Defect Engineering in Metastable Phases of Transition‐Metal Dichalcogenides for Electrochemical Applications

2020 ◽  
Vol 15 (23) ◽  
pp. 3961-3972
Author(s):  
Ran Wang ◽  
Jiecai Han ◽  
Bo Yang ◽  
Xianjie Wang ◽  
Xinghong Zhang ◽  
...  
Keyword(s):  
Transition Metal ◽  
Transition Metal Dichalcogenides ◽  
Metastable Phases ◽  
Defect Engineering ◽  
Electrochemical Applications ◽  
Metal Dichalcogenides

Synergistic vacancy defects and mechanical strain for the modulation of the mechanical, electronic and optical properties of monolayer tungsten disulfide

2021 ◽  
Vol 23 (10) ◽  
pp. 6298-6308
Author(s):  
Chan Gao ◽  
Xiaoyong Yang ◽  
Ming Jiang ◽  
Lixin Chen ◽  
Zhiwen Chen ◽  
...  
Keyword(s):  
Optical Properties ◽  
Transition Metal ◽  
Mechanical Strain ◽  
Transition Metal Dichalcogenides ◽  
Strain Engineering ◽  
Tungsten Disulfide ◽  
Defect Engineering ◽  
Vacancy Defects ◽  
Electronic And Optical Properties ◽  
Metal Dichalcogenides

The combination of defect engineering and strain engineering for the modulation of the mechanical, electronic and optical properties of monolayer transition metal dichalcogenides (TMDs).

scholarly journals Robust trap effect in transition metal dichalcogenides for advanced multifunctional devices

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Lei Yin ◽  
Peng He ◽  
Ruiqing Cheng ◽  
Feng Wang ◽  
Fengmei Wang ◽  
...  
Keyword(s):  
Transition Metal ◽  
High Performance ◽  
Infrared Detector ◽  
Transition Metal Dichalcogenides ◽  
Two Dimensional ◽  
Electric Transport ◽  
Defect Engineering ◽  
Fast Switching ◽  
Metal Dichalcogenides ◽  
Poor Stability

Abstract Defects play a crucial role in determining electric transport properties of two-dimensional transition metal dichalcogenides. In particular, defect-induced deep traps have been demonstrated to possess the ability to capture carriers. However, due to their poor stability and controllability, most studies focus on eliminating this trap effect, and little consideration was devoted to the applications of their inherent capabilities on electronics. Here, we report the realization of robust trap effect, which can capture carriers and store them steadily, in two-dimensional MoS2xSe2(1-x) via synergistic effect of sulphur vacancies and isoelectronic selenium atoms. As a result, infrared detection with very high photoresponsivity (2.4 × 105 A W−1) and photoswitching ratio (~108), as well as nonvolatile infrared memory with high program/erase ratio (~108) and fast switching time, are achieved just based on an individual flake. This demonstration of defect engineering opens up an avenue for achieving high-performance infrared detector and memory.

scholarly journals Thermal and Photo Sensing Capabilities of Mono- and Few-Layer Thick Transition Metal Dichalcogenides

Micromachines ◽  
2020 ◽  
Vol 11 (7) ◽  
pp. 693
Author(s):  
Andrew Voshell ◽  
Mauricio Terrones ◽  
Mukti Rana
Keyword(s):  
Transition Metal ◽  
2D Materials ◽  
Transition Metal Dichalcogenides ◽  
Cost Effective ◽  
Defect Engineering ◽  
Figures Of Merit ◽  
Sensing Applications ◽  
Metal Dichalcogenides ◽  
Thermal Sensing ◽  
Novel Applications

Two-dimensional (2D) materials have shown promise in various optical and electrical applications. Among these materials, semiconducting transition metal dichalcogenides (TMDs) have been heavily studied recently for their photodetection and thermoelectric properties. The recent progress in fabrication, defect engineering, doping, and heterostructure design has shown vast improvements in response time and sensitivity, which can be applied to both contact-based (thermocouple), and non-contact (photodetector) thermal sensing applications. These improvements have allowed the possibility of cost-effective and tunable thermal sensors for novel applications, such as broadband photodetectors, ultrafast detectors, and high thermoelectric figures of merit. In this review, we summarize the properties arisen in works that focus on the respective qualities of TMD-based photodetectors and thermocouples, with a focus on their optical, electrical, and thermoelectric capabilities for using them in sensing and detection.

scholarly journals Defect engineering of two-dimensional transition metal dichalcogenides

2D Materials ◽  
2016 ◽  
Vol 3 (2) ◽  
pp. 022002 ◽  
Author(s):  
Zhong Lin ◽  
Bruno R Carvalho ◽  
Ethan Kahn ◽  
Ruitao Lv ◽  
Rahul Rao ◽  
...  
Keyword(s):  
Transition Metal ◽  
Transition Metal Dichalcogenides ◽  
Two Dimensional ◽  
Defect Engineering ◽  
Metal Dichalcogenides

scholarly journals Direct synthesis of metastable phases of 2D transition metal dichalcogenides

2020 ◽  
Vol 49 (12) ◽  
pp. 3952-3980 ◽  
Author(s):  
Maria S. Sokolikova ◽  
Cecilia Mattevi
Keyword(s):  
Transition Metal ◽  
Critical Review ◽  
Direct Synthesis ◽  
Transition Metal Dichalcogenides ◽  
Phase Control ◽  
Metastable Phases ◽  
Crystal Phase ◽  
Chemical Mechanisms ◽  
Metal Dichalcogenides

This critical review investigates the synthesis strategies designed to achieve the crystal phase control in TMDs and discusses the chemical mechanisms that can drive the synthesis of metastable phases.

Two-dimensional transition metal dichalcogenides: interface and defect engineering

2018 ◽  
Vol 47 (9) ◽  
pp. 3100-3128 ◽  
Author(s):  
Zehua Hu ◽  
Zhangting Wu ◽  
Cheng Han ◽  
Jun He ◽  
Zhenhua Ni ◽  
...  
Keyword(s):  
Optical Properties ◽  
Transition Metal ◽  
Electronic Devices ◽  
Transition Metal Dichalcogenides ◽  
Two Dimensional ◽  
Defect Engineering ◽  
Electronic And Optical Properties ◽  
Recent Advances ◽  
Metal Dichalcogenides

This review summarizes the recent advances in understanding the effects of interface and defect engineering on the electronic and optical properties of TMDCs, as well as their applications in advanced (opto)electronic devices.

Defect Engineering of Two-Dimensional Transition-Metal Dichalcogenides: Applications, Challenges, and Opportunities

ACS Nano ◽  
2021 ◽  
Vol 15 (2) ◽  
pp. 2165-2181
Author(s):  
Qijie Liang ◽  
Qian Zhang ◽  
Xiaoxu Zhao ◽  
Meizhuang Liu ◽  
Andrew T. S. Wee
Keyword(s):  
Transition Metal ◽  
Transition Metal Dichalcogenides ◽  
Two Dimensional ◽  
Defect Engineering ◽  
Challenges And Opportunities ◽  
Metal Dichalcogenides
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