Infrared Sensor Film Compound for Broad IR Absorption
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Solution Overview
Problem
Current imaging devices and sensors face challenges in effectively capturing and converting infrared light into electrical signals with high sensitivity, especially in low illumination environments, and lack efficient materials for broad infrared light absorption.
Innovation Solution
A compound represented by Chemical Formula 1, which includes a chalcogen-containing heterocyclic group and malononitrile at both terminal ends, is used to create a film and infrared sensor with a peak absorption wavelength in the range of 800 nm to 3000 nm, enabling improved photoelectric conversion properties and sensitivity in the infrared spectrum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional imaging devices and sensors are used, then visible light detection is achieved, but infrared light absorption and sensitivity in low illumination environments are insufficient
Solution Approach 1:
The patent modifies the molecular structure of organic compounds by introducing chalcogen-containing heterocyclic groups and malononitrile terminal groups, which changes the optical parameters to achieve broad infrared absorption from 800 nm to 3000 nm. This structural parameter change enables the sensor to detect infrared light effectively while maintaining visibility in low illumination conditions.
Solution Approach 2:
The patent uses composite organic compounds combining chalcogen-containing heterocyclic groups with malononitrile terminal groups to create a material that simultaneously provides broad infrared absorption and good electrical properties. This composite material approach resolves the contradiction by integrating multiple functional characteristics into a single sensor system.
2Productivity
If broad infrared light absorption is achieved, then photoelectric conversion efficiency improves, but material selection and device complexity increase
Solution Approach 1:
The patent achieves broad infrared absorption (800-3000 nm) by changing the molecular parameters of organic compounds, specifically incorporating chalcogen-containing heterocyclic groups and malononitrile terminal groups. This parameter-based approach allows tuning of absorption characteristics without requiring complex multi-layer device structures, thus improving photoelectric conversion efficiency while controlling device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The compound and sensor exhibit enhanced light absorption and photoelectric conversion capabilities in the infrared range, allowing for improved sensitivity and efficiency in detecting infrared light, even in low illumination conditions, and can be applied in various devices such as biometric and security systems.
Implementation Method 1
A compound, a film, an infrared sensor, a combination sensor, and an electronic device are disclosed... exhibits good light absorption properties and electrical properties in the infrared wavelength spectrum... converting each separate component to an electrical signal
Data Source
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AI summary
A compound is represented by Chemical Formula 1. The compound may be included in, a film, an infrared sensor, a combination sensor, and/or an electronic device. In Chemical Formula 1, X, Y1, Y2, Z1, Z2, Q, R1, and R2 are the same as described in the detailed description.