在导电聚苯胺薄膜上电沉积n型Bi-Te合金薄膜,采用循环伏安、XRD、EDS和SEM等手段分别对电化学沉积过程和产物的结构、形貌及组成等进行了表征,研究了聚苯胺绝缘化处理前后Bi2Te3沉积层热电性能的变化,以及沉积电位对其结构和性能的影响.结果表明:在180℃保温3 h可大大降低聚苯胺薄膜的导电性;阴极电位在-125 mV与-340 mV之间变化时,Bi-Te合金中的Te含量呈近似抛物线变化,且在-125 mV达到最大值67.76%;Te含量不同也相应地改变了沉积层的组织结构和热电性能;基体的导电性影响聚苯胺薄膜的热电参数测试值,通过热处理消除基体的影响后,热电薄膜的塞贝克系数和导电率的测量值分别提高了47.6 μV/K和6.86 x 104 s/m,功率因子从热处理前的1.6x 10-4 W/K2m提高到处理后的14.3 x 10-4W/K2m.
参考文献
| [1] | Rowe D.M,Thermoelectrics,an environmentally-friendly source of electrical power,Renewable Energy,16,1251(1999) |
| [2] | Sales B.C.,Thermoelectric materials-smaller is cooler,Science,295(5558),1248(2002) |
| [3] | Del Frari D,Diliberto S,Stein N,Boulanger C,Lecuire JM,Pulsed electrodeposition of(Bi1-xSbx)2 thermoelectric thin films,J Appl Electrochemistry,36(4),449(2006) |
| [4] | Zou HL,Rowe DM,Williams SGK,Peltier e任bct in a coevaporated Sb2Te3(P)-Bi2Te3(N)thin film thermocouple,Thin Solid Films,408(1-2),270(2002) |
| [5] | Zhang HT,Luo XG,Wang CH,Xiong YM,Li SY,Chen XH,Characterization of nanocrystalline bismuth telluride (Bi2Te3)synthesized by a hydrothermal method,Journal of Crystal Growth,265(3-4),558(2004) |
| [6] | Venkatasubramanian R,Siivola E,Colpitts T,O'Quinn B,Thin-film thermoelectric devices with high roomtemperature figures of merit,Nature,413(6856),597(2001) |
| [7] | H.Zou,D.M.Rowe,G.Min,Preparation and characterization of p-type Sb2Te3 and n-type Bi2Te3 thin films grown by coevaporation,J.Vac.Sci.Technol.A,19,899(2001) |
| [8] | M.S.Martin-Gonzalez,A.L.Prieto,R.Gronsky,T.Sands,A.M.Stacy,Insights into the electrodeposition of Bi2Te3,J.Electrochem.Soc.,149(11),C546(2002) |
| [9] | M.Takahashi,Y.Muramatsu,T.Suzuki,S.Sato,M.Watanabe,K.Wakita,T.Uchida,Preparation of Bi2Te3 films by electrodeposition from solution containing Bi-ethylenediaminetetraacetic acid complex and TeO2,J.Electrochem.Soc.,150,C169(2003) |
| [10] | Luxia Bu,Wei Wang,Hui Wang,Electrodeposition of n-type Bi2Te3-ySey thermoelectric thin films on stainless steel and gold substrates,Applied Surface Science,253,3360(2007) |
| [11] | Wen-Lin Wang,Chi-Chao Wan,Yung-Yun Wang,Composition-dependent characterization and optical control of electrodeposited Bi2Te3 films for thermoelectric application,Electro chimica Acta,52,6502(2007) |
| [12] | S.Michel,S.Diliberto,C.Boulanger,N.Stein,J.M.Lecuire,Galvanostatic and potentiostatic deposition of bismuth telluride films from nitric acid solution:effect of chemical and electrochemical parameters,Journal of Crystal Growth,277,274(2005) |
| [13] | B.Y.Yoo,C.-K.Huang,J.R.Lim,J.Herman,M.A.Ryan,N.V.Myung,Electrochenmically deposited thermoelectric n-type Bi2Te3 thin films,Electrochimica Acta,50,4371(2005) |
| [14] | Xiaochuan Xu,Lidong Chen,Chunfen Wang,Qin Yao,Chude Feng,Template synthesis of heterostructured polyaniline/Bi2Te3 nonowires,Journal of Solid State Chemistry,178,2163(2005) |
| [15] | JING Xiabin,WANG Lixiang,WANG Xianhong,GENG Yanhou,WANG Fosong,Synthesis,structure,properties and applications of conducting polyaniline,Acta Polymerica Sinica,5(5),656(2005)(景遐斌,王利祥,王献红,耿廷候,王佛松,导电聚苯胺的合成,结构、性能和应用,高分子学报,5(5),656(2005)) |
| [16] | R.Ansari,W.E.Price,G.G.Wallace,Effect of thermal treatment on the electroactivity of polyaniline,Polymer,37(6),917(1996) |
| [17] | Doriane Del Frari,Sebastein Diliberto,Nicolas Stein,Clotilde Boulanger,Jean-Marie Lecuire,Comparative study of the electrochemical preparation of Bi2Te3,Sb2Te3,and(BixSb1-x)2Te3 films,Thin Solid Films,483,44(2005) |
| [18] | N.Mateeva,H.Niculescu,J.Schlenoff,L.R.Testardi,Correlation of Seebeck coefficient and electric conductivity in polyaniline and polypyrrole,Journal of Applied Physics,83(6),3111(1997) |
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