skip to main content

SciTech ConnectSciTech Connect

Title: Blue photoluminescence enhancement in laser-irradiated 6H-SiC at room temperature

Blue photoluminescence (PL) of 6H-SiC irradiated by an ultraviolet laser can be observed at room temperature in dark condition. PL spectra with Gaussian fitting curve of the irradiated SiC show that blue luminescence band (∼440 nm) is more pronounced than other bands. The blue PL enhancement is the combined result of the improved shallow N-donor energy level and the unique surface state with Si nanocrystals and graphene/Si composite due to the effect of photon energy input by the short-wavelength laser irradiation. The study can provide a promising route towards the preparation of well-controlled blue photoluminescence material for light-emitting devices.
Authors:
; ; ;  [1] ;  [2]
  1. Institute of Laser Engineering, Beijing University of Technology, Beijing 100124 (China)
  2. College of Applied Science, Beijing University of Technology, Beijing 100124 (China)
Publication Date:
OSTI Identifier:
22280543
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 4; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; COMPOSITE MATERIALS; EMISSION SPECTRA; ENERGY LEVELS; GRAPHENE; IRRADIATION; LASER RADIATION; NANOSTRUCTURES; PHOTOLUMINESCENCE; SILICON; SILICON CARBIDES; SURFACES; TEMPERATURE RANGE 0273-0400 K; ULTRAVIOLET RADIATION; VISIBLE RADIATION