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Investigation of a Conjugated Polyelectrolyte Interlayer for Inverted Polymer:Fullerene Solar Cells
Author(s) -
Xia Ruidong,
Leem DongSeok,
Kirchartz Thomas,
Spencer Steve,
Murphy Craig,
He Zhicai,
Wu Hongbin,
Su Shijian,
Cao Yong,
Kim Ji Seon,
deMello John C.,
Bradley Donal D.C.,
Nelson Jenny
Publication year - 2013
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.201200967
Subject(s) - materials science , cathode , fullerene , polymer solar cell , organic solar cell , conjugated system , work function , polymer , photovoltaic system , optoelectronics , polyelectrolyte , transmittance , chemical engineering , x ray photoelectron spectroscopy , heterojunction , nanotechnology , solar cell , composite material , chemistry , organic chemistry , ecology , layer (electronics) , engineering , biology
Inverted bulk heterojunction solar cells are fabricated using a conjugated polyelectrolyte (PFN) as a cathode interlayer. Enhanced photovoltaic performance is achieved by adjusting the PFN thickness. Measurements of the optical transmittance, cathode work function (via UPS) and surface atomic composition (via XPS) provide insights into this optimization. Drift‐diffusion simulations point to a reduction in recombination of holes at the cathode as the main cause for improving V oc .