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Effects of In doping on the structure and electrical transport properties of Cu2SnS3(PDF)

《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

Issue:
2017年03期
Page:
21-25
Research Field:
Publishing date:

Info

Title:
Effects of In doping on the structure and electrical transport properties of Cu2SnS3
Author(s):
SHEN YaweiPAN LinWANG Yifeng
College of Materials Science and Engineering,Nanjing Tech University,Nanjing 210009,China
Keywords:
Cu2SnS3 In doping structure evolution power factor
PACS:
TQ125.1
DOI:
10.3969/j.issn.1671-7627.2017.03.005
Abstract:
Dense bulk ceramics Cu2Sn1-xInxS3 of p-type In doping Cu2SnS3 were prepared by solid state reaction and investigated for structural and electrical transport properties.In-doping at the Sn-site markedly improved the electrical conductivity by implanting holes,with a modest Seebeck coefficient as favored by the triply degenerate state of valence band maximum.A maximum power factor of 0.75 mW/(m·K2)was obtained with x=0.20 of Cu2Sn0.8In0.2S3.The crystal structure of Cu2SnS3 transformed from original monoclinic to tetragonal via cubic symmetry with increasing amount of In,leading to an ordered-disordered change of the cations’ arrangement which would suppress the phonon transport effectively.A high ZT of 0.8 of Cu2Sn0.8In0.2S3 at 673 K was predicted by using the estimated total thermal conductivity based on a theoretical minimum lattice contribution and the Wiedemann-Franz relation,suggesting a great potential of Cu2SnS3 as an ecofriendly thermoelectric candidate.

References:

[1] 席丽丽,杨炯,史迅,等.填充方钴矿热电材料:从单填到多填[J].中国科学(物理学力学天文学),2011,6:706.
[2] ZHAO L D,LO S H,ZHANG Y,et al.Ultralow thermal conductivity and high thermoelectric figure of merit in SnSe crystals [J].Nature,2014,508:373.
[3] QURASHI A.Introduction:an overview of metal chalcogenide nanostructures for renewable energy applications [EB/OL].New Jersey:John Wiley & Sons Inc.,2014.
[4] HE Y,DAY T,ZHANG T,et al.High thermoelectric performance in non-toxic earth-abundant copper sulfide [J].Advanced materials,2014,26:3974.
[5] GE Z H,ZHANG B P,CHEN Y X,et al.Synthesis and transport property of Cu1.8S as a promising thermoelectric compound [J].Chemical communications,2011,47:12697.
[6] DENNLER G,CHMIELOWSKI R,JACOB S,et al.Are binary copper sulfides/selenides really new and promising thermoelectric materials? [J].Advanced energy materials,2014,4:1.
[7] QIU P,ZHANG T,QIU Y,et al.Sulfide bornite thermoelectric material:a natural mineral with ultralow thermal conductivity [J].Energy & environmentscience,2014,7:4000.
[8] SU Z,SUN K,HAN Z,et al.Fabrication of ternary Cu—Sn—S sulfides by a modified successive ionic layer adsorption and reaction(SILAR)method [J].Journal of materials chemistry,2012,22:16346.
[9] ONODA M,CHEN X A,SATO A,et al.Crystal structure and twinning of monoclinic Cu2SnS3 [J].Materials research bulletin,2000,35:1563.
[10] XI L,ZHANG Y B,SHI X Y,et al.Chemical bonding,conductive network,and thermoelectric performance of the ternary semiconductors Cu2SnX3(X=Se,S)from first principles [J].Physical review B,2012,86:1.
[11] SHANNON R D.Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides [J].Acta crystallographica,1976,32:751.
[12] FAN J,SCHNELLE W,ANTONYSHYN I,et al.Structural evolvement and thermoelectric properties of Cu3-xSnxSe3 compounds with diamond-like crystal structures [J].Dalton transactions,2014,43:16788.
[13] GARG J,BONINI N,KOZINSKY B,et al.Role of disorder and anharmonicity in the thermal conductivity of silicon-germanium alloys:a first-principles study [J].Physical review letters,2011,106:173.
[14] KUROSAKI K,YAMANAKA S.Low-thermal-conductivity group 13 chalcogenides as high-efficiency thermoelectric materials [J].Physica status solidi applied research,2013,210:82.

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Last Update: 2017-05-31