Bi2Te3 and Sb2Te3 Thin Films with Enhanced Thermoelectric Properties for Flexible Thermal Sensors

Proceedings

Grilo, José¹  Vieira, Eliana²  Pires, Ana Lucia³  Silva, Manuel Fernando⁴  Figueira, Joana⁵ 

[1] Author to whom correspondence should be addressed.;CMEMS-UMINHO, University of Minho, Campus Azurem, 4804-533 Guimaraes, Portugal;IFIMUP and IN-Institute of Nanoscience and Nanotechnology, Physics and Astronomy Department, Faculty of Science of University of Porto, Rua Campo Alegre, 687, 4769-007 Porto, Portugal;Presented at the Eurosensors 2018 Conference, Graz, Austria, 9–12 September 2018;i3N/CENIMAT, Department of Materials Science, Faculty of Science and Technology, Universidade NOVA de Lisboa and CEMOP/UNINOVA, Campus de Caparica 2829, 516 Caparica, Portugal

关键词: telluride alloys;    flexible materials;    thermoelectricity;    IR sensor device;   

DOI  :  10.3390/proceedings2130815

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

The influence of substrate type in boosting thermoelectric properties of co-evaporated Bi2Te3 and Sb2Te3 films (with 400 nm-thick) is here reported. Optimized power factor values are 2.7 × 10−3 W K−2 m−1 and 1.4 × 10−3 W K−2 m−1 for flexible Bi2Te3 and Sb2Te3 films, respectively. This is an important result as it is at least 2 times higher than the power factor found in the literature for flexible Bi2Te3 and Sb2Te3 films. A flexible infrared thermopile sensor was developed with high detectivity (2.50 × 107 cm √HzW−1).

【 授权许可】

CC BY