| 초록 |
There have been numerous reports regarding flexible thermoelectric (FTE) devices that convert the body heat to electrical energy for realizing a wearable electronics. The FTE devices commonly require high mechanical and electrical stabilities under various strain conditions. In general, a film-type TE devices with high rigidity have been reported. But this rigid structure could not accommodate the stress triggered by deformation. It is well known that NW structure, which are inherently flexible and can effectively disperse external stress, is highly desirable for the application of FTE. The aim of this study is preparation of Bi2Te3 NW networks. Our strategy begins with the preparation of Ni acetate/Polyvinyl Alcohol NWs (~498 nm). Then, the prepared NWs resulted in Ni NWs (~128 nm) via heating process. Finally, Bi2Te3 NWs networks (~249 nm) were synthesized via galvanic displacement reaction. And then, the FTE devices based on Bi2Te3 were fabricated by transferring the Bi2Te3 NW networks from rigid substrate onto flexible polymer substrate. We expect that this procedure will be a novel method for fabricate the FTE devices based on the Bi2Te3 NW networks. |
