• HOME
  • NEWS
    • BIOENGINEERING
    • SCIENCE NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • FORUM
    • INSTAGRAM
    • TWITTER
  • CONTACT US
Tuesday, May 24, 2022
BIOENGINEER.ORG
No Result
View All Result
  • Login
  • HOME
  • NEWS
    • BIOENGINEERING
    • SCIENCE NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • FORUM
    • INSTAGRAM
    • TWITTER
  • CONTACT US
  • HOME
  • NEWS
    • BIOENGINEERING
    • SCIENCE NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • FORUM
    • INSTAGRAM
    • TWITTER
  • CONTACT US
No Result
View All Result
Bioengineer.org
No Result
View All Result
Home NEWS Science News Chemistry

High performance polarization sensitive photodetectors on 2D β-InSe

Bioengineer by Bioengineer
July 13, 2021
in Chemistry
0
Share on FacebookShare on TwitterShare on LinkedinShare on RedditShare on Telegram

IMAGE

Credit: @Science China Press

To extract the polarization information of incident light, polarization-sensitive photodetectors (PSPDs) exhibit significant practical application in both military and civil areas, like bio-imaging, remote sensing, night vision, and helmet-mounted sight for fighter plane. Optical filters combined with polarizers are usually needed for traditional photodetectors to realize polarized light detection. But it will increase the size and complexity of devices. To obtain a small-size PSPD, one-dimensional (1D) nanomaterials with geometrical anisotropy, such as nanowires, nanoribbons, and nanotubes, have been used as the sensitive materials for PSPDs, which can directly identify the polarization information of incident light without any optical filters and polarizers. However, it is not an easy task for patterning and integrating these 1D nanochannels for mass production of PSPDs.

Atomically layered two-dimensional (2D) semiconductors with low crystal symmetry show great potential in micro-nano PSPDs recently due to their intrinsically in-plane anisotropic properties. For example, SnS, ReS2, GeS2, GeAs2, AsP and black phosphorus (BP) exhibit an obvious in-plane anisotropy behavior in carrier transport, thermal conductivity, electrical conductivity, thermoelectric transport and optical absorption processes. They have potential applications in polarization sensitive photodetectors, polarization ultrafast lasers, polarization field effect transistors and polarization sensors. Among them, BP-based PSPDs have the highest photocurrent anisotropy ratio of 0.59, benefitting from its high carrier mobility and the strong in-plane anisotropy coming from the low-symmetry puckered honeycomb crystal structure. But BP-based optoelectronic devices are hard to get rid of the ambient degradation problem. 2D layered indium selenide (InSe), which also has high carrier mobility and is more stable than BP in atmospheric environment, exhibit huge potential application in high performance optoelectronic and electronic devices. In addition, the anisotropic optical and electronic properties of 2D layered InSe have already been demonstrated in 2019. Worth noting that InSe crystal has three specific polytypes, which are in β, γ, and ε phases, respectively. Among them, InSe in γ-phase and ε-phase belong to symmetry groups. Only the InSe in β-phase (β-InSe) belongs to the nonsymmetry point group, indicating that β-InSe exhibits better anisotropic optoelectronic properties than the other two polytypes.

In order to achieve high performance PSPDs with good stability, the advanced optoelectronic devices research team led by Professor Han Zhang from the Shenzhen University prepare the stable p-type 2D layered β-InSe via temperature gradient method. The anisotropic nature of the β-InSe has been revealed by angle-resolved Raman. The intensity of the out-of-plane and in-plane vibrational modes exhibit pronounced periodic variations with the polarization angle of the excitations. Besides, a good stability of β-InSe flakes and their FET devices has been proved by long-time AFM measurement and multi-repeat electrical performance test. The experimental results (a-b) are in good agreement with the theoretical calculations (c-d) that there are strong anisotropic transport and polarization-sensitive photoresponse in 2D layered β-InSe flakes. The photocurrent anisotropic ratio of the β-InSe photodetector reaches 0.70, which is ranking high among the single 2D material based PSPDs. The strong anisotropic Raman, transport and photoresponse properties of the β-InSe enable its great application potential in filter-free polarization sensitive photodetectors.

###

This research received funding from the National Key Research and Development Project, the National Natural Science Foundation of China, the Natural Science Foundation of Guangdong Province for Distinguished Young Scholars, the Innovation Team Project of Department of Education of Guangdong Province, the Science and Technology Innovation Commission of Shenzhen, and the Scientific Research Fund of Jilin Provincial Education Department.

See the article:

Zhinan Guo, Rui Cao, Huide Wang, Xi Zhang, Fanxu Meng, Xue Chen, Siyan Gao, David K Sang, Thi Huong Nguyen, Anh Tuan Duong, Jinlai Zhao, Yu-Jia Zeng, Sunglae Cho, Bing Zhao, Ping-Heng Tan, Han Zhang, Dianyuan Fan

High performance polarization sensitive photodetectors on two-dimensional β-InSe

Natl Sci Rev nwab098

https://doi.org/10.1093/nsr/nwab098

Media Contact
Han Zhang
[email protected]

Original Source

http://doi.org/10.1093/nsr/nwab098

Related Journal Article

http://dx.doi.org/10.1093/nsr/nwab098

Tags: Chemistry/Physics/Materials Sciences
Share12Tweet8Share2ShareShareShare2

Related Posts

Photo

The BrightFocus Foundation grants an Alzheimer’s Disease Research Standard Award to a CNIC project

May 24, 2022
Diverse Social Networks Reduce Accent Judgments #ASA182

Diverse social networks reduce accent judgments #ASA182

May 24, 2022

Insilico Medicine announces novel 3CL protease inhibitor preclinical candidate for COVID-19 treatment

May 24, 2022

Quantum Catalyzer (Q-Cat) launches in Maryland to bring promising quantum technologies to the real world

May 24, 2022
Please login to join discussion

POPULAR NEWS

  • Weybourne Atmospheric Observatory

    Breakthrough in estimating fossil fuel CO2 emissions

    46 shares
    Share 18 Tweet 12
  • Hidden benefit: Facemasks may reduce severity of COVID-19 and pressure on health systems, researchers find

    44 shares
    Share 18 Tweet 11
  • Sweet discovery could drive down inflammation, cancers and viruses

    43 shares
    Share 17 Tweet 11
  • Discovery of the one-way superconductor, thought to be impossible

    43 shares
    Share 17 Tweet 11

About

We bring you the latest biotechnology news from best research centers and universities around the world. Check our website.

Follow us

Tags

Weather/StormsUrbanizationVaccineVaccinesUrogenital SystemVehiclesWeaponryViolence/CriminalsZoology/Veterinary ScienceUniversity of WashingtonVirusVirology

Recent Posts

  • Aging (Aging-US) sponsors Systems Aging Gordon Research Conference
  • Type 2 diabetes accelerates brain aging and cognitive decline
  • While the fetal clock develops, mom’s behavior tells the time
  • Data contradict fears of COVID-19 vaccine effects on pregnancy and fertility
  • Contact Us

© 2019 Bioengineer.org - Biotechnology news by Science Magazine - Scienmag.

No Result
View All Result
  • Homepages
    • Home Page 1
    • Home Page 2
  • News
  • National
  • Business
  • Health
  • Lifestyle
  • Science

© 2019 Bioengineer.org - Biotechnology news by Science Magazine - Scienmag.

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In
Posting....