Yap, B. K., Xia, R., Campoy-Quiles, M., Stavrinou, P. N. & Bradley, D. D. C. Simultaneous optimization of charge-carrier mobility and optical gain in semiconducting polymer films. Nat. Mater. 7, 376–380 (2008).
Baldo, M. A., Holmes, R. J. & Forrest, S. R. Prospects for electrically pumped organic lasers. Phys. Rev. B 66, 035321 (2002).
Yiu, A. T. et al. Side-chain tunability of furan-containing low-band-gap polymers provides control of structural order in efficient solar cells. J. Am. Chem. Soc. 134, 2180–2185 (2012).
Katz, H. E. et al. A soluble and air-stable organic semiconductor with high electron mobility. Nature 404, 478–481 (2000).
Nikolka, M. et al. High operational and environmental stability of high-mobility conjugated polymer field-effect transistors through the use of molecular additives. Nat. Mater. 16, 356–362 (2017).
Zhao, W. et al. Molecular optimization enables over 13 efficiency in organic solar cells. J. Am. Chem. Soc. 139, 7148–7151 (2017).
Muccini, M. A bright future for organic field-effect transistors. Nat. Mater. 5, 605–613 (2006).
Tessler, N. Lasers based on semiconducting organic materials. Adv. Mater. 11, 363–370 (1999).
Noriega, R. et al. A general relationship between disorder, aggregation and charge transport in conjugated polymers. Nat. Mater. 12, 1038–1044 (2013).
Troisi, A. The speed limit for sequential charge hopping in molecular materials. Org. Electron. 12, 1988–1991 (2011).
Mikhnenko, O. V. et al. Trap-limited exciton diffusion in organic semiconductors. Adv. Mater. 26, 1912–1917 (2014).
Pope, M. & Swenberg, C. E. Electronic Processes in Organic Crystals and Polymers (Oxford University Press, Oxford, 1984).
Sheng, C.-X., Tong, M., Singh, S. & Vardeny, Z. V. Experimental determination of the charge/neutral branching ratio in the photoexcitation of π-conjugated polymers by broadband ultrafast spectroscopy. Phys. Rev. B 75, 085206 (2007).
Yan, M., Rothberg, L. J., Kwock, E. W. & Miller, T. M. Interchain excitations in conjugated polymers. Phys. Rev. Lett. 75, 1992–1995 (1995).
Frankevich, E. L. et al. Polaron-pair generation in poly(phenylene vinylenes). Phys. Rev. B 46, 9320–9324 (1992).
Benduhn, J. et al. Intrinsic non-radiative voltage losses in fullerene-based organic solar cells. Nat. Energy 2, 17053 (2017).
Fidder, H., Rini, M. & Nibbering, E. T. J. The role of large conformational changes in efficient ultrafast internal conversion: deviations from the energy gap law. J. Am. Chem. Soc. 126, 3789–3794 (2004).
Horio, T., Fuji, T., Suzuki, Y.-I. & Suzuki, T. Probing ultrafast internal conversion through conical intersection via time-energy map of photoelectron angular anisotropy. J. Am. Chem. Soc. 131, 10392–10393 (2009).
Spano, F. C. & Silva, C. H- and J-aggregate behavior in polymeric semiconductors. Annu. Rev. Phys. Chem. 65, 477–500 (2014).
Englman, R. & Jortner, J. The energy gap law for radiationless transitions in large molecules. Mol. Phys. 18, 145–164 (1970).
Hilborn, R. C. Einstein coefficients, cross sections, f values, dipole moments, and all that. Am. J. Phys. 50, 982–986 (1982).
Hassaan, M. U. et al. Highly efficient energy transfer in light emissive poly(9,9-dioctylfluorene) and poly(p-phenylenevinylene) Blend System. ACS Photonics 5, 607–613 (2018).
Kim, Y. et al. Organic photovoltaic devices based on blends of regioregular poly(3-hexylthiophene) and poly(9,9-dioctylfluorene-co-benzothiadiazole). Chem. Mater. 16, 4812–4818 (2004).
Kang, I., Yun, H.-J., Chung, D. S., Kwon, S.-K. & Kim, Y.-H. Record high hole mobility in polymer semiconductors via side-chain engineering. J. Am. Chem. Soc. 135, 14896–14899 (2013).
Kang, K. et al. 2D coherent charge transport in highly ordered conducting polymers doped by solid state diffusion. Nat. Mater. 15, 896–902 (2016).
Venkateshvaran, D. et al. Approaching disorder-free transport in high-mobility conjugated polymers. Nature 515, 384–388 (2014).
Nicolai, H. T. et al. Unification of trap-limited electron transport in semiconducting polymers. Nat. Mater. 11, 882–887 (2012).
Sirringhaus, H. 25th anniversary article: organic field-effect transistors: the path beyond amorphous silicon. Adv. Mater. 26, 1319–1335 (2014).
Liu, J. et al. High mobility emissive organic semiconductor. Nat. Commun. 6, 10032 (2015).
Zhang, W. et al. A novel alkylated indacenodithieno[3,2-b]thiophene-based polymer for high-performance field-effect transistors. Adv. Mater. 28, 3922–3927 (2016).
Chen, H. et al. Dithiopheneindenofluorene (TIF) semiconducting polymers with very high mobility in field-effect transistors. Adv. Mater. 29, 1702523 (2017).
