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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 20 — Oct. 7, 2013
  • pp: 23416–23424

Tunable and stable UV-NIR photoluminescence from annealed SiOx with Si nanoparticles

Kung-Hsuan Lin, Sz-Chian Liou, Wei-Liang Chen, Chung-Lun Wu, Gong-Ru Lin, and Yu-Ming Chang  »View Author Affiliations

Optics Express, Vol. 21, Issue 20, pp. 23416-23424 (2013)

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We demonstrate stable and tunable light emission in ultraviolet to near infrared regime by using annealed SiOx sample. By adjusting the ratio of Si and O of SiOx, different wavelengths such as ultraviolet, visible and near infrared photoluminescence can be tuned. From the results of transmission electron microscope, various sizes (1~4 nm) of the embedded Si nanoparticles were formed. Nanoparticles with smaller sizes were indeed formed for UV-blue emitting samples and the origin of light emission may be misattributed to the quantum confinement effects. However, we found the efficient and stable light emission in UV-blue regime, with lifetime on the order of nanoseconds, is dominantly from the defects.

© 2013 Optical Society of America

OCIS Codes
(160.6000) Materials : Semiconductor materials
(250.5230) Optoelectronics : Photoluminescence
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence

ToC Category:

Original Manuscript: July 16, 2013
Revised Manuscript: September 17, 2013
Manuscript Accepted: September 17, 2013
Published: September 25, 2013

Kung-Hsuan Lin, Sz-Chian Liou, Wei-Liang Chen, Chung-Lun Wu, Gong-Ru Lin, and Yu-Ming Chang, "Tunable and stable UV-NIR photoluminescence from annealed SiOx with Si nanoparticles," Opt. Express 21, 23416-23424 (2013)

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