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Title: Ternary blend polymer solar cells with enhanced power conversion efficiency

Authors:
; ; ; ;
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC); Argonne-Northwestern Solar Energy Research Center (ANSER)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1210321
DOE Contract Number:
SC0001059
Resource Type:
Journal Article
Resource Relation:
Journal Name: Nat Photon; Journal Volume: 8; Related Information: ANSER partners with Northwestern University (lead); Argonne National Laboratory; University of Chicago; University of Illinois, Urbana-Champaign; Yale University
Country of Publication:
United States
Language:
English
Subject:
catalysis (homogeneous), catalysis (heterogeneous), solar (photovoltaic), solar (fuels), photosynthesis (natural and artificial), bio-inspired, hydrogen and fuel cells, electrodes - solar, defects, charge transport, spin dynamics, membrane, materials and chemistry by design, optics, synthesis (novel materials), synthesis (self-assembly)

Citation Formats

Lu, Luyao, Xu, Tao, Chen, Wei, Landry, Erik S., and Yu, Luping P.. Ternary blend polymer solar cells with enhanced power conversion efficiency. United States: N. p., 2014. Web. doi:10.1038/nphoton.2014.172.
Lu, Luyao, Xu, Tao, Chen, Wei, Landry, Erik S., & Yu, Luping P.. Ternary blend polymer solar cells with enhanced power conversion efficiency. United States. doi:10.1038/nphoton.2014.172.
Lu, Luyao, Xu, Tao, Chen, Wei, Landry, Erik S., and Yu, Luping P.. Sun . "Ternary blend polymer solar cells with enhanced power conversion efficiency". United States. doi:10.1038/nphoton.2014.172.
@article{osti_1210321,
title = {Ternary blend polymer solar cells with enhanced power conversion efficiency},
author = {Lu, Luyao and Xu, Tao and Chen, Wei and Landry, Erik S. and Yu, Luping P.},
abstractNote = {},
doi = {10.1038/nphoton.2014.172},
journal = {Nat Photon},
number = ,
volume = 8,
place = {United States},
year = {Sun Aug 17 00:00:00 EDT 2014},
month = {Sun Aug 17 00:00:00 EDT 2014}
}
  • High-performance ternary all-polymer solar cells with outstanding efficiency of 9.0% are realized by incorporating two donor and one acceptor polymers with complementary absorption and proper energy level alignment.
    Cited by 12
  • We demonstrate the construction of an efficient bilayer polymer solar cell comprising of Poly(3-hexylthiophene)(P3HT) as a p-type semiconductor and asymmetric fullerene (C{sub 70}) as n-type counterparts. The bilayer configuration was very efficient compared to the individual layer performance and it behaved like a regular p-n junction device. The photovoltaic characteristic of the bilayers were studied under AM 1.5 solar radiation and the optimized device parameters are the following: Voc = 0.5V, Jsc = 10.1 mA/cm{sup 2}, FF = 0.60 and power conversion efficiency of 3.6 %. A high fill factor of {approx}0.6 was achieved, which is only slightly reduced atmore » very intense illumination. Balanced mobility between p-and n-layers is achieved which is essential for achieving high device performance. Correlation between the crystallinity, morphology and the transport properties of the active layers is established. The External quantum efficiency (EQE) spectral distribution of the bilayer devices with different processing solvents correlates well with the trends of short circuit current densities (J{sub sc}) measured under illumination. Efficiency of the bilayer devices with rough P3HT layer was found to be about 3 times higher than those with a planar P3HT surface. Hence it is desirable to have a larger grains with a rough surface of P3HT layer for providing larger interfacial area for the exciton dissociation.« less
  • The integration of multiple materials with complementary absorptions into a singlejunction device is regarded as an efficient way to enhance the power conversion efficiency (PCE) of organic solar cells (OSCs). However, due to increased complexity with one more component, only limited high performance ternary systems have been demonstrated previously. Here, we report an efficient ternary blend OSC with a PCE of 9.2%. We show for the first time that the third component can reduce surface trap densities in the ternary blend. Detailed studies unravel that the improved performance results from synergistic effects of enlarged open circuit voltage, suppressed trap assistedmore » recombination, enhanced light absorption, increased hole extraction, efficient energy transfer, and better morphology. The novel working mechanism and high device performance demonstrate new insights and design guidelines for high performance ternary blend solar cells and suggest that ternary structure is a promising platform to boost the efficiency of OSCs.« less