Article
Chemistry, Multidisciplinary
Igor P. Koskin, Christina S. Becker, Alina A. Sonina, Vasiliy A. Trukhanov, Nikita A. Shumilov, Anatoly D. Kuimov, Yuliya S. Zhuravleva, Yuliya O. Kiseleva, Inna K. Shundrina, Peter S. Sherin, Dmitry Yu Paraschuk, Maxim S. Kazantsev
Summary: The selective fluorination of FPCOs lowers the energies of frontier molecular orbitals, improving the photostability, tuning the pi-pi stacked packing, and allowing the first realization of electron transport in FPCOs. Selectively fluorinated 2,2'- (2,3,5,6-tetrafluoro-1,4-phenylene) bis[5-(3,5-difluorophenyl) furan] demonstrates well-balanced ambipolar charge transport and efficient electroluminescence in an OLET with high external quantum and luminous efficiencies. Smart fluorination is a powerful tool to fine-tune the stability and performance of linearly conjugated small molecules for organic optoelectronics.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Physics, Applied
Yushan Li, Ruiqiang Tao, Waner He, Cheng Chang, Zhengmiao Zou, Yan Zhang, Dao Wang, Jiali Wang, Zhen Fan, Guofu Zhou, Xubing Lu, Junming Liu
Summary: The proposed transistor-based artificial synapse successfully emulates essential synaptic functions and provides a feasible device structure for future demands of neuromorphic computing.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Gwangtaek Oh, Ji Hoon Jeon, Young Chul Kim, Yeong Hwan Ahn, Bae Ho Park
Summary: The study introduces a graphene/MoSe2 barristor with a high on/off ratio and external quantum efficiency. By applying an electric field to the gate electrode, the photocurrent of the barristor can be modulated, resulting in a high gate tuning ratio.
NPG ASIA MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Christy Roshini Paul Inbaraj, Roshan Jesus Mathew, Rajesh Kumar Ulaganathan, Raman Sankar, Monika Kataria, Hsia Yu Lin, Yit-Tsong Chen, Mario Hofmann, Chih-Hao Lee, Yang-Fang Chen
Summary: By utilizing a mechanically tunable device concept, this research demonstrates a route towards increased integration density, with bi-anti-ambipolar transistors showing two distinct peaks in transconductance. The dynamic deformation of the device reveals the co-occurrence of two conduction pathways as the origin of this previously unobserved behavior.
Article
Chemistry, Multidisciplinary
R. Tormo-Queralt, C. B. Moller, D. A. Czaplewski, G. Gruber, M. Cagetti, S. Forstner, N. Urgell-Olle, J. A. Sanchez-Naranjo, C. Samanta, C. S. Miller, A. Bachtold
Summary: Researchers have developed a reliable process to fabricate multielectrode circuits that can withstand harsh conditions of nanotube growth. High-quality charge stability diagrams of double and triple quantum dots have been measured, and long-range tunneling of electrons between the quantum dots has been observed. This work paves the way for the realization of a new generation of condensed-matter devices in an ultraclean environment.
