The role of charge recombination to triplet excitons in organic solar cells.
Journal
Nature
ISSN: 1476-4687
Titre abrégé: Nature
Pays: England
ID NLM: 0410462
Informations de publication
Date de publication:
09 2021
09 2021
Historique:
received:
16
06
2020
accepted:
20
07
2021
entrez:
30
9
2021
pubmed:
1
10
2021
medline:
1
10
2021
Statut:
ppublish
Résumé
The use of non-fullerene acceptors (NFAs) in organic solar cells has led to power conversion efficiencies as high as 18%
Identifiants
pubmed: 34588666
doi: 10.1038/s41586-021-03840-5
pii: 10.1038/s41586-021-03840-5
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
666-671Informations de copyright
© 2021. The Author(s), under exclusive licence to Springer Nature Limited.
Références
Liu, Q. et al. 18% efficiency organic solar cells. Sci. Bull. 65, 272–275 (2020).
doi: 10.1016/j.scib.2020.01.001
Green, M. A. et al. Solar cell efficiency tables (version 55). Prog. Photovolt. Res. Appl. 28, 3–15 (2020).
doi: 10.1002/pip.3228
Liu, S. et al. High-efficiency organic solar cells with low non-radiative recombination loss and low energetic disorder. Nat. Photon. 14, 300–305 (2020).
doi: 10.1038/s41566-019-0573-5
Menke, S. M., Ran, N. A., Bazan, G. C. & Friend, R. H. Understanding energy loss in organic solar cells: toward a new efficiency regime. Joule 2, 25–35 (2018).
doi: 10.1016/j.joule.2017.09.020
Yuan, J. et al. Single-junction organic solar cell with over 15% efficiency using fused-ring acceptor with electron-deficient core. Joule 3, 1140–1151 (2019).
doi: 10.1016/j.joule.2019.01.004
Shockley, W. & Queisser, H. J. Detailed balance limit of efficiency of p–n junction solar cells. J. Appl. Phys. 32, 510–519 (1961).
doi: 10.1063/1.1736034
Ross, R. T. Some thermodynamics of photochemical systems. J. Chem. Phys. 46, 4590–4593 (1967).
doi: 10.1063/1.1840606
Rau, U. Reciprocity relation between photovoltaic quantum efficiency and electroluminescent emission of solar cells. Phys. Rev. B 76, 085303 (2007).
doi: 10.1103/PhysRevB.76.085303
Lee, J. et al. Design of nonfullerene acceptors with near-infrared light absorption capabilities. Adv. Energy Mater. 8, 1801209 (2018).
doi: 10.1002/aenm.201801209
Cui, Y. et al. Over 16% efficiency organic photovoltaic cells enabled by a chlorinated acceptor with increased open-circuit voltages. Nat. Commun. 10, 2515 (2019).
pubmed: 31175276
pmcid: 6555805
doi: 10.1038/s41467-019-10351-5
Qian, D. et al. Design rules for minimizing voltage losses in high-efficiency organic solar cells. Nat. Mater. 17, 703–709 (2018).
pubmed: 30013057
doi: 10.1038/s41563-018-0128-z
Zhou, Z. et al. Subtle molecular tailoring induces significant morphology optimization enabling over 16% efficiency organic solar cells with efficient charge generation. Adv. Mater. 32, 1906324 (2020).
doi: 10.1002/adma.201906324
Li, S., Li, C., Shi, M. & Chen, H. New phase for organic solar cell research: emergence of Y-series electron acceptors and their perspectives. ACS Energy Lett. 5, 1554–1567 (2020).
doi: 10.1021/acsenergylett.0c00537
Yuan, J. et al. Reducing voltage losses in the A-DA′D-A acceptor-based organic solar cells. Chem 6, 2147–2161 (2020).
doi: 10.1016/j.chempr.2020.08.003
Vandewal, K., Mertens, S., Benduhn, J. & Liu, Q. The cost of converting excitons into free charge carriers in organic solar cells. J. Phys. Chem. Lett. 11, 129–135 (2020).
pubmed: 31829597
doi: 10.1021/acs.jpclett.9b02719
Geffroy, B., le Roy, P. & Prat, C. Organic light-emitting diode (OLED) technology: materials, devices and display technologies. Polym. Int. 55, 572–582 (2006).
doi: 10.1002/pi.1974
Classen, A. et al. The role of exciton lifetime for charge generation in organic solar cells at negligible energy-level offsets. Nat. Energy 5, 711–719 (2020).
doi: 10.1038/s41560-020-00684-7
Eisner, F. D. et al. Hybridization of local exciton and charge-transfer states reduces nonradiative voltage losses in organic solar cells. J. Am. Chem. Soc. 141, 6362–6374 (2019).
pubmed: 30882218
doi: 10.1021/jacs.9b01465
Chen, X.-K., Coropceanu, V. & Brédas, J.-L. Assessing the nature of the charge-transfer electronic states in organic solar cells. Nat. Commun. 9, 5295 (2018).
