Journal
ADVANCED ELECTRONIC MATERIALS
Volume 3, Issue 4, Pages -Publisher
WILEY
DOI: 10.1002/aelm.201600554
Keywords
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Funding
- Singapore Ministry of Education Academic Research Fund Tier 2 [MOE2015-T2-1-066, MOE2015-T2-2-010]
- Nanyang Technological University
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Advances in organic thermoelectric materials have focused on the enhancement of mechanical property to address the limitations and needs of forming flexible and free-standing films for the application of flexible/wearable thermoelectric devices. Herein, thermoelectric nanocomposite films are fabricated based on conductive polymer poly(3,4-ethylenedioxythiophene):poly-(styrenesulfonate) (PEDOT:PSS), plastic reinforcer polyvinyl alcohol (PVA), and inorganic Bi0.5Sb1.5Te3 thermoelectric nanocrystals with various contents. The resulting PEDOT:PSS/PVA/Bi0.5Sb1.5Te3 nanocomposite films exhibit a power factor of 47.7 mu W m(-1) K-2 and a ZT value of 0.05 at 300 K. More importantly, they are mechanically tough, yet very flexible with a tensile strength of 79.3 MPa and a fracture strain of 32.4%, which is sufficient to meet the required mechanical properties of textile manufacturing and body movements for flexible thermoelectric films, thus providing a substantial impact on future developments of flexible/wearable energy generation devices.
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