Article
Chemistry, Multidisciplinary
Yande Que, Yang-Hao Chan, Junxiang Jia, Anirban Das, Zhengjue Tong, Yu-Tzu Chang, Zhenhao Cui, Amit Kumar, Gagandeep Singh, Shantanu Mukherjee, Hsin Lin, Bent Weber
Summary: Atomic monolayers of tungsten ditelluride (WTe2) exhibit a 2D topological excitonic insulator state, and the 2D bulk energy gap can be tuned by gate voltage, providing a novel way to control non-trivial 2D superconductivity with excitonic pairing.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Yiming Sun, Wei Gao, Xueping Li, Congxin Xia, Hongyu Chen, Li Zhang, Dongxiang Luo, Weijun Fan, Nengjie Huo, Jingbo Li
Summary: van der Waals (vdW) heterostructures, formed by stacking different 2D materials, provide a promising platform for diverse physical phenomena and device functions. By utilizing gate voltage to modulate carrier concentration and transport in heterojunctions like MoTe2 and InSe, novel electronic and optoelectronic devices can be achieved. The MoTe2/InSe heterojunction exhibits anti-ambipolar transfer characteristics with a large work window and high peak-to-valley current ratio, showing potential for high-performance multifunctional optoelectronics.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
George Chimowa, Emmanuel Flahaut, Venkateswara Rao Sodisetti, Somnath Bhattacharyya
Summary: Carbon nanotube (CNT)-based transistors can be converted from ambipolar to unipolar, allowing them to carry large currents for applications requiring high current, such as RF and audio amplifiers.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Baowang Su, Xilin Zhang, Ronghui Luo, Xudong Chen, Jianguo Tian, Zhibo Liu
Summary: In this study, high-performance anti-ambipolar transistors based on 2D van der Waals heterostructures of black phosphorus and molybdenum disulfide are demonstrated. These transistors show apparent gate-tunable photoresponses in the visible and infrared wavelength range and exhibit strong photoresponses in the driving voltage range. The type II band alignment and photogating effect in the heterostructure enable high-performance photodetection with high detectivity and responsivity.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Jie Zhao, Fang Liu, Qi Huang, Tongkang Lu, Meiqi Xi, Lianmao Peng, Xuelei Liang
Summary: In this study, carbon nanotube thin films were used to fabricate synaptic transistors, successfully demonstrating weight updates of synapses and mimicking various basic synaptic functions. The research achieved good performance in terms of computational capabilities and power consumption.
Article
Engineering, Electrical & Electronic
Wolfgang Rao Bodlos, Sang Kyu Park, Birgit Kunert, Soo Young Park, Roland Resel
Summary: The study found that thin films deposited at different temperatures in a specific molar ratio cocrystal system exhibit different crystal structures and transistor performance. Crystal growth is enhanced with increasing temperature, but performance decreases at higher temperatures.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Keita Funayama, Jun Hirotani, Atsushi Miura, Hiroya Tanaka, Yutaka Ohno, Yukihiro Tadokoro
Summary: In this study, a carbon nanotube-based field emission nanoscale diode was proposed and demonstrated, allowing for easy fabrication and individual tunability of multiple CNT diodes on the nanoscale on the same substrate in a one-time process. The nanodiode also enables adjustment of the turn-on voltage from 1 to 2.4 V by varying the surface area of the anode, showing potential for developing carbon-based nanoelectronic systems and demonstrating basic logic gates on a CNT-based fundamental logic gates.
Article
Computer Science, Information Systems
Hongyu Ding, Jiangwei Cui, Qiwen Zheng, Haitao Xu, Ningfei Gao, Mingzhu Xun, Gang Yu, Chengfa He, Yudong Li, Qi Guo
Summary: The TID effect of top-gate structure CNTFETs and the influence of substrate on top-gate during irradiation were studied. The degradation of parameters in top-gate P-type CNTFETs caused by irradiation and radiation-damage mechanisms was obtained. The research also explored the characteristics of back-gate transistors and the effect of trapped charge on top-gate transistors induced by radiation. After irradiation, the hysteresis window of CNTFETs increased with the increase in TID.
Article
Physics, Applied
Xinzhao Xu, Zamaan Mukadam, Giuseppe Amoroso, Mark Freeley, Matteo Palma
Summary: This study demonstrates the fabrication of multiplexed single-walled carbon nanotube (SWCNT) devices with single-tube precision, where selected chiralities are separately immobilized and electrically measured. Through aqueous two-phase polymer systems and dielectrophoresis, (6,5) and (7,5) SWCNT species were isolated and precisely controlled for placement on prepatterned electrodes on a single chip.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Renzo A. Fenati, Peter C. Sherrell, Dmitriy A. Khodakov, Joseph G. Shapter, Amanda Ellis
Summary: This study presents a simple dual-well device that enables complementary redox reactions between spatially isolated solutions, demonstrating the efficiency of multi-walled carbon nanotubes in transporting charge carriers and highlighting their potential for versatile sensors.