pubmed: 30546009
pmcid: 6294259
doi: 10.1038/s41467-018-07707-8
Wang, J., Chepelianskii, A., Gao, F. & Greenham, N. C. Control of exciton spin statistics through spin polarization in organic optoelectronic devices. Nat. Commun. 3, 1191 (2012).
pubmed: 23149736
doi: 10.1038/ncomms2194
Chen, X.-K., Wang, T. & Brédas, J.-L. Suppressing energy loss due to triplet exciton formation in organic solar cells: the role of chemical structures and molecular packing. Adv. Energy Mater. 7, 1602713 (2017).
doi: 10.1002/aenm.201602713
Rao, A. et al. The role of spin in the kinetic control of recombination in organic photovoltaics. Nature 500, 435–439 (2013).
pubmed: 23925118
doi: 10.1038/nature12339
Kraffert, F. et al. Charge separation in PCPDTBT:PCBM blends from an EPR perspective. J. Phys. Chem. C 118, 28482–28493 (2014).
doi: 10.1021/jp509650v
Köhler, A. & Beljonne, D. The singlet–triplet exchange energy in conjugated polymers. Adv. Funct. Mater. 14, 11–18 (2004).
doi: 10.1002/adfm.200305032
Hodgkiss, J. M. et al. Exciton-charge annihilation in organic semiconductor films. Adv. Funct. Mater. 22, 1567–1577 (2012).
doi: 10.1002/adfm.201102433
Benduhn, J. et al. Impact of triplet excited states on the open-circuit voltage of organic solar cells. Adv. Energy Mater. 8, 1800451 (2018).
doi: 10.1002/aenm.201800451
Cohen, A. E. Nanomagnetic control of intersystem crossing. J. Phys. Chem. A 113, 11084–11092 (2009).
pubmed: 19725575
doi: 10.1021/jp907113p
Shoaee, S. et al. Decoding charge recombination through charge generation in organic solar cells. Sol. RRL 3, 1900184 (2019).
doi: 10.1002/solr.201900184
Dimitrov, S. D. et al. Polaron pair mediated triplet generation in polymer/fullerene blends. Nat. Commun. 6, 6501 (2015)
pubmed: 25735188
doi: 10.1038/ncomms7501
Salvadori, E. et al. Ultra-fast spin-mixing in a diketopyrrolopyrrole monomer/fullerene blend charge transfer state. J. Mater. Chem. A 5, 24335–24343 (2017).
doi: 10.1039/C7TA07381J
Menke, S. M. et al. Limits for recombination in a low energy loss organic heterojunction. ACS Nano 10, 10736–10744 (2016).
pubmed: 27809478
doi: 10.1021/acsnano.6b06211
Xue, L. et al. Side chain engineering on medium bandgap copolymers to suppress triplet formation for high-efficiency polymer solar cells. Adv. Mater. 29, 1703344 (2017).
doi: 10.1002/adma.201703344
Chow, P. C. Y., Gélinas, S., Rao, A. & Friend, R. H. Quantitative bimolecular recombination in organic photovoltaics through triplet exciton formation. J. Am. Chem. Soc. 136, 3424–3429 (2014).
pubmed: 24521399
doi: 10.1021/ja410092n
Di Nuzzo, D. et al. Improved film morphology reduces charge carrier recombination into the triplet excited state in a small bandgap polymer-fullerene photovoltaic cell. Adv. Mater. 22, 4321–4324 (2010).
pubmed: 20583036
doi: 10.1002/adma.201001452
Karuthedath, S. et al. Buildup of triplet-state population in operating TQ1:PC
pubmed: 32202789
doi: 10.1021/acs.jpclett.0c00756
Wang, R. et al. Charge separation from an intra-moiety intermediate state in the high-performance PM6:Y6 organic photovoltaic blend. J. Am. Chem. Soc. 142, 12751–12759 (2020).
pubmed: 32602706
doi: 10.1021/jacs.0c04890
Gelinas, S. et al. Ultrafast long-range charge separation in organic semiconductor photovoltaic diodes. Science 343, 512–516 (2014).
pubmed: 24336568
doi: 10.1126/science.1246249
Jakowetz, A. C. et al. Visualizing excitations at buried heterojunctions in organic semiconductor blends. Nat. Mater. 16, 551–557 (2017).
pubmed: 28218921
doi: 10.1038/nmat4865
Menke, S. M. et al. Order enables efficient electron-hole separation at an organic heterojunction with a small energy loss. Nat. Commun. 9, 277 (2018).
pubmed: 29348491
pmcid: 5773693
doi: 10.1038/s41467-017-02457-5
Burke, T. M., Sweetnam, S., Vandewal, K. & McGehee, M. D. Beyond langevin recombination: how equilibrium between free carriers and charge transfer states determines the open-circuit voltage of organic solar cells. Adv. Energy Mater. 5, 1500123 (2015).
doi: 10.1002/aenm.201500123
Hosseini, S. M. et al. Putting order into PM6:Y6 solar cells to reduce the Langevin recombination in 400 nm thick junction. Sol. RRL 4, 2000498 (2020).
doi: 10.1002/solr.202000498
Karki, A. et al. Understanding the high performance of over 15% efficiency in single-junction bulk heterojunction organic solar cells. Adv. Mater. 31, 1903868 (2019).
