NSF of ChinaNational Natural Science Foundation of China (NSFC) [61274140, 61306003]; NSF of Guangdong ProvinceNational Natural Science Foundation of Guangdong Province [S2011010001853]; Project of DEGP [2012KJCX0075]
机构署名：
本校为其他机构
院系归属：
物理科学与技术学院
摘要：
Near- infrared (NIR) luminescent Si-rich oxynitride nanostructures were fabricated by very high frequency plasma enhanced chemical vapor deposition followed by thermal annealing. By increasing the annealing temperature from 600 degrees C to 1100 degrees C, the intensity of NIR emission can be remarkably improved by more than three times. Si nanocrystals (NCs) with diameters ranging from 2 nm to 4 nm are found to play a decisive role in the enhanced NIR emission. The PLE spectra indicate a band-to-band excitation process with a quantum confinement feature in Si nanocrystals. Combining with the ...
