A sensor for continuously testing the static pressure of a direct-current output schottky diode and a preparation method and application thereof

The Schottky diode sensor with carbon-plated copper foil electrode/n-type germanium/tin foil structure achieves continuous DC output by utilizing the reduction of the potential barrier under static compression. This solves the self-powered sensing requirement under static compression conditions, breaks through the application of inorganic n-type semiconductors in the field of Schottky DC piezoelectric, and is suitable for various static force monitoring scenarios.

CN121677990BActive Publication Date: 2026-04-24TIANJIN POLYTECHNIC UNIV
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Patent Information

Application Number
CN202610187100.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2026-02-10
Publication Date
2026-04-24
Estimated Expiration
2046-02-10

AI Technical Summary

Technical Problem

Existing Schottky DC power generation sensors mainly operate under dynamic compression or friction conditions, while research on static compression conditions is relatively scarce. Furthermore, the application of inorganic n-type semiconductor materials in this field is lacking, making it impossible to continuously output DC power to meet the self-powered sensing requirements.

Method used

A Schottky diode sensor employing a carbon-plated copper foil electrode/n-type germanium/tin foil sandwich structure is encapsulated in a resin film. It achieves continuous DC output by utilizing the reduction of the potential barrier of the Schottky contact under static compression, combined with the high carrier mobility and chemical stability of inorganic n-type germanium material.

Benefits of technology

It can stably output DC power under static compression conditions to achieve self-powered sensing, and is suitable for fields such as medical monitoring, artificial intelligence, building safety and intelligent transportation. It provides continuous static force monitoring without the need for external power supply.

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Abstract

The application provides a direct-current output Schottky diode sensor for continuously testing static pressure and a preparation method and application thereof. The inside of the sensor is sequentially provided with a first electrode, n-type germanium and a second electrode from top to bottom, and the outside of the sensor is packaged with a resin film. The work function of the first electrode is 4.0-4.4 eV, and the first electrode forms an ohmic contact with the n-type germanium. The work function of the second electrode is greater than 4.4 eV, and the second electrode forms a Schottky contact with the n-type germanium. The thickness of the n-type germanium is 0.7-3.5 mm, the thickness of the first electrode is 0.1-1 mm, and the thickness of the second electrode is 0.1-1 mm. The application breaks through the limitation that a traditional piezoelectric generator needs dynamic stimulation and generates an instantaneous alternating current signal, and realizes continuous output of direct current under static pressure. The application can be applied to multiple fields as a self-powered sensor and is used for long-term monitoring of static mechanical stimulation.
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