MATERIALS HORIZONS
(2021)
Article
Chemistry, Physical
Nadejda Bouldi, Matteo Mannini, Marius Retegan, Reece G. Miller, Benjamin Cahier, Philippe Sainctavit, Nathalie Guihery, Talal Mallah, Delphine Cabaret, Diane Gouere, Francois Baudelet, Lucie Nataf, Fabrice Wilhelm, Francois Guillou, Andrei Rogalev, Nicolas Suaud, Sally Brooker, Amelie Juhin
Summary: The spin crossover transition in two molecular Co2+bis-imide compounds, Co(dpzca)2 and Co(pypzca)2, was investigated. While both compounds have similar crystal structures, they exhibit different temperature-dependent magnetic behaviors. The study reveals that Co(pypzca)2 undergoes a reversible pressure-induced SCO transition, while Co(dpzca)2 undergoes a temperature-induced SCO transition. The differences in the SCO transitions are likely due to different intermolecular interactions between the two compounds.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Engineering, Electrical & Electronic
M. Choueib, A. Derouet, P. Vincent, A. Ayari, S. Perisanu, P. Poncharal, C. S. Cojocaru, R. Martel, S. T. Purcell
Summary: This study reports a pronounced double negative differential resistance (NDR) phenomenon observed on highly crystalline p-type silicon nanowires, suggesting new functionalities for pulsing electron sources at high repetition rates.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
(2022)
Article
Chemistry, Inorganic & Nuclear
Julio Corredoira-Vazquez, Cristina Gonzalez-Barreira, Matilde Fondo, Ana M. Garcia-Deibe, Jesus Sanmartin-Matalobos, Silvia Gomez-Coca, Eliseo Ruiz, Enrique Colacio
Summary: A new synthetic method has been developed to isolate a series of fluoride-bridged complexes, which exhibit interesting magnetic properties and provide theoretical insights into the structure-magnetism relationship for this type of compounds.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Si-Guo Wu, Long-Fei Wang, Ze-Yu Ruan, Shan-Nan Du, Silvia Gomez-Coca, Zhao-Ping Ni, Eliseo Ruiz, Xiao-Ming Chen, Ming-Liang Tong
Summary: In this study, a rare cationic metal-organic framework with hysteretic spin-crossover behavior and redox-programmable capability is reported. The stepwise spin-crossover dynamics can be manipulated by chemical redox reactions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Amandine Bellec, Massine Kelai, Arthur Tauzin, Anastasia Railean, Vincent Repain, Jerome Lagoute, Yann Girard, Sylvie Rousset, Edwige Otero, Talal Mallah, Marie-Laure Boillot, Cristian Enachescu
Summary: In this study, the photoexcitation of ultrathin films of [FeII((3, 5-(CH3)2Pz)3BH)2] (Pz = pyrazolyl) adsorbed on a special substrate was investigated. The anomalous light-induced spin-state switching was observed for sub-monolayer coverage, while the well-known light-induced excited spin-state trapping effect was recovered for higher coverages. The combination of continuous light excitation and thermal cycling revealed light-induced thermal hysteresis for thicker films and extended thermal conversion over a large temperature range for sub-monolayer coverage. Mechanoelastic simulations showed opposite behaviors in different layers of the films due to intermolecular interactions.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Editorial Material
Electrochemistry
Mariam Ezzedine, Fatme Jardali, Ileana Florea, Zamfir Mihai-Robert, Cojocaru Costel-Sorin
Summary: In this study, a hybrid nanostructured anode based on silicon nanoparticles (SiNPs) anchored on vertically aligned carbon nanotubes (VACNTs) was synthesized on a commercial macroscopic current collector. The capacity stability of the electrode was improved by adjusting the SiNPs deposition time or the VACNTs length. By increasing the VACNTs length, a higher gravimetric capacity and higher areal loading mass of silicon were achieved without compromising cycling stability. This hybrid nanostructured electrode exhibited excellent stability with a reversible capacity of 1330 mAh g(-1) after 2000 cycles.
