Title :
Tunable morphology and photoluminescence of uniform α-Si3N4 microribbons
Author :
Huofei Qian ; Yingchun Zhu ; Zhiyong Mao ; Junwu Xiao ; Jingjing Chen ; Linlin Zhang
Author_Institution :
Grad. Sch. of Chinese Acad. of Sci., Beijing, China
fDate :
7/1/2012 12:00:00 AM
Abstract :
Tunable morphology and photoluminescence of uniform α-Si3N4 microribbons were obtained by a high temperature chemical vapour deposition method. Long, extra-wide and smooth ribbons with fine crystallinity exhibited variable aspect ratios on the dependence of deposition temperatures. The ribbons were identified to grow along the [210] direction and oxygen component was traced in the crystals. Tunable blue emission was demonstrated for these ribbons. The relationship between the deposition temperature, aspect ratio, oxygen content and photoluminescence are discussed.
Keywords :
chemical vapour deposition; crystal growth from vapour; crystal microstructure; crystal morphology; high-temperature effects; narrow band gap semiconductors; photoluminescence; semiconductor growth; silicon compounds; [210] direction; blue emission; extra-wide ribbons; fine crystallinity; high-temperature chemical vapour deposition method; morphology; narrow band gap semiconductors; photoluminescence; smooth ribbons; uniform α-Si3N4 microribbons;
Journal_Title :
Micro & Nano Letters, IET
DOI :
10.1049/mnl.2012.0349
