http://dx.doi.org/10.1063/1.4919106">
 

Document Type

Journal Article

Authors

Ting Ji, Key Laboratory of Advanced Transducers and Intelligent Control System (Ministry of Education), College of Physics and Optoelectronics, Taiyuan University of Technology
Lining Peng, Key Laboratory of Advanced Transducers and Intelligent Control System (Ministry of Education), College of Physics and Optoelectronics, Taiyuan University of Technology
Yuntao Zhu, SCNU-ZJU Joint Research Center of Photonics, South China Academy of Advanced Optoelectronics, South China Normal University
Fan Yang, Key Laboratory of Advanced Transducers and Intelligent Control System (Ministry of Education), College of Physics and Optoelectronics, Taiyuan University of Technology
Yanxia Cui, Key Laboratory of Advanced Transducers and Intelligent Control System (Ministry of Education), College of Physics and Optoelectronics, Taiyuan University of TechnologyFollow
Xueyan Wu, Key Laboratory of Advanced Transducers and Intelligent Control System (Ministry of Education), College of Physics and Optoelectronics, Taiyuan University of Technology
Liu Liu, SCNU-ZJU Joint Research Center of Photonics, South China Academy of Advanced Optoelectronics, South China Normal University
Sailing He, SCNU-ZJU Joint Research Center of Photonics, South China Academy of Advanced Optoelectronics, South China Normal University
Furong Zhu, Key Laboratory of Advanced Transducers and Intelligent Control System (Ministry of Education), College of Physics and Optoelectronics, Taiyuan University of TechnologyFollow
Yuying Hao, Key Laboratory of Advanced Transducers and Intelligent Control System (Ministry of Education), College of Physics and Optoelectronics, Taiyuan University of Technology

Department/Unit

Department of Physics

Title

Plasmonic broadband absorber by stacking multiple metallic nanoparticle layers

Language

English

Abstract

© 2015 AIP Publishing LLC. High efficiency, broadband plasmonic absorbers are constructed based on a stack of alternating metallic nanoparticle layers (MNLs) and SiO2 slabs on top of a reflective Ag substrate. Experimental results show that the stacks with thick MNLs absorb light better than those with thin MNLs when the number of MNL/SiO2 cells (N) is small (e.g., 1 or 2), but the situation gets reversed when N is greater than 3. When the nominal thickness of MNL is as thin as 5 nm, the acquired Ag nanoparticles are so small that light penetration through all of the stacked MNLs in the proposed design is possible. Thus, an increase in N leads to a growing number of light trapping elements. Our simulation reveals that the Ag nanoparticles at different layers are hybridized to excite rich localized plasmonic resonances, resulting in multiple absorption peaks at optical frequencies and thus a broader absorption band. The broadband absorbers with an integrated absorption efficiency of 96% over the 300-1100 nm wavelength range were achieved by stacking 18 MNL/SiO2 cells. The proposed absorbers can be used for applications in solar energy harvesting and thermal emission tailoring, due to their easy fabrication procedure and excellent optical properties.

Publication Date

2015

Source Publication Title

Applied Physics Letters

Volume

106

Issue

16

Start Page

161107-1

End Page

161107-5

Publisher

American Institute of Physics

ISSN (print)

00036951

ISSN (electronic)

10773118

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