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Conductive Conjugated Polyelectrolyte as Hole‐Transporting Layer for Organic Bulk Heterojunction Solar Cells
Author(s) -
Zhou Huiqiong,
Zhang Yuan,
Mai ChengKang,
Collins Samuel D.,
Nguyen ThucQuyen,
Bazan Guillermo C.,
Heeger Alan J.
Publication year - 2014
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201302845
Subject(s) - pedot:pss , materials science , organic solar cell , polymer solar cell , electrical conductor , heterojunction , polyelectrolyte , layer (electronics) , optoelectronics , active layer , hybrid solar cell , conductive polymer , chemical engineering , solar cell , nanotechnology , composite material , polymer , thin film transistor , engineering
Poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) has been extensively used as the hole‐transporting layer (HTL) in bulk heterojunction (BHJ) solar cells, however, its anisotropic electrical conduction and intrinsic acidic nature generally limit the device performance. Here we demonstrate the application of a water/alcohol soluble CPE (CPE‐K) as HTLs in BHJ solar cells, achieving a PCE up to 8.2%. The more superior and uniform vertical electrical conductivity found in CPE‐K reduces the series resistance and provides efficient hole extraction.