Wu, C. C. et al. Integration of organic LEDs and amorphous Si TFTs onto flexible and lightweight metal foil substrates. IEEE Electron Device Lett. 18, 609–612 (1997).
Bittle, E. G., Basham, J. I., Jackson, T. N., Jurchescu, O. D. & Gundlach, D. J. Mobility overestimation due to gated contacts in organic field-effect transistors. Nat. Commun. 7, 10908 (2016).
Chen Huajie et al. Highly π-extended copolymers with diketopyrrolopyrrole moieties for high-performance field-effect transistors. Adv. Mater. 24, 4618–4622 (2012).
Nikolka, M. et al. Performance improvements in conjugated polymer devices by removal of water-induced traps. Adv. Mater. 30, 1801874 (2018).
Sadhanala, A. et al. Preparation of single-phase films of CH3NH3Pb(I1 − xBrx)3 with sharp optical band edges. J. Phys. Chem. Lett. 5, 2501–2505 (2014).
Gibson, G. L., McCormick, T. M. & Seferos, D. S. Atomistic band gap engineering in donor –acceptor polymers. J. Am. Chem. Soc. 134, 539–547 (2012).
Li, W. et al. Mobility-controlled performance of thick solar cells based on fluorinated copolymers. J. Am. Chem. Soc. 136, 15566–15576 (2014).
You, J. et al. A polymer tandem solar cell with 10.6% power conversion efficiency. Nat. Commun. 4, 1446 (2013).
Urbach, F. The long-wavelength edge of photographic sensitivity and of the electronic absorption of solids. Phys. Rev. 92, 1324–1324 (1953).
Kronemeijer, A. J. et al. Two-dimensional carrier distribution in top-gate polymer field-effect transistors: correlation between width of density of localized states and urbach energy. Adv. Mater. 26, 728–733 (2014).
Luo, J. et al. Aggregation-induced emission of 1-methyl-1,2,3,4,5-pentaphenylsilole. Chem. Commun. 0, 1740–1741 (2001).
Yan, M., Rothberg, L. J., Papadimitrakopoulos, F., Galvin, M. E. & Miller, T. M. Spatially indirect excitons as primary photoexcitations in conjugated polymers. Phys. Rev. Lett. 72, 1104–1107 (1994).
Dyakonov, V., Rösler, G., Schwoerer, M. & Frankevich, E. L. Evidence for triplet interchain polaron pairs and their transformations in polyphenylenevinylene. Phys. Rev. B 56, 3852–3862 (1997).
Tautz, R. et al. Structural correlations in the generation of polaron pairs in low-bandgap polymers for photovoltaics. Nat. Commun. 3, 970 (2012).
Di Nuzzo, D. et al. Enhanced photogeneration of polaron pairs in neat semicrystalline donor–acceptor copolymer films via direct excitation of interchain aggregates. J. Phys. Chem. Lett. 6, 1196–1203 (2015).
Sariciftci, N. S., Smilowitz, L., Heeger, A. J. & Wudl, F. Photoinduced electron transfer from a conducting polymer to buckminsterfullerene. Science 258, 1474–1476 (1992).
Vacar, D., Maniloff, E. S., McBranch, D. W. & Heeger, A. J. Charge-transfer range for photoexcitations in conjugated polymer/fullerene bilayers and blends. Phys. Rev. B 56, 4573–4577 (1997).
Tvingstedt, K. et al. Electroluminescence from charge transfer states in polymer solar cells. J. Am. Chem. Soc. 131, 11819–11824 (2009).
Gélinas, S. et al. The binding energy of charge-transfer excitons localized at polymeric semiconductor heterojunctions. J. Phys. Chem. C. 115, 7114–7119 (2011).
Banerji, N., Cowan, S., Leclerc, M., Vauthey, E. & Heeger, A. J. Exciton formation, relaxation, and decay in PCDTBT. J. Am. Chem. Soc. 132, 17459–17470 (2010).
Banerji, N. Sub-picosecond delocalization in the excited state of conjugated homopolymers and donor copolymers. J. Mater. Chem. C. 1, 3052–3066 (2013).
Westerling, M. et al. Photoexcitation dynamics in an alternating polyfluorene copolymer. Phys. Rev. B 75, 224306 (2007).
Miranda, P. B., Moses, D. & Heeger, A. J. Ultrafast photogeneration of charged polarons in conjugated polymers. Phys. Rev. B 64, 081201 (2001).
Miranda, P. B., Moses, D. & Heeger, A. J. Ultrafast photogeneration of charged polarons on conjugated polymer chains in dilute solution. Phys. Rev. B 70, 085212 (2004).
Soci, C., Moses, D., Xu, Q.-H. & Heeger, A. J. Charge-carrier relaxation dynamics in highly ordered poly(p-phenylene vinylene): effects of carrier bimolecular recombination and trapping. Phys. Rev. B 72, 245204 (2005).
Xu, Q.-H., Moses, D. & Heeger, A. J. Direct observation of a time-delayed intermediate state generated via exciton-exciton annihilation in polyfluorene. Phys. Rev. B 68, 174303 (2003).
Ridley, J. & Zerner, M. An intermediate neglect of differential overlap technique for spectroscopy: pyrrole and the azines. Theor. Chim. Acta 32, 111–134 (1973).
