Broadband optical limiting response of a graphene-PbS nanohybrid

Graphene-based materials have shown promising nonlinear optical properties in the visible range. To extend their nonlinear optical response to the near infrared (NIR) region, we prepared a new nanohybrid consisting of uniform PbS quantum dots (QDs) attached on the reduced graphene oxide, named rGO-P...

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Bibliographic Details
Published in:Nanoscale 2015-05, Vol.7 (20), p.9268-9274
Main Authors: Zhao, Min, Peng, Rui, Zheng, Qi, Wang, Qiang, Chang, Meng-Jie, Liu, Yu, Song, Ying-Lin, Zhang, Hao-Li
Format: Article
Language:English
Subjects:
Broadband
Constraining
Graphene
Infrared
Nanostructure
Nonlinearity
Optical properties
Oxides
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Summary:Graphene-based materials have shown promising nonlinear optical properties in the visible range. To extend their nonlinear optical response to the near infrared (NIR) region, we prepared a new nanohybrid consisting of uniform PbS quantum dots (QDs) attached on the reduced graphene oxide, named rGO-PbS, via a facile, low-cost, and phosphine-free method. The rGO-PbS nanohybrid exhibited superior optical limiting properties to either graphene oxide or PbS QDs upon both 532 nm and 1064 nm excitation in the nanosecond laser pulse regime, which is attributed to the synergetic effects stemming from charge transfer between the two components. Meanwhile, the thin films containing the rGO-PbS nanohybrid dispersed in polymethylmethacrylate (PMMA) also showed excellent optical limiting properties with high transparency, implying the potential applications of this hybrid material in broadband nonlinear optical devices.
ISSN:2040-3364
2040-3372
DOI:10.1039/c5nr01088h