{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T19:56:26Z","timestamp":1791316586560,"version":"4.3.1"},"reference-count":26,"publisher":"Beilstein Institut","license":[{"start":{"date-parts":[[2019,3,4]],"date-time":"2019-03-04T00:00:00Z","timestamp":1551657600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2019,3,4]],"date-time":"2019-03-04T00:00:00Z","timestamp":1551657600000},"content-version":"am","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2019,3,4]],"date-time":"2019-03-04T00:00:00Z","timestamp":1551657600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Beilstein J. Nanotechnol."],"accepted":{"date-parts":[[2019,2,6]]},"abstract":"<jats:p>The present study aims to see the enhancement in thermoelectric properties of bismuth telluride (Bi<jats:sub>2<\/jats:sub>Te<jats:sub>3<\/jats:sub>) annealed at different temperatures (573 and 773 K) through silver (Ag) nano-inclusions (0, 2, 5, 10, 15 and 20 wt %). Transmission electron microscopy (TEM) images of Ag incorporated in Bi<jats:sub>2<\/jats:sub>Te<jats:sub>3<\/jats:sub> annealed at 573 K shows tubular, pentagonal, trigonal, circular and hexagonal nanoparticles with sizes of 6\u201325 nm (for 5 wt % Ag ) and 7\u201330 nm (for 20 wt % Ag). Ag incorporated in Bi<jats:sub>2<\/jats:sub>Te<jats:sub>3<\/jats:sub> annealed at 773 K shows mainly hexagonally shaped structures with particle sizes of 2\u201320 nm and 40\u201380 nm (for 5 wt % Ag) and 10\u201360 nm (for 20 wt % Ag). Interestingly, the samples annealed at 573 K show the highest Seebeck coefficient (<jats:italic>S<\/jats:italic>, also called thermopower) at room temperature (p-type behavior) for 5% Ag which is increased ca. five-fold in comparison to Ag-free Bi<jats:sub>2<\/jats:sub>Te<jats:sub>3<\/jats:sub>, whereas for samples with the same content (5% Ag) annealed at 773 K the increment in thermopower is only about three-fold with a 6.9-fold enhancement of the power factor (<jats:italic>S<\/jats:italic><jats:sup>2<\/jats:sup>\u03c3). The effect of size and shape of the nanoparticles on thermoelectric properties can be understood on the basis of a carrier-filtering effect that results in an increase in thermopower along with a control over the reduction in electrical conductivity to maintain a high power factor yielding a high figure of merit.<\/jats:p>","DOI":"10.3762\/bjnano.10.63","type":"journal-article","created":{"date-parts":[[2019,3,4]],"date-time":"2019-03-04T10:16:40Z","timestamp":1551694600000},"page":"634-643","source":"Crossref","is-referenced-by-count":12,"title":["Enhancement in thermoelectric properties due to Ag nanoparticles incorporated in Bi<sub>2<\/sub>Te<sub>3<\/sub> matrix"],"prefix":"10.3762","volume":"10","author":[{"given":"Srashti","family":"Gupta","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dinesh 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