Title |
Localized Surface Plasmon-Enhanced Electroluminescence in OLEDs by Self-Assembly Ag Nanoparticle Film
|
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Published in |
Discover Nano, December 2015
|
DOI | 10.1186/s11671-015-1176-9 |
Pubmed ID | |
Authors |
Xiaoxiao He, Wenjun Wang, Shuhong Li, Qingru Wang, Wanquan Zheng, Qiang Shi, Yunlong Liu |
Abstract |
We fabricated Ag nanoparticle (NP) film in organic light emission diodes (OLEDs), and a 23 times increase in electroluminescence (EL) at 518 nm was probed by time-resolved EL measurement. The luminance and relative external quantum efficiency (REQE) were increased by 5.4 and 3.7 times, respectively. There comes a new energy transport way that localized surface plasmons (LSPs) would absorb energy that corresponds to the electron-hole pair before recombination, promoting the formation of electron-hole pair and exciting local surface plasmon resonance (LSPR). The extended lifetime of Alq3 indicates the existence of strong interaction between LSPR and exciton, which decreases the nonradiative decay rate of OLEDs. |
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Demographic breakdown
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Other | 0 | 0% |
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