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Photoluminescence: Fluorescence and Phosphorescence01:23

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Low-energy Cathodoluminescence for OxyNitride Phosphors
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Light-Matter Interactions in Phosphorene.

Junpeng Lu1,2, Jiong Yang3, Alexandra Carvalho2

  • 1Department of Physics, National University of Singapore , 2 Science Drive 3, 117542 Singapore.

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|September 3, 2016
PubMed
Summary
This summary is machine-generated.

Phosphorene, a 2D material, shows tunable optoelectronic properties and strong light interactions, making it promising for next-generation nanooptoelectronics. Laser-induced oxidation enables localized bandgap engineering for microphotonics and high-performance photodetectors.

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Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Nanotechnology

Background:

  • Phosphorene, a 2D material derived from black phosphorus, exhibits unique electronic and optical properties distinct from its bulk form.
  • It is a rare monoelemental 2D crystal, stable in various forms and comparable to graphene and transition metal dichalcogenides (TMDs).
  • Research is driven by its tunable bandgap, anisotropic behavior, and high carrier mobility, positioning it for post-graphene nanooptoelectronics.

Purpose of the Study:

  • To review the interactions between light and phosphorene, elucidating mechanisms and applications.
  • To explore phosphorene's fundamental optical properties, including layer-dependent electronic band structures and anisotropy.
  • To discuss the challenges and opportunities in utilizing phosphorene's optoelectronic potential, particularly in device applications.

Main Methods:

  • Theoretical calculations to determine electronic band structures and optical properties.
  • Experimental observations of many-body effects like excitons and trions.
  • Laser-induced oxidation for controlled bandgap engineering and microphotonics fabrication.

Main Results:

  • Phosphorene's electronic bandgap varies significantly with layer number (0.3 eV to 2.1 eV), enabling strong light-matter interactions in visible and IR frequencies.
  • Excitonic and trionic many-body effects have been experimentally observed and analyzed.
  • Laser-induced oxidation allows for localized bandgap engineering, leading to demonstrated microphotonics and high-performance photodetectors.

Conclusions:

  • Phosphorene's tunable bandgap and strong light interactions make it a key material for future nanooptoelectronics and nanophotonics.
  • Controlled oxidation via laser techniques offers a pathway for advanced optical property manipulation and device fabrication.
  • Phosphorene demonstrates significant potential for efficient photoelectric conversion, enabling high-performance photodetectors and photovoltaic applications.