scholarly journals Two-Dimensional Semiconductor Heterojunctions for Optoelectronics and Electronics

2021 ◽  
Vol 9 ◽  
Author(s):  
Qian Wang ◽  
Lin Zhang ◽  
Xuejuan Liu ◽  
Sha Li
Keyword(s):  
Electric Fields ◽  
Chemical Properties ◽  
Band Alignment ◽  
Physical And Chemical Properties ◽  
Two Dimensional ◽  
Layered Semiconductors ◽  
Future Developments ◽  
Device Applications ◽  
Physical And Chemical ◽  
And Chemical Properties

Two-dimensional (2D) layered semiconductors are current research hotspots on account of their wide variety of applications in electronics and optoelectronics due to their particular ultrathin nature. In this review, the band alignment engineering in heterojunctions composed of 2D van der Waals (vdW) layered semiconductors and their device applications in optoelectronics are provided. Various approaches that induced adjustability of vdW heterojunctions are summarized, mainly including composition and thickness modulations, strain, and electric fields. Furthermore, their perspectives on future developments in optoelectronics and electronics devices based on the newly unique physical and chemical properties are outlined.

scholarly journals Liquid phase exfoliation of antimonene: systematic optimization, characterization and electrocatalytic properties

2019 ◽  
Vol 7 (39) ◽  
pp. 22475-22486 ◽  
Author(s):  
Carlos Gibaja ◽  
Mhamed Assebban ◽  
Iñigo Torres ◽  
Michael Fickert ◽  
Roger Sanchis-Gual ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Two Dimensional ◽  
Electrocatalytic Properties ◽  
Systematic Optimization ◽  
Group 15 ◽  
Liquid Phase Exfoliation ◽  
Physical And Chemical ◽  
And Chemical Properties

Antimonene, a novel group 15 two-dimensional material, is attracting great attention due to its outstanding physical and chemical properties.

2D Boron Nanosheets Architectonics: Opening New Territories by Smart Functionalization

2022 ◽  
Author(s):  
Chao Han ◽  
Rui Han ◽  
Xin Zhang ◽  
Zhi Xu ◽  
Weijie Li ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Atomic Weight ◽  
Dimensional Structure ◽  
Physical And Chemical Properties ◽  
Two Dimensional ◽  
Physical And Chemical ◽  
And Chemical Properties

Due to its low atomic weight, two-dimensional structure, and unique physical and chemical properties, borophene has attracted strong interests from researchers across different fields. Currently, the experimentally realized polymorphs of...

Progress of Graphene-Based Hydrogel

2016 ◽  
Vol 852 ◽  
pp. 714-719
Author(s):  
Yu Xiang ◽  
Li Bin Liu ◽  
Zhao Dang ◽  
Ting Li
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Two Dimensional ◽  
Reduced Graphene ◽  
Physical And Chemical ◽  
Significant Attention ◽  
And Chemical Properties

Graphene, a typical two-dimensional planar monolayer of sp2carbon atoms, has attracted significant attention due to its outstanding physical and chemical properties. Nowadays, many graphene-based composites have been synthesized. Among them, graphene hydrogels (including graphene oxide hydrogel and reduced graphene oxide hydrogel) as a kind of graphene-based composites have a wide application prospect. In this paper, the progresses of graphene-based hydrogels are reviewed, and the prospects for the development of graphene-based hydrogels are also discussed.

Design of 2D materials – MSi2CxN4-x (M = Cr, Mo, and W; x = 1 and 2) - with tunable electronic and magnetic properties

Nanoscale ◽  
2021 ◽  
Author(s):  
Bowen Li ◽  
Jiazhong Geng ◽  
Haoqiang Ai ◽  
youchao Kong ◽  
Haoyun Bai ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
2D Materials ◽  
Chemical Properties ◽  
First Principle ◽  
Physical And Chemical Properties ◽  
Two Dimensional ◽  
Electronic And Magnetic Properties ◽  
The Past ◽  
Physical And Chemical ◽  
And Chemical Properties

Two-dimensional (2D) materials have attracted increasing interest in the past decades due to their unique physical and chemical properties for diverse applications. In this work, we present a first-principle design...

scholarly journals Sensing the polar molecules MH3 (M = N, P, or As) with a Janus NbTeSe monolayer

2020 ◽  
Vol 44 (19) ◽  
pp. 7932-7940 ◽  
Author(s):  
Xiaoyong Yang ◽  
Deobrat Singh ◽  
Zhitong Xu ◽  
Rajeev Ahuja
Keyword(s):  
Electric Field ◽  
Chemical Properties ◽  
Polar Molecules ◽  
Physical And Chemical Properties ◽  
Device Applications ◽  
Physical And Chemical ◽  
And Chemical Properties