BATTERIES & SUPERCAPS
(2023)
Review
Chemistry, Multidisciplinary
Veacheslav Vieru, Silvia Gomez-Coca, Eliseo Ruiz, Liviu F. Chibotaru
Summary: This review discusses the synthesis methods of single-molecule magnets (SMMs) and the basic factors affecting their performance, as well as the strategies for further enhancing SMM performance. Practical approaches for designing SMMs for memory devices are also presented.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Pascal Vincent, Federico Panciera, Ileana Florea, Nicholas Blanchard, Costel Sorin Cojocaru, Mariam Ezzedine, Haifa Taoum, Sorin Perisanu, Pierre De Laharpe, Anthony Ayari, Julien Chaste, Khakimjon Saidov, Utkur Mirsaidov, Stephen Thomas Purcell, Pierre Legagneux
Summary: In this study, we observed in real time the aligning effect of electric fields during the synthesis of carbon nanotubes using an environmental transmission electron microscope. The nanotubes showed excellent alignment and allowed for accurate determination of growth rates. Different growth behaviors were observed, including constant growth rates and acceleration. The mechanisms behind these behaviors, as well as the balance between electrostatic and adhesion forces, were discussed.
Article
Chemistry, Multidisciplinary
Nicolas Suaud, Aristide Colin, Mohammed Bouammali, Talal Mallah, Nathalie Guihery
Summary: A complete theoretical analysis using both the simple Hückel model and more sophisticated multi-reference calculations has been conducted on a trinuclear Ni(II) complex. The results show that the electronic structure of the non-innocent ligand HHTP3- is independent of both the chemical nature and geometry of the metal ions. Furthermore, a direct correlation between the geometrical and electronic structures of the ligand has been established.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Andjelika Bjelajac, Ileana Florea, Mihai Zamfir, Sandrine Tusseau Nenez, Costel Sorin Cojocaru
Summary: In this study, vertically aligned multiwall carbon nanotubes (CNTs) films were used as support for ZnO/ZnS photocatalytic active nanostructures. The CNTs were synthesized using a hot-filament chemical vapor deposition (HfCVD) method. Point defects in the CNTs outer walls were created using a low pressure nonthermal water vapors diffusive plasma, and Zn nanoparticles were subsequently electrodeposited onto the CNTs. The samples were annealed to obtain ZnO, ZnS, and a mix phase of ZnO/ZnS. The absorption of ZnO was enhanced by S doping and involvement of CNTs, and the ZnO1-xSx@CNTs heteronanostructure showed the highest photocatalytic activity for methyl blue dye degradation among the studied samples.
Article
Materials Science, Multidisciplinary
Kevin Magra, Jean-Frederic Audibert, Diana Dragoe, Talal Mallah, Fabien Miomandre, Marie-Laure Boillot
Summary: A single layer of CoII-BODIPY dyad complex on transparent ITO electrode was prepared and its photoluminescence intensity can be modulated by applying an electric stimulus. The fluorescence intensity decreases when the cobalt is at the +III oxidation state due to CoIII oxidative quenching of BODIPY emission. The reversible electrical switching of the CoII-BODIPY dyad complex grafted on ITO was investigated.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Hugo Therssen, Laure Catala, Sandra Mazerat, Talal Mallah, Dominique Vuillaume, Thierry Melin, Stephane Lenfant
Summary: This study investigates the electron transport properties between Prussian Blue Analog (PBA) cubic nanocrystals and graphene. It reveals that these nanocrystals exhibit unique characteristics in terms of almost size-independent electron injection barrier and significantly enhanced conductivity compared to PBA films.
Article
Chemistry, Inorganic & Nuclear
Raul Diaz-Torres, Silvia Gomez-Coca, Eliseo Ruiz, Phimphaka Harding, David J. Harding
Summary: A family of heteroleptic spin crossover (SCO) complexes have been synthesized, and their spin transition properties vary with temperature. The magnetic properties of these complexes are significantly improved by slight changes in crystal packing, which enhance the cooperativity.
DALTON TRANSACTIONS
(2023)
Article
Electrochemistry
Mariam Ezzedine, Fatme Jardali, Ileana Florea, Mihai-Robert Zamfir, Costel-Sorin Cojocaru
Summary: The study presents a hybrid nanostructured electrode based on silicon nanoparticles and carbon nanotubes, which improves the capacity stability of the electrode by tuning the active silicon areal loading, and achieves a higher gravimetric capacity and higher areal loading mass of silicon.
BATTERIES & SUPERCAPS
(2023)
