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나노물질 및 화학반응 연구단
나노물질 및 화학반응 연구단
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Au@Ag core-shell nanocubes for efficient plasmonic light scattering effect in low bandgap organic solar cells Highly Cited Paper

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Title
Au@Ag core-shell nanocubes for efficient plasmonic light scattering effect in low bandgap organic solar cells
Author(s)
Baek, S.W.; Garam Park; Noh, J.; Cho, C.; Lee, C.H.; Seo, M.K.; Hyunjoon Song; Jung-Yong Lee
Publication Date
2014-04
Journal
ACS NANO, v.8, no.4, pp.3302 - 3312
Publisher
AMER CHEMICAL SOC
Abstract
In this report, we propose a metalmetal coreshell nanocube (NC) as an advanced plasmonic material for highly efficient organic solar cells (OSCs). We covered an Au core with a thin Ag shell as a scattering enhancer to build Au@Ag NCs, which showed stronger scattering efficiency than Au nanoparticles (AuNPs) throughout the visible range. Highly efficient plasmonic organic solar cells were fabricated by embedding Au@Ag NCs into an anodic buffer layer, poly(3,4- ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), and the power conversion efficiency was enhanced to 6.3% from 5.3% in poly[N-9-hepta-decanyl-2,7-carbazolealt- 5,5-(4,7-di-2-thienyl-2,1,3-benzothiadiazole)] (PCDTBT):[6,6]-phenyl C71-butyric acid methyl ester (PC70BM) based OSCs and 9.2% from 7.9% in polythieno[3,4-b]thiophene/benzodithiophene (PTB7):PC70BM based OSCs. The Au@Ag NC plasmonic PCDTBT:PC70BM-based organic solar cells showed 2.2-fold higher external quantum efficiency enhancement compared to AuNPs devices at a wavelength of 450700 nm due to the amplified plasmonic scattering effect. Finally, we proved the strongly enhanced plasmonic scattering efficiency of Au@Ag NCs embedded in organic solar cells via theoretical calculations and detailed optical measurements.
URI
https://pr.ibs.re.kr/handle/8788114/1066
ISSN
1936-0851
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > Journal Papers (저널논문)
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