{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,27]],"date-time":"2026-02-27T18:26:19Z","timestamp":1772216779441,"version":"3.50.1"},"reference-count":35,"publisher":"MDPI AG","issue":"20","license":[{"start":{"date-parts":[[2021,10,13]],"date-time":"2021-10-13T00:00:00Z","timestamp":1634083200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100015641","name":"Tateisi Science and Technology Foundation","doi-asserted-by":"publisher","award":["2191902"],"award-info":[{"award-number":["2191902"]}],"id":[{"id":"10.13039\/100015641","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>PEDOT:Tos, a PSS-free PEDOT-based material, is a promising possible organic thermoelectric material for a practical conversion module because the material reportedly has a large power factor. However, since PEDOT:Tos is mainly reported to be a p-type thermoelectric material, the development of PSS-free PEDOT with n-type thermoelectric properties is desirable. Thus, in order to search for PSS-free PEDOT with n-type thermoelectric properties, we investigated the doping concentration of PTSA dependence of the thermoelectric property using the first-principle calculation. The band structure and the density of state indicated that the n-type thermal electromotive force was attributed to the electrons\u2019 large effective mass. Such electrons were produced thanks to the binding of the dopant PTSA to the benzene ring. The contribution of the electron to the Seebeck coefficient increased with increasing PTSA doping concentrations.<\/jats:p>","DOI":"10.3390\/polym13203518","type":"journal-article","created":{"date-parts":[[2021,10,13]],"date-time":"2021-10-13T21:48:39Z","timestamp":1634161719000},"page":"3518","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["First-Principle Study on p-n Control of PEDOT-Based Thermoelectric Materials by PTSA Doping"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1663-1814","authenticated-orcid":false,"given":"Hideki","family":"Arimatsu","sequence":"first","affiliation":[{"name":"Department of Mechanical Engineering, Tokyo City University, Tokyo 158-8557, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuki","family":"Osada","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, Tokyo City University, Tokyo 158-8557, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ryo","family":"Takagi","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, Tokyo City University, Tokyo 158-8557, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4626-6010","authenticated-orcid":false,"given":"Takuya","family":"Fujima","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, Tokyo City University, Tokyo 158-8557, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,10,13]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"102","DOI":"10.1109\/MCOM.2015.7120024","article-title":"Wireless energy harvesting for the Internet of Things","volume":"53","author":"Kamalinejad","year":"2015","journal-title":"IEEE Commun. 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