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Enhancing the Internal Quantum Efficiency and Stability of Organic Solar Cells via Metallic Nanofunnels
Author(s) -
Baek SeWoong,
Hun Kim Jong,
Kang Juhoon,
Lee Hyunsoo,
Young Park Jeong,
Lee JungYong
Publication year - 2015
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201501393
Subject(s) - materials science , polyethylenimine , organic solar cell , energy conversion efficiency , quantum efficiency , optoelectronics , active layer , charge carrier , hybrid solar cell , cathode , layer (electronics) , nanoparticle , nanotechnology , polymer solar cell , polymer , composite material , chemistry , transfection , biochemistry , thin film transistor , gene
Metal nanoparticles are demonstrated to boost the internal quantum efficiency (IQE) of organic solar cells (OSCs), even without a notable plasmonic optical gain. A hybrid layer platform in combination with silver nanoparticles (AgNPs) and a polyethylenimine‐ethoxylated (PEIE) layer maximize the IQE of the OSCs to nearly 100%, yielding a power conversion efficiency (PCE) of 10.1% in the OSCs. 2D surface characterization confirmed that the AgNPs provide a short path and funneled charge carriers to the cathode, thus effectively increasing the carrier mobility. Moreover, the hybrid layer doubles the device's half‐efficiency lifetime due to the longer retention of the improved mobility.