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Deviceization of high-performance and flexible Ag2Se films for electronic skin and servo rotation angle control
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Deviceization of high-performance and flexible Ag2Se films for electronic skin and servo rotation angle control
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Journal Article
Deviceization of high-performance and flexible Ag2Se films for electronic skin and servo rotation angle control
2024
Overview
Ag
2
Se shows significant potential for near-room-temperature thermoelectric applications, but its performance and device design are still evolving. In this work, we design a novel flexible Ag
2
Se thin-film-based thermoelectric device with optimized electrode materials and structure, achieving a high output power density of over 65 W m
−2
and a normalized power density up to 3.68 μW cm
−2
K
−2
at a temperature difference of 42 K. By fine-tuning vapor selenization time, we strengthen the (013) orientation and carrier mobility of Ag
2
Se films, reducing excessive Ag interstitials and achieving a power factor of over 29 μW cm
−1
K
−2
at 393 K. A protective layer boosts flexibility of the thin film, retaining 90% performance after 1000 bends at 60°. Coupled with p-type Sb
2
Te
3
thin films and rational simulations, the device shows rapid human motion response and precise servo motor control, highlighting the potential of high-performance Ag
2
Se thin films in advanced applications.
The authors design a flexible Ag
2
Se-based thermoelectric device with optimized electrode materials, structure, and selenization time, capable of various applications including rapid response to human motion signals as electronic skin.
