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Title: Observations on size confinement effect in B-C-N nanoparticles embedded in mesoporous silica channels

Fluorescent B-C-N/silica nanoparticles were synthesized by solution impregnation method. Effect of B-C-N particle size on the optical properties was investigated by varying the silica pore sizes. Formation of B-C-N nanoparticles within the mesoporous matrix is confirmed by x-ray diffraction, transmission electron microscopy, and Fourier transform infrared spectroscopy. Furthermore, a remarkable blue-shift in emission peak centres with decreasing pore size in conjugation with band gap modification, ascribed to the size confinement effect. A detailed analysis of experimental results by theoretically defined confinement models demonstrates that the B-C-N nanoparticles in the size range of 3–13 nm falls within the confinement regime. This work demonstrated the experimental evidence of the size confinement effect in smaller size B-C-N nanoparticles.
Authors:
; ;  [1] ;  [2]
  1. Advanced Glass Group, Research Institute for Ubiquitous Energy Devices, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31, Midorigaoka, Ikeda, Osaka 563-8577 (Japan)
  2. Materials Science Research Group, Research Institute for Ubiquitous Energy Devices, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31, Midorigaoka, Ikeda, Osaka 563-8577 (Japan)
Publication Date:
OSTI Identifier:
22303729
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 1; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; BORON; CARBON; CONFINEMENT; FLUORESCENCE; FOURIER TRANSFORM SPECTROMETERS; MATRIX MATERIALS; MODIFICATIONS; NANOPARTICLES; NANOSTRUCTURES; NITROGEN; OPTICAL PROPERTIES; PARTICLE SIZE; POROUS MATERIALS; SILICA; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION