Affiliation:
1. School of Physical Sciences Indian Institute of Technology Mandi Mandi 175075, Himachal Pradesh India
2. New Chemistry Unit International Centre for Materials Science and School of Advanced Materials Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur Bangalore 560064 India
Abstract
AbstractFlexible thermoelectric devices of nanomaterials have shown a great potential for applications in wearable to remotely located electronics with desired shapes and geometries. Continuous powering up the low power flexible electronics is a major challenge. We are reporting a flexible thermoelectric module prepared from silver telluride (Ag2Te) nanowires (NWs), which are chemically transformed from uniquely synthesized and scalable tellurium (Te) NWs. Conducting Ag2Te NWs composites have shown an ultralow total thermal conductivity ~0.22 W/mK surpassing the bulk melt‐grown Ag2Te ~1.23 W/mK at ~300 K, which is attributed to the nanostructuring of the material. Flexible thermoelectric device consisting of 4 legs (n‐type) of Ag2Te NWs on polyvinylidene fluoride membrane displays a significant output voltage (Voc) ~2.3 mV upon human touch and Voc ~18 mV at temperature gradient, ΔT ~50 K, which shows the importance of NWs based flexible thermoelectric devices to power up the low power wearable electronics.
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