Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International



Home > Press > Breakthrough in the optical properties of MXenes - two-dimensional heterostructures provide new ideas

OA Z-scan results of Nb2C/MoS2 and Nb2C with an excitation wavelength of (a) 1300 nm and (b) 1550 nm. The corresponding nonlinear transmittance curves under excitation optical intensity are shown in (c) and (d). (e) Fitted nonlinear optics parameter for comparison .

CREDIT
OEA
OA Z-scan results of Nb2C/MoS2 and Nb2C with an excitation wavelength of (a) 1300 nm and (b) 1550 nm. The corresponding nonlinear transmittance curves under excitation optical intensity are shown in (c) and (d). (e) Fitted nonlinear optics parameter for comparison . CREDIT OEA

Abstract:
A new publication from Opto-Electronic Advances, 10.29026/oea.2023.220162 discusses a breakthrough in the optical properties of MXenes.

Breakthrough in the optical properties of MXenes - two-dimensional heterostructures provide new ideas

Sichuan, China | Posted on May 12th, 2023

Two-dimensional layered materials are a novel class of materials that exhibit strong and distinctive light-matter interactions, offering broad application prospects in optoelectronic devices and photonic elements. These materials encompass graphene, transition metal sulfides (TMDs), black phosphorus (BP), and others, which demonstrate exceptional performance characteristics such as ultrafast and wide-spectrum response, robust excitonic optical properties, and tunable direct optical band gaps.



MXenes represent a newly discovered class of two-dimensional layered materials, which showcase fascinating and tunable optical, chemical, and electronic properties, and exhibit diverse applications in fields such as photoelectricity, photothermal conversion, and photovoltaics. Furthermore, MXenes demonstrate strong nonlinear optical responses, and their nonlinear optical absorption can be adjusted by thickness, excitation wavelength, and surface groups.



In addition, the construction of two-dimensional heterostructures represents an important strategy for enhancing the optoelectronic performance of devices that utilize two-dimensional materials. By employing careful design, the advantageous properties of each component within the heterostructure can be preserved, while novel characteristics such as charge transfer or energy transfer can be generated via the interfacial effects.



The authors of this article propose a simple and effective method for preparing Nb2C/MoS2 heterostructures with enhanced both linear and nonlinear optical properties.



In this work, MoS2 nanocrystals were successfully grown on the surface of Nb2C nanosheets in situ, resulting in the construction of a two-dimensional Nb2C/MoS2 heterostructure. It was found that this heterostructure outperformed pure Nb2C in both linear and nonlinear optics.



The study reveals that the surface group of Nb2C can modulate the work function of Nb2C/MoS2, which affects the charge transfer and energy alignment between Nb2C and MoS2. As a result, Nb2C/MoS2 inherits the advantages of Nb2C and MoS2 at different wavelengths and exhibits enhanced broadband optical absorption characteristics.



Furthermore, the research demonstrates that hole transfer from Nb2C to MoS2 leads to modulation of the nonlinear optical response in the heterostructure. It also proves that Nb2C/MoS2 has stronger and tunable near-infrared nonlinear optical absorption characteristics than pure Nb2C. The nonlinear absorption coefficient of Nb2C/MoS2 is more than twice that of pure Nb2C, as illustrated in Figure 1. This study presents an effective approach for the development of broadband optoelectronic devices and optical modulators. In particular, the findings provide a strong basis for the utilization of MXenes, which exhibit excellent photoelectric performance, in the field of optoelectronics.



# # # # # #

This work was completed by the team of Hunan Key Laboratory of Nanophotonics and Devices at Central South University, led by Prof. Jun He. The team has cultivated 5 national-level young talents and 12 provincial-level talents, and independently built a photoelectron spectroscopy measurement system with femtosecond time resolution, three-dimensional spin resolution, and energy-momentum resolution.

Prof. Jun He obtained his Ph.D. from the National University of Singapore in 2006. In recognition of his achievements, he was awarded the National Outstanding Youth Science Foundation in 2012 and was selected as a Furong Scholar Distinguished Professor of Hunan Province in 2016. Currently, he focuses his research on the ultrafast phenomena and nonlinear optics of nanoscale materials, as well as the femtosecond laser fabrication of micro-nano structures and two-dimensional material neuromorphic transistor. His extensive work in this area has resulted in the publication of over 240 papers in renowned international journals such as Nature Commun. and Phys. Rev. Lett., with over 6,700 citations.

Dr. Yingwei Wang obtained his Ph.D. from Central South University in 2017. He subsequently completed postdoctoral fellow training at Shenzhen University, Jinan University, and Korea University. Currently, he serves as a lecturer in the School of Physics and Electronics at Central South University, where he focuses his research on the Nanophotonics of low-dimensional materials. In recognition of his contributions to the field, he was awarded the Outstanding Youth Science Foundation of Hunan Province in 2022.

####

About Compuscript Ltd
Opto-Electronic Advances (OEA) is a high-impact, open access, peer reviewed monthly SCI journal with an impact factor of 8.933 (Journal Citation Reports for IF2021). Since its launch in March 2018, OEA has been indexed in SCI, EI, DOAJ, Scopus, CA and ICI databases over the time and expanded its Editorial Board to 36 members from 17 countries and regions (average h-index 49).

The journal is published by The Institute of Optics and Electronics, Chinese Academy of Sciences, aiming at providing a platform for researchers, academicians, professionals, practitioners, and students to impart and share knowledge in the form of high quality empirical and theoretical research papers covering the topics of optics, photonics and optoelectronics.

