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Highly Efficient Solar‐Driven Photothermal Performance in Au‐Carbon Core‐Shell Nanospheres
Author(s) -
Gan Zhixing,
Chen Zhihui,
Liu Lizhe,
Zhang Lifa,
Tu Wenguang,
Liu Yushen
Publication year - 2017
Publication title -
solar rrl
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.544
H-Index - 37
ISSN - 2367-198X
DOI - 10.1002/solr.201600032
Subject(s) - photothermal therapy , materials science , carbon fibers , plasmon , nanoparticle , energy conversion efficiency , absorption (acoustics) , optoelectronics , nanotechnology , shell (structure) , thermal , photothermal effect , composite material , composite number , physics , meteorology
Optical absorptions, electron–phonon interactions, and thermal conductances at the interface are the key factors for excellent photothermal (PT) agents. To simultaneously enhance them, Au‐cored carbon nanospheres show high photothermal energy conversion efficiency. A broadband enhancement in optical absorption is acquired by broadening the size distribution of the Au cores, and hot electron–phonon interactions are reinforced through plasmon–phonon couplings. The conversion efficiency of the composites is found to be as high as 33.84%, which is improved by 73.8 and 405% compared to the pure carbon spheres and Au nanoparticles (NP), respectively. The Au‐carbon core‐shell nanospheres, acting as a general design of solar‐driven photothermal agent, have a unique property of effectively heating of bulk surroundings, and they can be extensively applied to solar‐driven energy and sustainable development in the future.