title: Plasmon enhanced organic devices utilizing highly ordered nanoimprinted gold nanodisks and nitrogen doped graphene.
abstract: High performance organic devices including polymer solar cells (PSCs) and light emitting diodes (PLEDs) were successfully demonstrated with the presence of highly ordered nanoimprinted Au nanodisks (Au NDs) in their solution-processed active/emissive layers, respectively. PSCs and PLEDs were fabricated using a low bandgap polymer and acceptor, nitrogen doped multiwalled carbon nanotubes poly[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b']dithiophene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl)carbonyl] thieno[3,4-b]-thiophenediyl] (n-MWCNTs:PTB7), and [6,6]-phenyl C71 butyric acid methyl ester (PC71BM) and (4,4-N,N-dicarbazole) biphenyl (CBP) doped with tris(2-phenylpyridine) iridium(iii) (Ir(ppy)3) as active/emissive layers, respectively. We synthesized nitrogen doped graphene and used it as anodic buffer layer in both devices. The localized surface plasmon resonance (LSPR) effect from Au NDs clearly contributed to the increase in light absorption/emission in the active layers from electromagnetic field enhancement, which originated from the excited LSPR in PSCs and PLEDs. In addition to the high density of LSPR and strong exciton-SP coupling, the electroluminescent (EL) enhancement is ascribed to enhanced spontaneous emission rates. This is due to the plasmonic near-field effect induced by Au NDs. The PSCs and PLEDs exhibited 14.98% (8.08% to 9.29%) under one sun of simulated air mass 1.5 global (AM1.5G) illumination (100 mW cm(-2)) and 19.18% (8.24 to 9.82 lm W(-1)) enhancement in the power conversion efficiencies (PCEs) compared to the control devices without Au NDs.
authors: Solar Energy Research Institute, National University of Malaysia, 43600 Bangi, Selangor, Malaysia. asri@ukm.edu.my.
authors: Mohd Asri Mat
authors: MA
authors: Teridi
authors: Mehran
authors: M
authors: Sookhakian
authors: Wan Jefrey
authors: WJ
authors: Basirun
authors: R
authors: R
authors: Zakaria
authors: Fabio Kurt
authors: FK
authors: Schneider
authors: Wilson Jose
authors: WJ
authors: da Silva
authors: Jaeyeon
authors: J
authors: Kim
authors: Seung Joo
authors: SJ
authors: Lee
authors: Hyeong Pil
authors: HP
authors: Kim
authors: Abd Rashid bin Mohd
authors: AR
authors: Yusoff
authors: Jin
authors: J
authors: Jang