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Open AccessArticle

Effect of Nitrogen Doping on the Photoluminescence of Amorphous Silicon Oxycarbide Films

School of Materials Science and Engineering, Hanshan Normal University, Chaozhou 521041, China
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Micromachines 2019, 10(10), 649; https://doi.org/10.3390/mi10100649
Received: 26 August 2019 / Revised: 24 September 2019 / Accepted: 26 September 2019 / Published: 27 September 2019
(This article belongs to the Special Issue Silicon Photonics Bloom)
The effect of nitrogen doping on the photoluminescence (PL) of amorphous SiCxOy films was investigated. An increase in the content of nitrogen in the films from 1.07% to 25.6% resulted in red, orange-yellow, white, and blue switching PL. Luminescence decay measurements showed an ultrafast decay dynamic with a lifetime of ~1 ns for all the nitrogen-doped SiCxOy films. Nitrogen doping could also widen the bandgap of SiCxOy films. The microstructure and the elemental compositions of the films were studied by obtaining their Raman spectra and their X-ray photoelectron spectroscopy, respectively. The PL characteristics combined with an analysis of the chemical bonds configurations present in the films suggested that the switching PL was attributed to the change in defect luminescent centers resulting from the chemical bond reconstruction as a function of nitrogen doping. Nitrogen doping provides an alternative route for designing and fabricating tunable and efficient SiCxOy-based luminescent films for the development of Si-based optoelectronic devices. View Full-Text
Keywords: photoluminescence; amorphous silicon oxycarbide; nitrogen doping; defect; plasma enhanced chemical vapor deposition photoluminescence; amorphous silicon oxycarbide; nitrogen doping; defect; plasma enhanced chemical vapor deposition
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MDPI and ACS Style

Song, J.; Huang, R.; Zhang, Y.; Lin, Z.; Zhang, W.; Li, H.; Song, C.; Guo, Y.; Lin, Z. Effect of Nitrogen Doping on the Photoluminescence of Amorphous Silicon Oxycarbide Films. Micromachines 2019, 10, 649.

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