Growth and optical properties of ultra-long single-crystalline α-Si3N4 nanobelts

W. Yang, L. Zhang, Z. Xie, J. Li, H. Miao, L. An

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26 Scopus citations

Abstract

Ultra-long single-crystalline α-Si3N4 nanobelts were synthesized by catalyst-assisted crystallization of polymer-derived amorphous silicon carbonitride (SiCN). The obtained nanobelts were characterized using X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy and selected-area electron diffraction. The results revealed that the α-Si3N4 nanobelts are 20 to 40 nm in thickness, 400-600 nm in width and a few hundreds of micrometers to several millimeters in length, and grow along either the [011] or the [100] direction. Intense visible photoluminescence was observed over a spectrum ranging from 1.65 to 3.01 eV, which can be attributed to defects in the α-Si3N4 structure.

Original languageEnglish (US)
Pages (from-to)1419-1423
Number of pages5
JournalApplied Physics A: Materials Science and Processing
Volume80
Issue number7
DOIs
StatePublished - Apr 2005

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

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