材料科学
等离子体子
光电子学
有机发光二极管
纳米颗粒
表面等离子体子
电致发光
电极
表面等离子体激元
能量转换效率
纳米技术
图层(电子)
化学
物理化学
作者
Taehyo Kim,Saewon Kang,Jungwoo Heo,Seungse Cho,Jae Won Kim,Ayoung Choe,Bright Walker,Ravi Shanker,Hyunhyub Ko,Jin Young Kim
标识
DOI:10.1002/adma.201800659
摘要
Abstract Improved performance in plasmonic organic solar cells (OSCs) and organic light‐emitting diodes (OLEDs) via strong plasmon‐coupling effects generated by aligned silver nanowire (AgNW) transparent electrodes decorated with core–shell silver–silica nanoparticles (Ag@SiO 2 NPs) is demonstrated. NP‐enhanced plasmonic AgNW (Ag@SiO 2 NP–AgNW) electrodes enable substantially enhanced radiative emission and light absorption efficiency due to strong hybridized plasmon coupling between localized surface plasmons (LSPs) and propagating surface plasmon polaritons (SPPs) modes, which leads to improved device performance in organic optoelectronic devices (OODs). The discrete dipole approximation (DDA) calculation of the electric field verifies a strongly enhanced plasmon‐coupling effect caused by decorating core–shell Ag@SiO 2 NPs onto the AgNWs. Notably, an electroluminescence efficiency of 25.33 cd A −1 (at 3.2 V) and a power efficiency of 25.14 lm W −1 (3.0 V) in OLEDs, as well as a power conversion efficiency (PCE) value of 9.19% in OSCs are achieved using hybrid Ag@SiO 2 NP–AgNW films. These are the highest values reported to date for optoelectronic devices based on AgNW electrodes. This work provides a new design platform to fabricate high‐performance OODs, which can be further explored in various plasmonic and optoelectronic devices.
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