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Processing bulk ductile semiconductors into flexible ribbons relies heavily on plastic deformation; however, such deformation inevitably induces defects that cause detrimental carrier scattering. Furthermore, processing low\u2010plasticity semiconductors via plastic deformation is particularly challenging, as their inherent brittleness predisposes them to fracture under stress. Herein, we develop a melt spinning strategy that avoids plastic deformation and directly enables the efficient and scalable fabrication of freestanding p\u2010type CuAg(Te,Se,S) and n\u2010type Ag\n                    <jats:sub>2<\/jats:sub>\n                    (Se,S) flexible ribbons even some of the chalcogenides possess low plasticity. Facilitated by the synergy of thin thickness, tuned compositions and refined microstructures, the ribbons with optimized compositions exhibit excellent flexibility. Moreover, modulating the chalcogen compositions endows the flexible ribbons with superior near\u2010room\u2010temperature power factors, peaking at 1618 and 879 \u00b5W m\n                    <jats:sup>\u22121<\/jats:sup>\n                    K\n                    <jats:sup>\u22122<\/jats:sup>\n                    for n\u2010type Ag\n                    <jats:sub>2<\/jats:sub>\n                    Se\n                    <jats:sub>0.8<\/jats:sub>\n                    S\n                    <jats:sub>0.2<\/jats:sub>\n                    and p\u2010type CuAgTe\n                    <jats:sub>0.9<\/jats:sub>\n                    Se\n                    <jats:sub>0.04<\/jats:sub>\n                    S\n                    <jats:sub>0.06<\/jats:sub>\n                    , respectively. Notably, the in\u2010plane f\u2010TEGs assembled from highly flexible CuAg(Te,Se,S) and Ag\n                    <jats:sub>2<\/jats:sub>\n                    (Se,S) ribbons possess impressive normalized power densities that compare favorably to those of f\u2010TEGs constructed from organic thermoelectrics or inorganic\u2013organic composites. This work provides a useful plastic\u2010deformation\u2010free paradigm for fabricating freestanding metal chalcogenide ribbons with high flexibility and thermoelectric properties toward the applications in wearable electronics.\n                  <\/jats:p>","DOI":"10.1002\/adma.202519681","type":"journal-article","created":{"date-parts":[[2026,5,20]],"date-time":"2026-05-20T07:24:03Z","timestamp":1779261843000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Plastic\u2010Deformation\u2010Free Fabrication of Freestanding Metal Chalcogenide Ribbons for High\u2010Performance Flexible Thermoelectric Generators"],"prefix":"10.1002","volume":"38","author":[{"given":"Yao","family":"Chen","sequence":"first","affiliation":[{"name":"College of Materials Science and Engineering and National Engineering Research Center for Magnesium Alloys Chongqing University  Chongqing 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