Efficient Double- and Triple-Junction Nonfullerene Organic Photovoltaics and Design Guidelines for Optimal Cell Performance
Ho, Carr Hoi Yi
Le Corre, Vincent M.
Nugraha, Mohamad Insan
Anthopoulos, Thomas D.
KAUST DepartmentKAUST Solar Center (KSC)
Material Science and Engineering
Material Science and Engineering Program
Physical Science and Engineering (PSE) Division
KAUST Grant NumberOSR2018-CARF/CCF-3079
Embargo End Date2021-11-12
Permanent link to this recordhttp://hdl.handle.net/10754/665974
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AbstractThe performance of multijunction devices lags behind single-junction organic photovoltaics (OPVs) mainly because of the lack of suitable subcells. Here, we attempt to address this bottleneck and demonstrate efficient nonfullerene-based multijunction OPVs while at the same time highlighting the remaining challenges. We first demonstrate double-junction OPVs with power conversion efficiency (PCE) of 16.5%. Going a step further, we developed triple-junction OPVs with a PCE of 14.9%, the highest value reported to date for this triple-junction cells. Device simulations suggest that improving the front-cell’s carrier mobility to >5 × 10–4 cm2 V–1 s–1 is needed to boost the efficiency of double- and triple-junction OPVs. Analysis of the efficiency limit of triple-junction devices predicts that PCE values of close to 26% are possible. To achieve this, however, the optical absorption and charge transport within the subcells would need to be optimized. The work is an important step toward next-generation multijunction OPVs.
CitationFirdaus, Y., Ho, C. H. Y., Lin, Y., Yengel, E., Le Corre, V. M., Nugraha, M. I., … Anthopoulos, T. D. (2020). Efficient Double- and Triple-Junction Nonfullerene Organic Photovoltaics and Design Guidelines for Optimal Cell Performance. ACS Energy Letters, 3692–3701. doi:10.1021/acsenergylett.0c02077
SponsorsThis publication is based upon work supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No: OSR2018-CARF/CCF-3079; Office of Naval Research Grant N00014-17-1-2242; National Science Foundation Award CBET-1639429; and NextGen Nano Limited.
PublisherAmerican Chemical Society (ACS)
JournalACS Energy Letters