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Here we show that the order\u2010parameter phonons of improper ferroelectricity provide an excited\u2010state pathway to overcome this limitation. In the\n                    <jats:italic>n<\/jats:italic>\n                    = 1 improper\u2010ferroelectric perovskite (Mpda)PbBr\n                    <jats:sub>4<\/jats:sub>\n                    , time\u2010 and spin\u2010resolved optical spectroscopy, coherent phonon analysis and first\u2010principles calculations reveal that the initially generated strongly bound intralayer exciton couples to two low\u2010frequency order\u2010parameter phonons associated with the ferroelectric lattice distortion. This coupling drives relaxation along the structural coordinates that generate improper ferroelectricity, transforming the strongly bound exciton into a charge\u2010transfer\u2010like ferroelectric exciton polaron beyond conventional Fr\u00f6hlich coupling to polar longitudinal optical phonons. The resulting extended polarization response and layer\u2010asymmetric lattice relaxation dynamically screen the electron\u2010hole Coulomb interaction, reducing the effective binding energy from \u223c540 to \u223c16.5 meV. The weakly bound exciton polaron is then separated by the out\u2010of\u2010plane ferroelectric polarization field into long\u2010lived carriers, yielding a zero\u2010bias photocurrent \u223c56 times larger than that of a nonferroelectric analogue. These findings identify improper\u2010ferroelectric order\u2010parameter phonons as active excited\u2010state structural coordinates for controlling exciton binding and charge separation in low\u2010dimensional semiconductors.\n                  <\/jats:p>","DOI":"10.1002\/anie.4560874","type":"journal-article","created":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T04:09:40Z","timestamp":1788926980000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Ferroelectric Phonon\u2010Dressed Exciton Polarons Enable Internal Charge Separation in Strongly Confined 2D Perovskites"],"prefix":"10.1002","volume":"65","author":[{"ORCID":"https:\/\/orcid.org\/0009-0004-6654-7276","authenticated-orcid":false,"given":"Guohua","family":"He","sequence":"first","affiliation":[{"name":"Zhejiang Key Laboratory of Excited\u2010State Energy Conversion and Energy Storage Department of Chemistry Institute of Fundamental and 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