Quinoid Compound Films for 800–3000 nm Infrared Sensing
Solution Overview
Problem
Existing imaging devices struggle with improved sensitivity in capturing infrared light, particularly in low illumination conditions, and there is a need for compounds and sensors that exhibit good light absorption characteristics in the infrared wavelength region.
Innovation Solution
A compound represented by Chemical Formula 1, which includes substituted or unsubstituted C3 to C30 quinoid rings and specific electron donating and accepting moieties, is used in a sensor configuration with an infrared photoelectric conversion layer, forming a pn junction and exhibiting peak absorption in the wavelength spectrum of 800 nm to 3000 nm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional imaging devices are used, then general imaging function is provided, but sensitivity in infrared wavelength region is insufficient
Solution Approach 1:
The patent modifies the chemical structure by introducing specific quinoid rings with electron donating and accepting moieties, changing the optical parameters of the compound to achieve peak absorption in the infrared wavelength region (800 nm to 3000 nm), thereby improving infrared sensitivity while maintaining imaging functionality
Solution Approach 2:
The patent creates a composite photoelectric conversion layer by combining the specifically structured compound with other materials to form a pn junction, achieving both infrared absorption capability and efficient photoelectric conversion, thus resolving the contradiction between infrared sensitivity and general imaging adaptability
2Measurement precision
If light absorption in infrared region is enhanced, then infrared sensitivity is improved, but electrical characteristics may deteriorate
Solution Approach 1:
The patent introduces specific functional groups (electron donating and accepting moieties) at particular positions of the quinoid ring structure, creating local regions with different electronic properties that simultaneously enhance infrared absorption and maintain good electrical characteristics through optimized charge transport
Solution Approach 2:
By adjusting the chemical structure parameters of the compound, including the types and positions of substituents on the quinoid ring, the patent optimizes both optical absorption characteristics in infrared region and electrical properties, achieving a balance between sensitivity and reliability
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 enhances the sensitivity of sensors to infrared light, enabling effective use in biometric and security devices with improved light absorption and electrical characteristics.
Implementation Method 1
a sensor separating incident light according to a wavelength and converting each component to an electrical signal
Implementation Method 2
the compound exhibits good light absorption characteristics in an infrared wavelength region
Data Source
AI summary
Disclosed are a compound represented by Chemical Formula 1, and a film, an infrared sensor, and an electronic device including the compound.In Chemical Formula 1, Q1, Q2, X1, X2, R1, R2, and A1 are the same as in the specification.