期刊
ADVANCED ENERGY MATERIALS
卷 12, 期 42, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.202202731
关键词
flexible devices; thermal diffusion; thermoelectric legs; thin-films
类别
资金
- National Natural Science Foundation of China [11604212]
- National Natural Science Foundation of Guangdong province of China [2020A1515010515, 2022A1515010929]
- Science and Technology plan project of Shenzhen [20200811230408001]
- Australia Research Council
- QUT capacity building professor program
- Innovation Centre for Sustainable Steel Project
A one-step thermal diffusion method is developed to enhance the leg-electrode contact, thermoelectric performance, bending resistance, and stability of inorganic thin-film thermoelectric devices.
High relative contact electrical resistance and poor flexibility in inorganic thin-film thermoelectric devices significantly limit their practical applications. To overcome this challenge, a one-step thermal diffusion method to fabricate assembly-free inorganic thin-film thermoelectric devices is developed, where the in situ grown electrode delivers an excellent leg-electrode contact, leading to high output power and flexibility in the prepared p-type Sb2Te3/n-type Bi2Te3 thin-film device, which is composed of 8 pairs of p-n junctions. Such a device shows a very low relative contact electrical resistance of 7.5% and a high power density of 1.42 mW cm(-2) under a temperature difference of 60 K. Less than 10% change of the whole electrical resistance before and after bending test indicates the robust bending resistance and stability of the device. This study indicates that the novel assembly-free one-step thermal diffusion method can effectively enhance the leg-electrode contact, the device thermoelectric performance, bending resistance, and stability, which can inspire the development of thin-film thermoelectric devices.
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