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.…”
Get full text

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. …”
Get full text

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. …”
Get full text

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.…”
Get full text

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. …”
Get full text

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%. …”
Get full text

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. …”
Get full text

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. …”
Get full text

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. …”
Get full text

Synthesis and luminescence properties of Na3SrB5O10:Eu3+ glass samples for solid-state lighting application by Amruta Gaikwad, Yatish R. Parauha, Kamlesh V Dabre, S.J. Dhoble

“…Borate materials are very beneficial for optical materials due to its wide transparency range, huge electronic band gap, thermal and chemical durability, low preparative temperature, and high optical damage threshold. …”
Get full text

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.…”
Get full text

Multifeed EBG Dual-Band Antenna for Spatial Mission by A. Kanso, R. Chantalat, U. Naeem, H. Chreim, M. Thevenot, S. Bila, T. Monediere

“…We present the design of a multibeam reflector antenna fed by a multifeed dual-band electromagnetic band gap (EBG) antenna to achieve a high-gain multispot coverage for space applications. …”
Get full text

New Method of Depositing the Nanostructured Amorphous Carbon for Carbon Based Solar Cell Applications by A. N. Fadzilah, K. Dayana, M. Rusop

“…From Tauc’s plot, optical band gap () was determined, and decreased as deposition temperature increased (1.2 eV, 1.0 eV, 0.7 eV). …”
Get full text

The NaBH4 Reduction and pH Effects on the Optical Property of Bismuth Vanadate by Riapanitra Anung, Julian Haryanto Michael, Setyaningtyas Tien, Riyani Kapti, Nur Handayani Santi

“…Higher pH levels during reduction led to narrower band gaps and enhanced visible-light responsiveness. …”
Get full text

Carbon Nanosphere-Based TiO₂ Double Inverse Opals by Dániel Attila Karajz, Kincső Virág Rottenbacher, Klára Hernádi, Imre Miklós Szilágyi

“…Reflectance mode UV–visible spectroscopy showed that most IOs had photonic properties, i.e., a photonic band gap, and by the “slow” photon effect enhanced absorbance, except the 326 nm IO, even though it also had an increase in absorbance. …”
Get full text

A comprehensive study on the electronic, optical, and light harvesting examination of mixed cation 2-Br-PEAI/FAPbI3 perovskite solar cells through first principles calculations and... by Mohammed Benali Kanoun, Adil Alshoaibi, Mousaab Belarbi, Souraya Goumri-Said

“…The results reveal that the mixed 2-Br-PEAI/FAPbI3 surface exhibits a band gap of 1.92 eV and a notably high absorption coefficient on the scale of 105 cm−1. …”
Get full text

Innovative bio-inspired solar cells using fly ash-based dye-sensitized cells with fruit extract enhancements and Averrhoa bilimbi electrolyte by Retyo Wizi Nafa Utami, Tresna Dewi, Indrayani Indrayani

“…UV-Vis spectroscopy demonstrated that dragon fruit dye absorbs light effectively in the 360-700 nm range, peaking at 550 nm, making it an ideal sensitizer for wide-band gap semiconductors. Voltage output tests showed that Fe-doped DSSCs consistently outperformed Mg-doped ones, with Fe-based cells generating a maximum voltage of 413 mV compared to 163 mV for Mg-based cells. …”
Get full text

Visible-Light-Active Titania Photocatalysts: The Case of N-Doped TiO2s—Properties and Some Fundamental Issues by Alexei V. Emeline, Vyacheslav N. Kuznetsov, Vladimir K. Rybchuk, Nick Serpone

“…Several workers have surmised that the (intrinsic) band gap of TiO2 is narrowed by coupling dopant energy states with valence band (VB) states, an inference based on DFT computations. …”
Get full text

Ultrafine dendritic Cu particles for extremely fast pressure-assisted sintering under air and pore-free bond lines by Sang Hoon Jung, Jong-Hyun Lee

“…To overcome the bottleneck of the die-attach process in the manufacture of power modules based utilizing band gap semiconductors, an extremely fast pressure-assisted sinter-bonding method employing a low-cost Cu paste was developed. …”
Get full text

DFT + U study of structural, electronic, optical and magnetic properties of LiFePO4 Cathode materials for Lithium-Ion batteries by A K Wabeto, K N Nigussa, L D Deja

“…It is shown that LFP has a direct band gap value of 3.82 eV, which is very close to experiment values of 3.6-4.0 eV. …”
Get full text