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High-Performance Solution-Processed Non-Fullerene Organic Solar Cells based on Selenophene-Containing Perylene Bisimide Acceptor

Title
High-Performance Solution-Processed Non-Fullerene Organic Solar Cells based on Selenophene-Containing Perylene Bisimide Acceptor
Author
최효성
Keywords
ELECTRON-ACCEPTORS; CONJUGATED POLYMERS; CHARGE GENERATION; EFFICIENCY; SEMICONDUCTORS; PHOTOVOLTAICS; AGGREGATION; MORPHOLOGY; SEPARATION; DESIGN
Issue Date
2015-12
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v. 138, NO 1, Page. 375-380
Abstract
Non-fullerene acceptors have recently attracted tremendous interest because of their potential as alternatives to fullerene derivatives in bulk heterojunction organic solar cells. However, the power conversion efficiencies (PCEs) have lagged far behind those of the polymer/fullerene system, mainly because of the low fill factor (FF) and photocurrent. Here we report a novel perylene bisimide (PBI) acceptor, SdiPBI-Se, in which selenium atoms were introduced into the perylene core. With a well-established wide-band-gap polymer (PDBT-T1) as the donor, a high efficiency of 8.4% with an unprecedented high FF of 70.2% is achieved for solution-processed non-fullerene organic solar cells. Efficient photon absorption, high and balanced charge carrier mobility, and ultrafast charge generation processes in PDBT-T1:SdiPBI-Se films account for the high photovoltaic performance. Our results suggest that non-fullerene acceptors have enormous potential to rival or even surpass the performance of their fullerene counterparts.
URI
http://pubs.acs.org/doi/abs/10.1021/jacs.5b11149http://hdl.handle.net/20.500.11754/29589
ISSN
0002-7863
DOI
10.1021/jacs.5b11149
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > CHEMISTRY(화학과) > Articles
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