Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 20, Issue 27, Pages 18837-18843Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8cp02734j
Keywords
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Funding
- National Natural Science Foundation of China [61377065, 61574064]
- Science and Technology Planning Project of Guangdong Province [2014B090915004, 2015B010132009]
- Science and Technology Project of Guangzhou City [2014J4100056, 201607010250]
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In this work, segmented silver nanowires (AgNWs) with an average diameter of 60 nm have been successfully synthesized by a typical polyol method without any templates and seeds. The synthesized segmented AgNWs were strongly dependent on the reaction temperature and time. It was found from high-resolution transmission electron microscopy and selected area electron diffraction measurements that the connection node of segmented AgNWs was in the form of a twinned crystal. We speculated that these segmented AgNWs were possibly derived from end-to-end self-connection and selfconcrescence of two neighbouring Ag nanorods or nanowires at a suitable reaction temperature and time, which is further confirmed by the secondary growth of AgNWs. In addition, segmented AgNWs were blended into hole transporting layers to enhance the performance of polymer solar cells (PSCs) by utilizing their localized surface plasmon resonance and optical scattering effects. As a result, the power conversion efficiency (PCE) and short-circuit current density (Jsc) of PSCs with segmented AgNWs increased from 2.81% and 8.99 mA cm(-2) to 3.30% and 9.95 mA cm(-2), respectively.
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