Journal
NANO RESEARCH
Volume 5, Issue 12, Pages 888-895Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-012-0272-8
Keywords
Te nanowires; Seebeck effect; thermoelectric nanogenerator; self-powered temperature sensor
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Funding
- Airforce, Multidisciplinary University Research Initiative Program (MURI), U.S. Department of Energy, Office of Basic Energy Sciences [DE-FG02-07ER46394]
- National Science Foundation (NSF)
- National Institute For Materials, Japan
- Knowledge Innovation Program of the Chinese Academy of Sciences [KJCX2-YW-M13]
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [0946418] Funding Source: National Science Foundation
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We have developed a flexible thermoelectric nanogenerator (TENG) that is based on a Te-nanowire/poly(3-hexyl thiophene) (P3HT) polymer composite as the thermoelectric material with a positive Seebeck coefficient of 285 mu V/K. A linear relationship between the output voltage of TENG and the temperature difference across the device was observed. Under a temperature difference of 55 K, two TENGs can provide an output voltage of 38 mV in serial connection, or a current density exceeding 32 nA/mm(2) in parallel connection. We demonstrated that the flexible TENG can be used as a wearable energy harvester by using human body temperature as the energy source. In addition, the TENG can also be used as a self-powered temperature sensor with a response time of 17 s and a reset time of 9 s. The detection sensitivity of the sensor can reach 0.15 K in ambient atmosphere.
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