doi: 10.1002/adma.201903868
Niklas, J. et al. Highly-efficient charge separation and polaron delocalization in polymer-fullerene bulk-heterojunctions: a comparative multi-frequency EPR and DFT study. Phys. Chem. Chem. Phys. 15, 9562–9574 (2013).
pubmed: 23670645
pmcid: 4985177
doi: 10.1039/c3cp51477c
Richert, S., Tait, C. E. & Timmel, C. R. Delocalisation of photoexcited triplet states probed by transient EPR and hyperfine spectroscopy. J. Magn. Reson. 280, 103–116 (2017).
pubmed: 28579096
doi: 10.1016/j.jmr.2017.01.005
Thomson, S. A. J. et al. Charge separation and triplet exciton formation pathways in small molecule solar cells as studied by time-resolved EPR spectroscopy. J. Phys. Chem. C 121, 22707–22719 (2017).
doi: 10.1021/acs.jpcc.7b08217
Hintze, C., Steiner, U. E. & Drescher, M. Photoexcited triplet state kinetics studied by electron paramagnetic resonance spectroscopy. ChemPhysChem 18, 6–16 (2017).
pubmed: 27791329
doi: 10.1002/cphc.201600868
Benduhn, J. et al. Intrinsic non-radiative voltage losses in fullerene-based organic solar cells. Nat. Energy 2, 17053 (2017).
doi: 10.1038/nenergy.2017.53
Kubas, A. et al. Electronic couplings for molecular charge transfer: benchmarking CDFT, FODFT and FODFTB against high-level ab initio calculations. II. Phys. Chem. Chem. Phys. 17, 14342–14354 (2015).
pubmed: 25573447
doi: 10.1039/C4CP04749D
Chang, W. et al. Spin-dependent charge transfer state design rules in organic photovoltaics. Nat. Commun. 6, 6415 (2015).
pubmed: 25762410
doi: 10.1038/ncomms7415
Street, R. A., Song, K. W., Northrup, J. E. & Cowan, S. Photoconductivity measurements of the electronic structure of organic solar cells. Phys. Rev. B 83, 165207 (2011).
doi: 10.1103/PhysRevB.83.165207
Rasaiah, J. C., Hubbard, J. B., Rubin, R. J. & Lee, S. H. Kinetics of bimolecular recombination processes with trapping. J. Phys. Chem. 94, 652–662 (1990).
doi: 10.1021/j100365a028
Lee, J. et al. Bandgap narrowing in non-fullerene acceptors: single atom substitution leads to high optoelectronic response beyond 1000 nm. Adv. Energy Mater. 8, 1801212 (2018).
doi: 10.1002/aenm.201801212
de Mello, J. C., Wittmann, H. F. & Friend, R. H. An improved experimental determination of external photoluminescence quantum efficiency. Adv. Mater. 9, 230–232 (1997).
doi: 10.1002/adma.19970090308
Lee, C.-L., Yang, X. & Greenham, N. C. Determination of the triplet excited-state absorption cross section in a polyfluorene by energy transfer from a phosphorescent metal complex. Phys. Rev. B 76, 245201 (2007).
doi: 10.1103/PhysRevB.76.245201
Biskup, T. Structure-function relationship of organic semiconductors: detailed insights from time-resolved EPR spectroscopy. Front Chem. 7, 10 (2019).
pubmed: 30775359
pmcid: 6367236
doi: 10.3389/fchem.2019.00010
Weber, S. Transient EPR. eMagRes 6, 255–270 (2017).
doi: 10.1002/9780470034590.emrstm1509
Niklas, J. & Poluektov, O. G. Charge transfer processes in OPV materials as revealed by EPR spectroscopy. Adv. Energy Mater. 7, 1602226 (2017).
doi: 10.1002/aenm.201602226
Righetto, M. et al. Engineering interactions in QDs-PCBM blends: a surface chemistry approach. Nanoscale 10, 11913–11922 (2018).
pubmed: 29901055
doi: 10.1039/C8NR03520B
Franco, L. et al. Time-resolved EPR of photoinduced excited states in a semiconducting polymer/PCBM blend. J. Phys. Chem. C 117, 1554–1560 (2013).
doi: 10.1021/jp306278v
Buckley, C. D., Hunter, D. A., Hore, P. J. & McLauchlan, K. A. Electron spin resonance of spin-correlated radical pairs. Chem. Phys. Lett. 135, 307–312 (1987).
doi: 10.1016/0009-2614(87)85162-X
Hore, P. J., Hunter, D. A., McKie, C. D. & Hoff, A. J. Electron paramagnetic resonance of spin-correlated radical pairs in photosynthetic reactions. Chem. Phys. Lett. 137, 495–500 (1987).
doi: 10.1016/0009-2614(87)80617-6
Stoll, S. & Schweiger, A. EasySpin, a comprehensive software package for spectral simulation and analysis in EPR. J. Magn. Reson. 178, 42–55 (2006).
pubmed: 16188474
doi: 10.1016/j.jmr.2005.08.013