The unique intrinsic electric field and prominent physical and chemical properties of Janus TMDs have attracted extensive attention for device applications.

scholarly journals Wafer-scale two-dimensional platinum monosulfide ultrathin film via metal sulfurization for high performance photoelectronics

2022 ◽  
Author(s):  
Jinbo Pang ◽  
Yanhao Wang ◽  
Xiaoxin Yang ◽  
Lei Zhang ◽  
Yufen Li ◽  
...  
Keyword(s):  
High Performance ◽  
Chemical Properties ◽  
Ultrathin Film ◽  
Physical And Chemical Properties ◽  
Two Dimensional ◽  
Wafer Scale ◽  
Platinum Group Minerals ◽  
Platinum Group ◽  
Physical And Chemical ◽  
And Chemical Properties

2D nonlayered materials have attracted enormous research interests due to their novel physical and chemical properties with the confined dimensions. Platinum sulfide as one of the most common platinum-group minerals...

Factors in Processing Reclaimed Rubber

1928 ◽  
Vol 1 (1) ◽  
pp. 59-69
Author(s):  
P. S. Shoaff
Keyword(s):  
High Temperatures ◽  
Raw Materials ◽  
Chemical Properties ◽  
Minimum Amount ◽  
Physical And Chemical Properties ◽  
Future Developments ◽  
Large Particles ◽  
Long Time ◽  
Physical And Chemical ◽  
And Chemical Properties

Abstract Production of reclaimed rubber of uniformly good physical and chemical properties is dependent first upon judicious classification and blending of raw materials. Grinding to a state in which no large particles are present, but without an excess of fines, allows a minimum devulcanizing time at a given temperature, decreases the tendency to depolymerize to an objectionable extent, and reduces the requirement for softeners. These conditions facilitate further processing to a smooth product of good quality with the desired plasticity and with optimum compounding, milling, calendering, and tubing characteristics. Devulcanization at high temperatures tends to reduce the tensile slightly and to increase the elongation as compared with treatment at lower temperatures. Alkali reclaims require efficient washing to remove residual caustic and the recovery of fines from the wash liquors involves problems of settling and filtration or screening. Drying of wet-processed reclaims at high temperatures or for an excessively long time results in tacky products, just as does over-devulcanization. A minimum amount of milling and refining at normal temperatures is desirable to preserve the quality, therefore previous processing should be thorough and uniform. Some comparisons of types of equipment are made and some desirable future developments are discussed.

The Physical and Chemical Properties of MoS2(1-x)Te2x Alloy Synthesized by Co-sputtering and Chalcogenization and Their Dependence on Fabrication Conditions

MRS Advances ◽  
2020 ◽  
Vol 5 (31-32) ◽  
pp. 1635-1642 ◽  
Author(s):  
Yusuke Hibino ◽  
Kota Yamazaki ◽  
Yusuke Hashimoto ◽  
Yuya Oyanagi ◽  
Naomi Sawamoto ◽  
...  
Keyword(s):  
Phase Separation ◽  
Band Structure ◽  
Chemical Properties ◽  
Physical Structure ◽  
Band Alignment ◽  
Physical And Chemical Properties ◽  
Amorphous Nature ◽  
Physical And Chemical ◽  
Structure Evaluation ◽  
And Chemical Properties

ABSTRACTMoS2(1-x)Te2x, the alloy of MoS2 and MoTe2 was fabricated with just co-sputtering and the combination of co-sputtering with following thermal treatment in chalcogen ambient. Phase separation, where MoTe2 was segregated rather than S and Te being uniformly distributed, was observed for some samples. From the physical structure evaluation using XRD, it was shown that the samples that was sulfurized after unintentional oxidation during shelf time exhibited no phase separation. It was suggested that oxidation of Mo or amorphous nature of the film at the chalcogenization stage may prevent the phase separation. In addition, some samples were stored in desiccator for stability evaluation. It was revealed that the samples undergo oxidation to different extent depending on the carrier gas used in tellurization. Finally, the bandgap and band structure was evaluated for samples with different Te concentration. The bandgap showed bowing behavior for different Te concentration with the bowing parameter b = -1.21 eV. Combined with the bandgap evaluation, the valence analysis with XPS showed that the band structure shifted according to the Te concentration. The shift in bandgap allows flexible band alignment which is expected to expand the materials applicability.

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