Article
Nanoscience & Nanotechnology
Timothy A. Morgan, Justin Rudie, Mohammad Zamani-Alavijeh, Andrian V. Kuchuk, Nazar Orishchin, Fikadu Alema, Andrei Osinsky, Robert Sleezer, Gregory Salamo, Morgan E. Ware
Summary: The band offsets for the beta-(Al0.21Ga0.79)(2)O-3/beta-Ga2O3 (010) heterojunction were experimentally measured, and the resulting band alignment was determined to be of type II. These findings provide valuable data for the design and prediction of beta-(AlxGa1-x)(2)O-3 heterojunction-based devices.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Chenhao Gao, Xiu Liu, Xuan Fang, Bobo Li, Mingxia Qiu, Qianwen Zhang, Haixi Zhang, Hongbin Zhao, Dengkui Wang, Dan Fang, Yingjiao Zhai, Xueying Chu, Jinhua Li, Xiaohua Wang
Summary: In this research, the band offset of the MAPbBr(3)/Al2O3 heterojunction was determined through X-ray photoelectron spectroscopy measurements, showing a type-I band alignment. The carrier confinement effect was observed in the photoluminescence spectra of the heterojunction sample. This study is valuable for the optimization of energy level alignment in perovskite/metallic oxide heterojunctions for the design of photoelectric devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Amit Kumar Mauraya, Debashrita Mahana, Gaurav Jhaa, Bipul Kumar Pradhan, Shweta Tomer, Preetam Singh, Sunil Singh Kushvaha, Senthil Kumar Muthusamy, Sunil Singh Kushvaha, Senthil Kumar Muthusamy
Summary: Heterojunction-based gas sensors, constructed by combining vacuum evaporation and r.f. sputtering or atomic layer deposition techniques, show enhanced sensing characteristics and selectivity towards CO gas. The ZnO/SnO2 heterojunction exhibits 6-fold enhancement in sensing response compared to bare SnO2 films, with fast response time and low limit of detection.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Monu Mishra, Varun Thakur, Pankaj Srivastava, Govind Gupta
Summary: The report investigated the interfacial band offset in a heterojunction of PEDOT:PSS and Gallium Nitride using X-ray photoemission studies. A Type-I band alignment with a valence band offset of 1.6 eV was observed in the developed PEDOT:PSS/GaN hetero-interface, with PEDOT:PSS deposition on GaN leading to reduced surface roughness and uniform coverage.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Multidisciplinary Sciences
Ming Zhou, Haomin Song, Xingyu Xu, Alireza Shahsafi, Yurui Qu, Zhenyang Xia, Zhenqiang Ma, Mikhail A. Kats, Jia Zhu, Boon S. Ooi, Qiaoqiang Gan, Zongfu Yu
Summary: Researchers have developed daytime radiative condensers that can operate 24 hours a day without active energy consumption, producing water from vapor under direct sunlight. This new technology can significantly enhance the performance of passive vapor condensation for water extraction and purification applications.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Chemistry, Physical
J. Canas, G. Alba, D. Leinen, F. Lloret, M. Gutierrez, D. Eon, J. Pernot, E. Gheeraert, D. Araujo
Summary: This study examined the heterojunction of atomic layer deposited alumina and (100) p-diamond using XPS and transmission electron microscopy. A new methodology was employed to measure the valence band offset between diamond and gamma-alumina, resulting in a value of 3.4 eV.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Kingsley O. Egbo, Sujit K. Shil, Cheuk Gary Kwok, Ying Wang, Chao Ping Liu, Kin Man Yu
Summary: This study provides a comprehensive analysis of the optical properties and electronic band offsets of NiO, MoO3, and WO3 oxides, with a focus on the NiO/MoO3 and NiO/WO3 P-N heterojunctions. It was found that both heterojunctions exhibit a type-II band offset, with NiO/MoO3 showing a larger valence band offset. By utilizing XPS and Ultraviolet-Ambient Photoemission spectroscopy, the electronic structures and energy levels of these oxides were deeply investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Jesus Canas, Daniel F. Reyes, Alter Zakhtser, Christian Dussarrat, Takashi Teramoto, Marina Gutierrez, Etienne Gheeraert
Summary: The synthesis development of silicon oxide atomic layer deposition has opened the possibility of using it as a dielectric material in diamond electronics. The study of the heterojunction between deposited silicon oxide and oxygen-terminated diamond has provided insights into the properties and interface of the materials.
