Enhanced photorefractive performance of polymeric composites through surface plasmon effects of gold nanoparticles

We investigated the photorefractivity enhancement of polymeric composites by introducing gold nanoparticles (NPs). The gold NPs enhance the photocharge generation rate of sensitizers through plasmon resonance coupling achieved between NPs and sensitizers. Systematic studies show that the presence of...

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Bibliographic Details
Published in:Optics letters 2014-08, Vol.39 (15), p.4571-4574
Main Authors: Choi, Jongwan, Ji, Seok-Hwan, Choi, Chil-Sung, Oh, Jin-Woo, Kim, Felix Sunjoo, Kim, Nakjoong
Format: Article
Language:English
Subjects:
Formations
Gold
Modulation
Nanoparticles
Photoconductivity
Photorefractivity
Plasmons
Polymer matrix composites
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Summary:We investigated the photorefractivity enhancement of polymeric composites by introducing gold nanoparticles (NPs). The gold NPs enhance the photocharge generation rate of sensitizers through plasmon resonance coupling achieved between NPs and sensitizers. Systematic studies show that the presence of gold NPs has increased photocharge generation efficiency, photoconductivity, diffraction efficiency, refractive index modulation, and photorefractive (PR) grating formation rate. The gold-NP-doped PR sample exhibits 2 times larger photocharge generation efficiency and photoconductivity, and 2.5 times faster PR grating formation rate compared to the control sample without the NPs.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.39.004571