|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Alloys and Compounds for Thermoelectric and Solar Cell Applications V
||L-12: Bi0.5Sb1.5Te3 Thin Films with Bulk-like Thermoelectric Properties on Glass and Flexible Substrates
||Elli Symeou, Christiana Nicolaou, Ioannis Giapintzakis
|On-Site Speaker (Planned)
Localized cooling in micro- and nano-electronics as well as energy autonomy in applications such as wireless sensor networks and wearable electronics could be well served by thin film thermoelectric devices fabricated on solid and/or flexible substrates. Bi0.5Sb1.5Te3 is considered to be a state-of-the-art p-type thermoelectric material, near room temperature, due to its high power factor value. Nevertheless, the deposition of Bi0.5Sb1.5Te3 thin films with bulk-like thermoelectric properties remains a great challenge. We have grown p-type Bi0.5Sb1.5Te3 thin films onto different types of substrates such as fused silica and Kapton using pulsed laser deposition. The films were grown at room temperature and then were subjected to a post-deposition ex-situ annealing process. In this poster presentation, we will discuss how the thermoelectric properties of the obtained films are affected by the substrate type and stoichiometry. The power factor values of our post-annealed films are similar to those of the best bulk materials.
||Planned: Supplemental Proceedings volume