title: A bottom-up route to enhance thermoelectric figures of merit in graphene nanoribbons.
abstract: We propose a hybrid nano-structuring scheme for tailoring thermal and thermoelectric transport properties of graphene nanoribbons. Geometrical structuring and isotope cluster engineering are the elements that constitute the proposed scheme. Using first-principles based force constants and Hamiltonians, we show that the thermal conductance of graphene nanoribbons can be reduced by 98.8% at room temperature and the thermoelectric figure of merit, ZT, can be as high as 3.25 at T = 800 K. The proposed scheme relies on a recently developed bottom-up fabrication method, which is proven to be feasible for synthesizing graphene nanoribbons with an atomic precision.
authors: Institute for Materials Science and Max Bergmann Center of Biomaterials, Dresden University of Technology, 01062 Dresden, Germany. haldun.sevincli@nano.tu-dresden.de
authors: Hâldun
authors: H
authors: Sevinçli
authors: Cem
authors: C
authors: Sevik
authors: Tahir
authors: T
authors: Caın
authors: Gianaurelio
authors: G
authors: Cuniberti
mesh_terms: D002250:Carbon Radioisotopes / Q000737:chemistry; D006108:Graphite / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D013696:Temperature; D013814:Thermal Conductivity
chemical_list: D002250:Carbon Radioisotopes; D037742:Nanotubes, Carbon; D006108:Graphite
references: Nature. 2008 Jan 10;451(7175):168-71
references: 18185583
references: Proc Natl Acad Sci U S A. 1996 Jul 23;93(15):7436-9
references: 11607692
references: Nat Nanotechnol. 2010 Oct;5(10):701-2
references: 20924391
references: Nat Mater. 2010 Jul;9(7):555-8
references: 20453845
references: J Phys Chem A. 2007 Jul 5;111(26):5678-84
references: 17567110
references: Phys Rev Lett. 2011 Nov 25;107(22):226601
references: 22182036
references: Nano Lett. 2011 Nov 9;11(11):4971-7
references: 21967464
references: Nat Mater. 2011 Jul 22;10(8):569-81
references: 21778997
references: Phys Rev Lett. 2006 Feb 3;96(4):045901
references: 16486849
references: Science. 2009 Jun 19;324(5934):1530-4
references: 19541989
references: J Phys Condens Matter. 2010 Sep 22;22(37):372202
references: 21403189
references: Nano Lett. 2012 Jun 13;12(6):2918-23
references: 22548377
references: Nano Lett. 2009 Feb;9(2):711-5
references: 19128146
references: Phys Rev B Condens Matter. 1993 Jun 15;47(24):16631-16634
references: 10006109
references: Nano Lett. 2010 May 12;10(5):1652-6
references: 20402531
references: Nat Mater. 2012 Jan 10;11(3):203-7
references: 22231598
references: Nature. 2010 Jul 22;466(7305):470-3
references: 20651687
references: Nano Lett. 2008 Mar;8(3):902-7
references: 18284217
references: J Phys Condens Matter. 2012 Jun 13;24(23):233203
references: 22562955
references: Nature. 2008 Jan 10;451(7175):163-7
references: 18185582
references: Nat Mater. 2009 Feb;8(2):83-5
references: 19165205
references: Nature. 2001 Oct 11;413(6856):597-602
references: 11595940
references: ACS Nano. 2011 May 24;5(5):3779-87
references: 21452884
references: Science. 2010 Apr 9;328(5975):213-6
references: 20378814
references: Nano Lett. 2010 May 12;10(5):1645-51
references: 20405895
references: Phys Rev Lett. 2009 Jul 31;103(5):055502
references: 19792512
references: Science. 2002 Sep 27;297(5590):2229-32
references: 12351781