Journal
NATURE COMMUNICATIONS
Volume 10, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-019-08835-5
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Funding
- Key Program of National Natural Science Foundation of china [51632010, 51632005]
- National Basic Research Program of China (973 Program) [2013CB632500]
- foundation of the State Key Lab of Advanced Technology for Material Synthesis and Processing (Wuhan University of Technology)
- Innovation Commission of Shenzhen Municipality [KQTD2016022619565991, KQCX2015033110182370]
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Researches on flexible thermoelectric materials usually focus on conducting polymers and conducting polymer-based composites; however, it is a great challenge to obtain high thermoelectric properties comparable to inorganic counterparts. Here, we report an n-type Ag2Se film on flexible nylon membrane with an ultrahigh power factor similar to 987.4 +/- 104.1 mu Wm(-1)K(-2) at 300 K and an excellent flexibility (93% of the original electrical conductivity retention after 1000 bending cycles around a 8-mm diameter rod). The flexibility is attributed to a synergetic effect of the nylon membrane and the Ag2Se film intertwined with numerous highaspect- ratio Ag2Se grains. A thermoelectric prototype composed of 4-leg of the Ag2Se film generates a voltage and a maximum power of 18 mV and 460 nW, respectively, at a temperature difference of 30 K. This work opens opportunities of searching for high performance thermoelectric film for flexible thermoelectric devices.
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