f28a8b5cf80f5605828359bb398463b0 pmc_34361214.pdf 7a17e3c353fb6de5f90c281acb477f908b0d4d53 pmc_34361214.pdf 17ce855d6cb41936ca8085dfdae1c862ff7ffa42ba3cb8e8263e0fd121d6cc07 pmc_34361214.pdf Title: Enhanced Thermoelectric Performance of n-Type Bi2Se3 Nanosheets through Sn Doping Subject: The cost-effective conversion of low-grade heat into electricity using thermoelectric devices requires developing alternative materials and material processing technologies able to reduce the currently high device manufacturing costs. In this direction, thermoelectric materials that do not rely on rare or toxic elements such as tellurium or lead need to be produced using high-throughput technologies not involving high temperatures and long processes. Bi2Se3 is an obvious possible Te-free alternative to Bi2Te3 for ambient temperature thermoelectric applications, but its performance is still low for practical applications, and additional efforts toward finding proper dopants are required. Here, we report a scalable method to produce Bi2Se3 nanosheets at low synthesis temperatures. We studied the influence of different dopants on the thermoelectric properties of this material. Among the elements tested, we demonstrated that Sn doping resulted in the best performance. Sn incorporation resulted in a significant improvement to the Bi2Se3 Seebeck coefficient and a reduction in the thermal conductivity in the direction of the hot-press axis, resulting in an overall 60% improvement in the thermoelectric figure of merit of Bi2Se3. Keywords: thermoelectric; Bi2Se3; Sn doping Author: Mengyao Li, Yu Zhang, Ting Zhang, Yong Zuo, Ke Xiao, Jordi Arbiol, Jordi Llorca, Yu Liu and Andreu Cabot Creator: LaTeX with hyperref Producer: pdfTeX-1.40.21 CreationDate: Wed Jul 14 13:32:00 2021 CEST ModDate: Wed Jul 14 14:25:37 2021 CEST Tagged: no UserProperties: no Suspects: no Form: none JavaScript: no Pages: 12 Encrypted: no Page size: 595.276 x 841.89 pts (A4) Page rot: 0 File size: 4867547 bytes Optimized: no PDF version: 1.7 name type encoding emb sub uni object ID ------------------------------------ ----------------- ---------------- --- --- --- --------- EYFJXM+VnURWPalladioL Type 1 Custom yes yes no 10 0 GIZSIX+URWPalladioL-Ital Type 1 Custom yes yes no 15 0 UPNDSF+URWPalladioL-Bold Type 1 Custom yes yes no 20 0 FWGGXV+URWPalladioL-Roma Type 1 Custom yes yes no 24 0 BCCBRK+PazoMath-Italic Type 1 Builtin yes yes no 28 0 NPLVPL+TimesNewRomanPS-BoldItalicMT Type 1C WinAnsi yes yes no 36 0 MCBCCI+SourceSansRoman-Regular 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Type 1 Builtin yes yes no 533 0 HYYHEA+CMBSY10 Type 1 Builtin yes yes no 537 0 QITBVI+MSBM10 Type 1 Builtin yes yes no 541 0 Jhove (Rel. 1.22.1, 2019-04-17) Date: 2021-09-11 02:56:07 CEST RepresentationInformation: pmc_34361214.pdf ReportingModule: PDF-hul, Rel. 1.12.1 (2019-04-17) LastModified: 2021-08-23 03:36:57 CEST Size: 4867547 Format: PDF Version: 1.7 Status: Well-Formed and valid SignatureMatches: PDF-hul MIMEtype: application/pdf PDFMetadata: Objects: 676 FreeObjects: 1 IncrementalUpdates: 0 DocumentCatalog: PageLayout: SinglePage PageMode: UseNone Outlines: Item: Title: Introduction Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@13c27452 Item: Title: Materials and Methods Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@262b2c86 Children: Item: Title: Chemicals and Solvents Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@371a67ec Item: Title: Synthesis of Bi2Se3 Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@5ed828d Item: Title: Synthesis of Bi2-xMxSe3 Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@50d0686 Item: Title: Nanomaterial Consolidation Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@7a3d45bd Item: Title: Structural and Chemical Characterization Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@1e7c7811 Item: Title: Performance Characterization of Bulk Nanomaterial Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@77ec78b9 Item: Title: Results and Discussion Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@1a3869f4 Item: Title: Conclusions Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@a38d7a3 Item: Title: References Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@77f99a05 Info: Title: Enhanced Thermoelectric Performance of n-Type Bi2Se3 Nanosheets through Sn Doping Author: Mengyao Li, Yu Zhang, Ting Zhang, Yong Zuo, Ke Xiao, Jordi Arbiol, Jordi Llorca, Yu Liu and Andreu Cabot Subject: The cost-effective conversion of low-grade heat into electricity using thermoelectric devices requires developing alternative materials and material processing technologies able to reduce the currently high device manufacturing costs. In this direction, thermoelectric materials that do not rely on rare or toxic elements such as tellurium or lead need to be produced using high-throughput technologies not involving high temperatures and long processes. Bi2Se3 is an obvious possible Te-free alternative to Bi2Te3 for ambient temperature thermoelectric applications, but its performance is still low for practical applications, and additional efforts toward finding proper dopants are required. Here, we report a scalable method to produce Bi2Se3 nanosheets at low synthesis temperatures. We studied the influence of different dopants on the thermoelectric properties of this material. Among the elements tested, we demonstrated that Sn doping resulted in the best performance. Sn incorporation resulted in a significant improvement to the Bi2Se3 Seebeck coefficient and a reduction in the thermal conductivity in the direction of the hot-press axis, resulting in an overall 60% improvement in the thermoelectric figure of merit of Bi2Se3. 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