For more information, please click here

Contacts:
Conor Lovett
Compuscript Ltd

Office: 353-614-75205

Copyright © Compuscript Ltd

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

Wang YD, Wang YW, Dong YL, Zhou L, Kang JL et al. 2D Nb2CTx MXene/MoS2 heterostructure construction for nonlinear optical absorption modulation. Opto-Electron Adv 6, 220162 (2023). doi: 10.29026/oea.2023.220162 :

Related News Press

News and information

Chung-Ang University researchers develop novel DNA biosensor for early diagnosis of cervical cancer: The electrochemical sensor, made of a graphitic nano-onion/molybdenum disulfide nanosheet composite, detects human papillomavirus (HPV)-16 and HPV-18, with high specificity September 8th, 2023

New compound unleashes the immune system on metastases September 8th, 2023

Machine learning contributes to better quantum error correction September 8th, 2023

Tests find no free-standing nanotubes released from tire tread wear September 8th, 2023

2 Dimensional Materials

University of Chicago scientists invent smallest known way to guide light: 2D optical waveguides could point way to new technology August 11th, 2023

Ribbons of graphene push the materialís potential: A new technique developed at Columbia offers a systematic evaluation of twist angle and strain in layered 2D materials August 11th, 2023

Two types of ultrafast mode-locking operations generation from an Er-doped fiber laser based on germanene nanosheets July 21st, 2023

Understanding the diverse industrial applications of materials science: Materials Science A Field of Diverse Industrial Applications July 21st, 2023

Possible Futures

Chung-Ang University researchers develop novel DNA biosensor for early diagnosis of cervical cancer: The electrochemical sensor, made of a graphitic nano-onion/molybdenum disulfide nanosheet composite, detects human papillomavirus (HPV)-16 and HPV-18, with high specificity September 8th, 2023

New compound unleashes the immune system on metastases September 8th, 2023

Machine learning contributes to better quantum error correction September 8th, 2023

Tests find no free-standing nanotubes released from tire tread wear September 8th, 2023

Chip Technology

University of Chicago scientists invent smallest known way to guide light: 2D optical waveguides could point way to new technology August 11th, 2023

Researchers discover a potential application of unwanted electronic noise in semiconductors: Random telegraph noises in vanadium-doped tungsten diselenide can be tuned with voltage polarity August 11th, 2023

The present and future of computing get a boost from new research July 21st, 2023

Scientists edge toward scalable quantum simulations on a photonic chip: A system using photonics-based synthetic dimensions could be used to help explain complex natural phenomena June 30th, 2023

Optical computing/Photonic computing

Chung-Ang University researchers develop novel DNA biosensor for early diagnosis of cervical cancer: The electrochemical sensor, made of a graphitic nano-onion/molybdenum disulfide nanosheet composite, detects human papillomavirus (HPV)-16 and HPV-18, with high specificity September 8th, 2023

University of Chicago scientists invent smallest known way to guide light: 2D optical waveguides could point way to new technology August 11th, 2023

Scientists edge toward scalable quantum simulations on a photonic chip: A system using photonics-based synthetic dimensions could be used to help explain complex natural phenomena June 30th, 2023

USTC enhances fluorescence brightness of single silicon carbide spin color centers June 9th, 2023

Discoveries

Electronic detection of DNA nanoballs enables simple pathogen detection Peer-Reviewed Publication September 8th, 2023

Training quantum computers: physicists win prestigious IBM Award September 8th, 2023

Unlocking quantum potential: Harnessing high-dimensional quantum states with QDs and OAM: Generation of nearly deterministic OAM-based entangled states offers a bridge between photonic technologies for quantum advancements September 8th, 2023

Tests find no free-standing nanotubes released from tire tread wear September 8th, 2023

Announcements

Electronic detection of DNA nanoballs enables simple pathogen detection Peer-Reviewed Publication September 8th, 2023

Training quantum computers: physicists win prestigious IBM Award September 8th, 2023

Machine learning contributes to better quantum error correction September 8th, 2023

Tests find no free-standing nanotubes released from tire tread wear September 8th, 2023

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers/Posters

Electronic detection of DNA nanoballs enables simple pathogen detection Peer-Reviewed Publication September 8th, 2023

Unlocking quantum potential: Harnessing high-dimensional quantum states with QDs and OAM: Generation of nearly deterministic OAM-based entangled states offers a bridge between photonic technologies for quantum advancements September 8th, 2023

Chung-Ang University researchers develop novel DNA biosensor for early diagnosis of cervical cancer: The electrochemical sensor, made of a graphitic nano-onion/molybdenum disulfide nanosheet composite, detects human papillomavirus (HPV)-16 and HPV-18, with high specificity September 8th, 2023

New compound unleashes the immune system on metastases September 8th, 2023

Photonics/Optics/Lasers

Unlocking quantum potential: Harnessing high-dimensional quantum states with QDs and OAM: Generation of nearly deterministic OAM-based entangled states offers a bridge between photonic technologies for quantum advancements September 8th, 2023

Chung-Ang University researchers develop novel DNA biosensor for early diagnosis of cervical cancer: The electrochemical sensor, made of a graphitic nano-onion/molybdenum disulfide nanosheet composite, detects human papillomavirus (HPV)-16 and HPV-18, with high specificity September 8th, 2023

University of Chicago scientists invent smallest known way to guide light: 2D optical waveguides could point way to new technology August 11th, 2023

Ultrafast lasers for materials processing August 11th, 2023

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project