Highly sensitive infrared detector based on a two-dimensional heterojunction

2021 ◽  
Vol 14 (1) ◽  
pp. 1-13
Author(s):  
ZHANG Jin-yue ◽  
◽  
LU Jun-peng ◽  
NI Zhen-hua
Keyword(s):  
Infrared Detector ◽  
Two Dimensional ◽  
Highly Sensitive

scholarly journals Terahertz characterization of two-dimensional low-conductive layers enabled by metal gratings

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Prashanth Gopalan ◽  
Yunshan Wang ◽  
Berardi Sensale-Rodriguez
Keyword(s):  
Optical Transmission ◽  
Terahertz Spectroscopy ◽  
Design Guidelines ◽  
Two Dimensional ◽  
Highly Sensitive ◽  
Transmission Measurements ◽  
Metal Gratings ◽  
Low Sensitivity ◽  
Non Destructive

AbstractWhile terahertz spectroscopy can provide valuable information regarding the charge transport properties in semiconductors, its application for the characterization of low-conductive two-dimensional layers, i.e., σs <  < 1 mS, remains elusive. This is primarily due to the low sensitivity of direct transmission measurements to such small sheet conductivity levels. In this work, we discuss harnessing the extraordinary optical transmission through gratings consisting of metallic stripes to characterize such low-conductive two-dimensional layers. We analyze the geometric tradeoffs in these structures and provide physical insights, ultimately leading to general design guidelines for experiments enabling non-contact, non-destructive, highly sensitive characterization of such layers.

Two-dimensional Imaging of Ultraweak Photon Emission from Germinating Soybean Seedlings with a Highly Sensitive CCD Camera

1997 ◽  
Vol 65 (3) ◽  
pp. 535-537 ◽  
Author(s):  
Masaki Kobayashi ◽  
B. Devaraj ◽  
Masashi Usa ◽  
Yukina Tanno ◽  
Motohiro Takeda ◽  
...  
Keyword(s):  
Photon Emission ◽  
Ccd Camera ◽  
Two Dimensional ◽  
Soybean Seedlings ◽  
Highly Sensitive

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.

Ultrafast and Highly Sensitive Dual-Channel FET Photodetector Based on a Two-Dimensional MoS2 Homojunction

2021 ◽  
Author(s):  
Yufeng Shan ◽  
Ziwei Yin ◽  
Yi Zhang ◽  
Changyi Pan ◽  
Huiyong Deng ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Dual Channel ◽  
Highly Sensitive

scholarly journals Correction: Two-dimensional semiconducting covalent organic nanosheets for highly sensitive and stable NO2 sensing under humid conditions

2020 ◽  
Vol 8 (41) ◽  
pp. 21882-21882
Author(s):  
Woo Chul Ko ◽  
Min-Sung Kim ◽  
Yong Jung Kwon ◽  
Jeehun Jeong ◽  
Won Rae Kim ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Highly Sensitive

Correction for ‘Two-dimensional semiconducting covalent organic nanosheets for highly sensitive and stable NO2 sensing under humid conditions’ by Woo Chul Ko et al., J. Mater. Chem. A, 2020, 8, 19246–19253, DOI: 10.1039/D0TA07066A.

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