure CS to 1.54 and 1.62 in the doped electrolytes, attributed to increased optical density and light-harvesting capability. …”
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Study of Transition Region of p-Type SiOx:H as Window Layer in a-Si:H/a-Si1-yGey:H Multijunction Solar Cells by Pei-Ling Chen, Po-Wei Chen, Chuang-Chuang Tsai

“…Compared to the amorphous SiOx:H(p) film prepared at low RH2, the SiOx:H(p) film deposited at RH2 of 167 exhibited a higher bandgap of 2.04 eV and a higher conductivity of 1.15 × 10−5 S/cm. …”
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The Influence of the Ammonolysis Temperature on the Photocatalytic Activity of β-TaON by Songhak Yoon, Alexandra E. Maegli, Santhosh Kumar Matam, Matthias Trottmann, Takashi Hisatomi, Céline Marie Leroy, Michael Grätzel, Simone Pokrant, Anke Weidenkaff

“…UV-Vis spectroscopy showed a bandgap energy of 2.6–2.4 eV. The highest oxygen evolution rate of 220 μmol·g−1·h−1 was achieved for β-TaON synthesized at . …”
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Graphene/TiO₂ Heterostructure Integrated with a Micro-Lightplate for Low-Power NO₂ Gas Detection by Paniz Vafaei, Margus Kodu, Harry Alles, Valter Kiisk, Olga Casals, Joan Daniel Prades, Raivo Jaaniso

“…Applying ultraviolet (380 nm) light with quantum energy above the TiO₂ bandgap effectively enhanced the sensor responses. …”
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CdSe Quantum Dots for Solar Cell Devices by A. B. Kashyout, Hesham M. A. Soliman, Marwa Fathy, E. A. Gomaa, Ali A. Zidan

“…CdSe quantum dots have been prepared with different sizes and exploited as inorganic dye to sensitize a wide bandgap TiO2 thin films for QDs solar cells. The synthesis is based on the pyrolysis of organometallic reagents by injection into a hot coordinating solvent. …”
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THEORETICAL STUDIES ON THE MAGNETIC, ELECTRICAL, AND OPTICAL PROPERTIES OF LEAD-FREE FERROELECTRIC Ba(Zr\(_{0.2}\)Ti\(_{0.8}\)O\(_3\))  MATERIALS WITH MANGANESE DOPING by Tien Lam Vu, Hoang Thoan Nguyen, Huu Lam Nguyen, Ngoc Trung Nguyen, Quoc Van Duong, Duc Dung Dang

“…The electronic structure calculations revealed that pristine BZT material behaves as a p-type semiconductor with direct and indirect bandgaps of 3.18 eV and 2.08 eV, respectively. Upon Mn doping, the bandgap values converge to zero, indicating a transition from semiconductor to metal behavior. …”
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Template-Free Synthesis of Star-Like ZrO2 Nanostructures and Their Application in Photocatalysis by Xue-Yu Tao, Jie Ma, Rui-Lin Hou, Xiang-Zhu Song, Lin Guo, Shi-Xiang Zhou, Li-Tong Guo, Zhang-Sheng Liu, He-Liang Fan, Ya-Bo Zhu

“…The synthesized ZrO2 showed a narrow bandgap (3.50–3.85 eV) and an excellent photocatalytic activity, and the degradation of RhB was up to nearly 100% in 30 min with this photocatalyst.…”
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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

“…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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Recent insights into the transformative role of Graphene‐based/TiO2 electron transport layers for perovskite solar cells by T. Sewela, R. O. Ocaya, T. D. Malevu

“…The main limitations of TiO2 are its poor visible‐light response by virtue of its wide bandgap of ~3.2 eV, and its high electron‐hole (e‐h) recombination rates, which are directly responsible for its low current densities. …”
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Cobalt titanate nanocatalyst for enhanced photodegradation of atrazine: kinetics, degradation efficiency, and mechanistic analysis by Jeremiah Suleiman Nuhu, Femi Emmanuel Awe, Rajni Garg, Rishav Garg, Nnabuk Okon Eddy, Hazratullah Paktin

