{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,7]],"date-time":"2026-08-07T17:22:56Z","timestamp":1786123376555,"version":"build-2736575974"},"reference-count":106,"publisher":"Wiley","issue":"44","license":[{"start":{"date-parts":[[2026,6,12]],"date-time":"2026-06-12T00:00:00Z","timestamp":1781222400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,6,12]],"date-time":"2026-06-12T00:00:00Z","timestamp":1781222400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Small"],"published-print":{"date-parts":[[2026,8]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Mo\n                    <jats:sub>x<\/jats:sub>\n                    W\n                    <jats:sub>1\u2212x<\/jats:sub>\n                    Se\n                    <jats:sub>2<\/jats:sub>\n                    alloys exhibit composition\u2010tunable properties critical for optoelectronics. This study investigates their composition\u2010dependent excitonic behavior using photoluminescence (PL) spectroscopy at 300 and 25\u00a0K and their phonon properties across stoichiometries and layer numbers from 1 to 10 using Raman spectroscopy. PL spectroscopy reveals nonlinear bowing of 0.106 and 0.149\u00a0eV for A and B excitons at 300\u00a0K, and of 0.097 and 0.100\u00a0eV for neutral excitons X\n                    <jats:sup>0<\/jats:sup>\n                    and trions T\n                    <jats:sup>s<\/jats:sup>\n                    at 25\u00a0K, with the T\n                    <jats:sup>s<\/jats:sup>\n                    binding energy not depending on the composition. At\n                    <jats:italic>x<\/jats:italic>\n                    \u00a0=\u00a00.25, anomalous X\n                    <jats:sup>0<\/jats:sup>\n                    and T\n                    <jats:sup>s<\/jats:sup>\n                    blueshift and complex PL structure containing narrow peaks (down to 2.3\u00a0meV) are detected, indicating emergence of 0D confinement. 26 MoSe\n                    <jats:sub>2<\/jats:sub>\n                    \u2010like and 25 WSe\n                    <jats:sub>2<\/jats:sub>\n                    \u2010like identified Raman modes show composition\u2010 and layer\u2010dependent frequency shifts. A modified random element isodisplacement model is used to quantify force constant variations for 1\u20137 layers, highlighting roles of Mo\u2010W mass disparity and interlayer interactions. A critical transition from 2D to 3D behavior occurs at 4\u20135 layers, marked by nonlinear force constant variations, B\n                    <jats:sup>1<\/jats:sup>\n                    <jats:sub>2g<\/jats:sub>\n                    mode inflections, and saturation of phonon frequencies for\n                    <jats:italic>N<\/jats:italic>\n                    \u00a0&gt;\u00a05. These findings provide fundamental insights for designing TMD\u2010based devices with tailored optoelectronic and thermal properties.\n                  <\/jats:p>","DOI":"10.1002\/smll.202512331","type":"journal-article","created":{"date-parts":[[2026,6,12]],"date-time":"2026-06-12T13:55:26Z","timestamp":1781272526000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Composition\u2010 and Thickness\u2010Dependent Electronic and Phonon Properties of Monolayer to Few\u2010Layer Mo\n                    <sub>x<\/sub>\n                    W\n                    <sub>1\u2212x<\/sub>\n                    Se\n                    <sub>2<\/sub>\n                    Alloys"],"prefix":"10.1002","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8917-8937","authenticated-orcid":false,"given":"E. 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