SENSOR AND ELECTRONIC DEVICE
Patent Information
- Application Number
- DE602021028060
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2021-10-22
- Filing Date
- 2021-10-25
- Publication Date
- 2025-03-26
- Estimated Expiration
- 2041-10-25
AI Technical Summary
Existing infrared sensors face challenges in achieving improved sensitivity in low illumination environments and optimal performance as biometric devices due to limitations in energy band gaps and absorption wavelengths of materials used in their photoelectric conversion layers.
A sensor design incorporating a ternary infrared photoelectric conversion layer with specific energy band gaps and composition ratios of materials, including a third material with a wider energy band gap, which enhances sensitivity and shifts the maximum absorption wavelength to longer wavelengths, improving electrical properties and reducing dark current.
The sensor exhibits enhanced sensitivity in low illumination conditions and improved optical characteristics, enabling effective use in biometric applications by extending the dynamic range and increasing sensing capability.