“…The synthesized nanoparticles exhibited a surface area of 32.5 m2/g (DFT) and 828.03 m⁻1 (BET), a pore volume of 0.03925 m3/g, and a bandgap energy of 2.66 eV. Kinetic studies demonstrated that the degradation followed the Langmuir–Hinshelwood model, with the photocatalytic reaction being the rate-determining step. …”
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Development of Hydrogenated Microcrystalline Silicon-Germanium Alloys for Improving Long-Wavelength Absorption in Si-Based Thin-Film Solar Cells by Yen-Tang Huang, Hung-Jung Hsu, Shin-Wei Liang, Cheng-Hang Hsu, Chuang-Chuang Tsai

“…With the increasing RGeH4, the accompanied increase in Ge content of μc-Si1-xGex:H narrowed the bandgap and markedly enhanced the long-wavelength absorption. …”
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Preparation and Characterization of Ni-Doped TiO2 Materials for Photocurrent and Photocatalytic Applications by Ibram Ganesh, A. K. Gupta, P. P. Kumar, P. S. C. Sekhar, K. Radha, G. Padmanabham, G. Sundararajan

“…Characterization results suggest that as a dopant, Ni stabilizes TiO2 in the form of anatase phase, reduces its bandgap energy, and adjusts its flat band potentials such that this material can be employed for photoelectrochemical (PEC) oxidation of water reaction. …”
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Synthesis of lutetium hydrides at high pressures by Yuan-Ao Peng, Han-Yu Wang, Fu-Hai Su, Pu Wang, Hai-An Xu, Lin Liu, Lun-Xuan Yu, Ross T. Howie, Wan Xu, Eugene Gregoryanz, Xiao-Di Liu

“…We also demonstrate that the bandgap of LuH3 slowly closes under pressure and is noticeably lower than that of LuH2.…”
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Improving Photocatalytic Efficiency with Titanium Dioxide Quantum Dots by Nam Duy Dao, Tho Thi Lam, Anh Dieu Van, Ha Thi Thu Vu, Hai Huynh Trung

“…Characterization through TEM, XRD, PL, and UV-Vis-DRS analyses revealed uniform quantum dots with an average size of 5.28 nm, a bandgap energy of 3.22 eV, and a crystalline anatase phase, indicative of high photocatalytic activity. …”
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Solution-Based Ultraviolet Photodiode with ZnO Nanoparticle/Poly(3,4-Ethylenedioxythiophene) Polystyrene Sulfonate Heterojunction and Negative Capacitance by Jin Li, Xin Chang, Shunpu Li, Yi Zhang, Daping Chu

“…The demand for high-performance UV detectors with low cost and easy fabrication drives the development of novel materials and structures such as wide-bandgap semiconductors, polymers, photodiodes, and phototransistors. …”
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Numerical Investigation of Ultra-Wide Low-Frequency Wave Attenuation Using Seismic Metamaterials with Auxetic Slender Strips by Haosheng Liu, Hongbo Zhang

“…Seismic metamaterials are an emerging vibration-damping technology, yet concentrating the bandgap in the low-frequency range remains challenging due to the constraints imposed by lattice size. …”
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High‐Efficiency Flexible GaAs/InGaAs Dual‐Junction Solar Cells Fabricated by Metallic Nanoparticle‐Based Wafer Bonding by Yeongho Kim, Suho Park, Thuy Thi Nguyen, Jiyeon Jeon, Byong Sun Chun, Sang Jun Lee

“…Multijunction solar cells made from highly lattice‐mismatched (LMM) material systems offer an optimal bandgap combination for the ultrahigh conversion of solar energy to electricity. …”
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Enhanced Laser Damage Threshold in Optically Addressable Light Valves via Aluminum Nitride Photoconductors by Soroush Ghandiparsi, Bikram Chatterjee, Jimmy‐Xuan Shen, Miranda S. Gottlieb, Clint D. Frye, Joseph D. Schneider, Ryan D. Muir, Brandon W. Buckley, Sara E. Harrison, Qinghui Shao, Joel B. Varley, Lars F. Voss

“…Design considerations for OALVs incorporating UWBG photoconductors are discussed, and the photoresponsivity from defect‐mediated sub‐bandgap absorption in AlN crystals is verified as sufficient for OALVs operating under high light fluences. …”
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