在含有Bi 3＋、HTeO2＋、Se4＋离子的水溶液中通过电化学方法实现了Bi2Te3-ySey热电薄膜沉积,研究了电沉积Bi2Te3-ySey的阴极极化曲线及热电薄膜的生长过程,通过电子显微镜（SEM）和能谱仪（EDS）等手段对热电薄膜进行了形貌、成分分析。结果表明电解液的离子组成、沉积电位对薄膜成分、形貌有较大影响。在-0.07V沉积电位下制备的热电薄膜Bi2Te2.75Se0.95晶粒大小均匀,结构致密。
Bi2Te3-ySey thermoelectric films were prepared by electrochemical deposition in the aqueous solution containing Bi3＋,HTeO＋2,Se4＋.Cathodic polarization curves and growth processes of thermoelectric films were studied.The morphology and the composition of the films were analyzed by SEM and EDS.The results indicate that the ions concentration in the aqueous solution and the deposition potential play important roles in controlling the composition of the Bi2Te3-ySey compound.The surface morphology of the film deposited at the potential of-0.07V is comparatively compact,the grain size of the gained thermoelectric films is very uniform,and the composition of the film is Bi2Te2.75Se0.95,which is good thermoelectric film.
参考文献
| [1] | Feng Xiao;Carlos Hangarter;Bongyoung Yoo;Youngwoo Rheem;Kyu-Hwan Lee;Nosang V. Myung .Recent progress in electrodeposition of thermoelectric thin films and nanostructures[J].Electrochimica Acta,2008(28):8103-8117. |
| [2] | G. Jeffrey Snyder .Application of the compatibility factor to the design of segmented and cascaded thermoelectric generators[J].Applied physics letters,2004(13):2436-2438. |
| [3] | Hu Huang;Wei-ling Luan;Shan-tung Tu .Influence of annealing on thermoelectric properties of bismuth telluride films grown via radio frequency magnetron sputtering[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,2009(13):3731-3734. |
| [4] | Giani A.;Pascal-Delannoy F.;Foucaran A.;Boyer A.;Boulouz A. .MOCVD growth of Bi2Te3 layers using diethyltellurium as a precursor[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,1998(1/2):99-103. |
| [5] | Makoto Takahashi;Yasuhiko Muramatsu;Takao Suzuki .Preparation of Bi_2 Te_3 Films by Electrodeposition From Solution Containing Bi-Ethylenediaminetetraacetic Acid Complex and TeO_2[J].Journal of the Electrochemical Society,2003(3):C169-C174. |
| [6] | B. Y. Yoo;C.-K. Huang;J. R. Lim;J. Herman;M. A. Ryan;J.-P. Fleurial;N. V. Myung .Electrochemically deposited thermoelectric n-type Bi{sub}2Te{sub}3 thin films[J].Electrochimica Acta,2005(22):4371-4377. |
| [7] | Yi Ma;Annika Johansson;Elisabet Ahlberg;Anders E. C. Palmqvist .A mechanistic study of electrodeposition of bismuth telluride on stainless steel substrates[J].Electrochimica Acta,2010(15):4610-4617. |
| [8] | 王为,卜路霞.n型Bi2Te3-ySey温差电材料薄膜的电化学制备及表征[J].无机化学学报,2006(02):228-232. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%