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(N‐doped) Carbon Nanotube Nanostructuring of the Hole Transport Electrode for Reduced Space‐Charge Accumulation in Polymer‐Fullerene Solar Cells
Author(s) -
Bepete George,
Khan Laila,
Chiguvare Zivayi,
Coville Neil J.
Publication year - 2017
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201700137
Subject(s) - materials science , anode , polymer solar cell , carbon nanotube , electrode , polymer , optoelectronics , space charge , fullerene , solar cell , doping , current density , hybrid solar cell , nanotechnology , carbon fibers , composite material , chemistry , physics , electron , organic chemistry , quantum mechanics , composite number
Here, it is shown that by placing a thin film of N‐CNTs on top of the transparent ITO hole collecting electrode of a polymer solar cell, the short circuit current density and efficiency are enhanced by 25 and 50%, respectively, and the usual efficiency losses in polymer solar cells as a function of incident light illumination intensity are significantly reduced. Nanostructuring the anode improves the mobility and collection of holes toward the anode, and as a result reduces space‐charge accumulation in the polymer solar cell.