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Here, we investigate the excited state de-excitation dynamics and exciton diffusion in TPA-T-DCV-Ph-F small molecule, having simple chemical structure with asymmetrical architecture and end-capped with electron-withdrawing\n                    <jats:italic>p<\/jats:italic>\n                    -fluorodicyanovinyl group. The excited state lifetime in diluted solutions (0.04\u00a0ns in toluene and 0.4\u00a0ns in chloroform) are found to be surprisingly shorter compared to the solid state (3\u00a0ns in PMMA matrix). Time-dependent density functional theory indicates that this behavior originates from non-radiative relaxation of the excited state through a conical intersection between the ground and singlet excited state potential energy surfaces. Exciton diffusion length of\u2009~\u200916\u00a0nm in solution processed films was retrieved by employing time-resolved photoluminescence volume quenching measurements with Monte Carlo simulations. As means of investigating the device performance of TPA-T-DCV-Ph-F, we manufactured solution and vacuum processed bulk heterojunction solar cells that yielded efficiencies of\u2009~\u20091.5% and\u2009~\u20093.7%, respectively. Our findings demonstrate that the short lifetime in solutions does not hinder per se long exciton diffusion length in films thereby granting applications of TPA-T-DCV-Ph-F and similar push\u2013pull molecules in vacuum and solution processable devices.\n                  <\/jats:p>","DOI":"10.1038\/s41598-020-78197-2","type":"journal-article","created":{"date-parts":[[2020,12,3]],"date-time":"2020-12-03T06:02:35Z","timestamp":1606975355000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Excited state dynamics and exciton diffusion in triphenylamine\/dicyanovinyl push\u2013pull small molecule for organic optoelectronics"],"prefix":"10.1038","volume":"10","author":[{"given":"Benedito A. 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