Fs-pulsed laser deposition of PbTe and PbTe/Ag thermoelectric thin films

被引:13
作者
Bellucci, A. [1 ,2 ]
Cappelli, E. [1 ]
Orlando, S. [3 ]
Medici, L. [4 ]
Mezzi, A. [5 ]
Kaciulis, S. [5 ]
Polini, R. [6 ]
Trucchi, D. M. [1 ]
机构
[1] CNR ISM, Monterotondo Stn, I-00015 Rome, Italy
[2] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy
[3] UOS Tito Scalo Zona Ind, CNR ISM, I-85050 Tito, PZ, Italy
[4] CNR IMAA, I-85050 Tito, PZ, Italy
[5] CNR ISMN, Monterotondo Stn, I-00015 Rome, Italy
[6] Univ Roma Tor Vergata, Dip Sci Tecnol Chim, I-00133 Rome, Italy
来源
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2014年 / 117卷 / 01期
关键词
PERFORMANCE BULK THERMOELECTRICS; DENSITY-OF-STATES; TRANSPORT-PROPERTIES; EPITAXIAL-FILMS; ENHANCEMENT; ABLATION;
D O I
10.1007/s00339-014-8526-9
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
For the first time, thermoelectric thin films were fabricated by femtosecond pulsed laser deposition (fs-PLD) that represents a challenging technological solution for this application since it provides a correct film stoichiometry compared to the starting target, capability of native nanostructuring and a high deposition rate. In particular, this paper shows a preliminary work on PbTe and PbTe/Ag thin films deposited at different substrate temperatures by fs-PLD from a microcrystalline PbTe target. Structural, morphological and compositional characterizations of the deposited films were performed to demonstrate the formation of films composed by crystalline nanograins (about 35 nm size) and characterized by a correct stoichiometry. A remarkable deposition rate of 1.5 nm/s was evaluated. The electrical conductivity and the Seebeck coefficient (thermopower) were measured as a function of operating temperature to derive the thermoelectric power factor that was found to be less than a factor 2 with respect to the bulk materials. Finally, a discussion about the influence of compositional and structural properties of the deposited films on the related thermoelectric performances was presented.
引用
收藏
页码:401 / 407
页数:7
相关论文
共 23 条
[1]   Great reduction of particulates in pulsed laser deposition of Ag-Co films by using a shaded off-axis geometry [J].
Agostinelli, E ;
Kaciulis, S ;
Vittori-Antisari, M .
APPLIED SURFACE SCIENCE, 2000, 156 (1-4) :143-148
[2]   Concentrated solar thermoelectric generators [J].
Baranowski, Lauryn L. ;
Snyder, G. Jeffrey ;
Toberer, Eric S. .
ENERGY & ENVIRONMENTAL SCIENCE, 2012, 5 (10) :9055-9067
[3]   High-performance bulk thermoelectrics with all-scale hierarchical architectures [J].
Biswas, Kanishka ;
He, Jiaqing ;
Blum, Ivan D. ;
Wu, Chun-I ;
Hogan, Timothy P. ;
Seidman, David N. ;
Dravid, Vinayak P. ;
Kanatzidis, Mercouri G. .
NATURE, 2012, 489 (7416) :414-418
[4]  
Biswas K, 2011, NAT CHEM, V3, P160, DOI [10.1038/nchem.955, 10.1038/NCHEM.955]
[5]   Temperature-dependant growth of PbTe pulsed laser deposited films on various substrates [J].
Dauscher, A ;
Dinescu, M ;
Boffoué, OM ;
Jacquot, A ;
Lenoir, B .
THIN SOLID FILMS, 2006, 497 (1-2) :170-176
[6]   Effect of Ag or Sb addition on the thermoelectric properties of PbTe [J].
Dow, H. S. ;
Oh, M. W. ;
Kim, B. S. ;
Park, S. D. ;
Min, B. K. ;
Lee, H. W. ;
Wee, D. M. .
JOURNAL OF APPLIED PHYSICS, 2010, 108 (11)
[7]   New directions for low-dimensional thermoelectric materials [J].
Dresselhaus, Mildred S. ;
Chen, Gang ;
Tang, Ming Y. ;
Yang, Ronggui ;
Lee, Hohyun ;
Wang, Dezhi ;
Ren, Zhifeng ;
Fleurial, Jean-Pierre ;
Gogna, Pawan .
ADVANCED MATERIALS, 2007, 19 (08) :1043-1053
[8]  
Guenault A.M., 1977, J PHYS F MET PHYS, V7, P8
[9]   High performance bulk thermoelectrics via a panoscopic approach [J].
He, Jiaqing ;
Kanatzidis, Mercouri G. ;
Dravid, Vinayak P. .
MATERIALS TODAY, 2013, 16 (05) :166-176
[10]   Enhancement of thermoelectric efficiency in PbTe by distortion of the electronic density of states [J].
Heremans, Joseph P. ;
Jovovic, Vladimir ;
Toberer, Eric S. ;
Saramat, Ali ;
Kurosaki, Ken ;
Charoenphakdee, Anek ;
Yamanaka, Shinsuke ;
Snyder, G. Jeffrey .
SCIENCE, 2008, 321 (5888) :554-557