Article
Environmental Sciences
Yueh-Feng Li, Ching-Yao Hu, Yu-Chi Lee, Shang-Lien Lo
Summary: This study found that adding ZnCl2 can increase the efficiency of EC for PFOA, and the longer the carbon chain of PFA, the better the removal by EC. Chemical bonding between aluminum and fluoride was observed. The main functions of ZnCl2 were to prevent the rise in pH and improve flotation.
Article
Chemistry, Applied
Yu. B. Makarychev, Yu. A. Kuzenkov, D. O. Chugunov, O. Yu. Grafov, A. D. Aliev
Summary: This study investigated the adsorption and polymerization of vinyltrimethoxysilane (VS) on the surface of aluminum AMG and magnesium alloy M20 in the presence of water vapor and ethylene glycol (EG). The results showed that ethylene glycol acted as an effective polymerization promoter due to the crosslinking of hydroxyl and ethanol groups. XPS analysis revealed the formation of magnesium glycolate polymolecules with developed three-dimensional structures. Different ratios of siloxane and poly-oxy magnesium structures in protective coatings were achieved by varying the composition of the vapor-gas mixture. Moreover, the impregnation of oxidized aluminum and magnesium alloys with organosilanes significantly enhanced their corrosion and mechanical resistance.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Physics, Condensed Matter
Romita Chouhan, Arpana Agrawal, Mukul Gupta, Pratima Sen
Summary: The valence and conduction band offset in FeNiO/CuNiO bilayer film were studied, revealing a type-I band alignment at the interface, which facilitates the understanding of carrier transport mechanisms.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Minsu Kim, Minkyun Son, Dong-Bum Seo, Jin Kim, Moonjeong Jang, Dong In Kim, Seunghun Lee, Soonmin Yim, Wooseok Song, Sung Myung, Jung-Woo Yoo, Sun Sook Lee, Ki-Seok An
Summary: This study adopts simultaneous predeposition of a metal source (MoO3) and salt (NaCl) by thermal evaporation to achieve remarkable 2D growth effects, including promoted growth, easy patterning, and potential diversity of materials. Step-by-step spectroscopy combined with morphological analyses reveals a reaction path for MoS2 growth involving the formation of Na2SO4 and Na2Mo2O7 intermediates from the separate reactions of NaCl with S and MoO3, respectively. These intermediates provide a favorable environment for 2D growth, resulting in the formation of large grains of monolayer MoS2. This study contributes to understanding the principles of salt catalysis and the evolution of CVD in the preparation of 2D TMDs.
Article
Multidisciplinary Sciences
Arisara Panthawan, Nidchamon Jumrus, Panupong Sanmuangmoon, Winai Thongpan, Tewasin Kumpika, Wattikon Sroila, Ekkapong Kantarak, Adisorn Tuantranont, Pisith Singjai, Wiradej Thongsuwan
Summary: Copper-iron oxide composite films were deposited on quartz substrate using a sparking process. The film with the lowest band gap energy was observed after annealing at 700 degrees C, showing higher photocatalytic activity than TiO2.
SCIENTIFIC REPORTS
(2022)
Article
Multidisciplinary Sciences
Iwan Haechler, Hyunchul Park, Gabriel Schnoering, Tobias Gulich, Mathieu Rohner, Abinash Tripathy, Athanasios Milionis, Thomas M. Schutzius, Dimos Poulikakos
Summary: This study demonstrates a system that combines radiative shielding and cooling with a superhydrophobic condensate harvester to passively collect atmospheric water. The system achieves dew mass fluxes up to 50 g m(-2) hour(-1) while doubling the yield of related technologies, advancing the state of the art.
Article
Electrochemistry
Adi Vinegrad, Heftsi Ragones, Nishani Jayakody, Gilat Ardel, Meital Goor, Yossi Kamir, Moty Marcos Dorfman, Alexander Gladkikh, Larisa Burstein, Yonatan Horowitz, Steve Greenbaum, Diana Golodnitsky
Summary: In this research, polylactide-polyethylene-oxide blended membranes were developed and printed using fused-filament fabrication, with an ionic liquid infused to produce quasi-solid polymer electrolytes. The study found that increasing the content of polyethylene oxide led to a significant improvement in bulk conductivity of the membranes.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)