Near-Infrared Photoelectric Diode Film for Low-Light Sensing
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Solution Overview
Problem
Current imaging devices, particularly those using photoelectric diodes, face challenges in detecting light in the near-infrared and infrared spectrum with improved sensitivity, especially in low illumination environments, and lack effective compounds for efficient light absorption and photoelectric conversion.
Innovation Solution
A compound represented by Chemical Formula 1, which exhibits good light absorption properties in the near-infrared spectrum, is integrated into a film, photoelectric diode, and organic sensor, enabling effective light absorption and photoelectric conversion within the wavelength spectrum of 780 nm to 3000 nm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional photoelectric diodes are used for near-infrared detection, then device structure is simple, but sensitivity in low illumination environment is insufficient
Solution Approach 1:
The patent employs composite material strategy by integrating the novel compound (Formula 1) with traditional photoelectric diode structure. This compound combines multiple functional groups (Ar1, Ar2, Z, L1, L2, R1-R6) that work synergistically to enhance near-infrared absorption while maintaining device simplicity. The composite approach resolves the contradiction by achieving high sensitivity through material composition rather than structural complexity.
Solution Approach 2:
The invention changes the optical parameters of the photoelectric diode by introducing a compound with specific light absorption characteristics in the near-infrared region (780-3000 nm). By modifying the chemical structure parameters (substituents Ar1, Ar2, heteroatom Z, linkers L1, L2) to optimize light absorption properties, the patent achieves enhanced sensitivity without complicating the device structure.
2Reliability
If existing compounds are used for light absorption, then manufacturing process is simple, but light absorption efficiency in near-infrared spectrum is insufficient
Solution Approach 1:
The patent optimizes light absorption efficiency by carefully designing the molecular parameters of Compound (1). The chemical structure parameters including aromatic groups (Ar1, Ar2), heteroatom (Z), linkers (L1, L2), and substituents (R1-R6) are tuned to maximize absorption in the 780-3000 nm range. This parameter optimization achieves high absorption efficiency while maintaining ease of manufacture through conventional organic synthesis methods.
Solution Approach 2:
The compound represents a composite molecular structure combining electron-donating and electron-withdrawing groups, heteroatoms, and aromatic systems. This composite molecular design enhances near-infrared absorption efficiency while the modular structure allows for straightforward synthesis through standard organic chemistry techniques, resolving the contradiction between performance and manufacturability.
3Reliability
If photoelectric conversion efficiency is increased for near-infrared light, then imaging performance in low illumination improves, but material complexity increases
Solution Approach 1:
The patent enhances photoelectric conversion efficiency by optimizing the electronic structure parameters of Compound (1). The molecular parameters including heteroatom type (Z = N or CRa), linker connectivity (L1, L2), and substituent positioning (R1-R6) are adjusted to facilitate efficient electron-hole separation and charge transport. This achieves high photoelectric conversion while maintaining material simplicity through a single-molecule design rather than complex multi-layer structures.
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 and efficiency of imaging devices by effectively absorbing and converting near-infrared light, improving performance in low illumination conditions and various applications including biometric devices.
Implementation Method 1
a compound represented by Chemical Formula 1, which exhibits good light absorption properties in the near-infrared spectrum, is integrated into a film, photoelectric diode, and organic sensor, enabling effective light absorption and photoelectric conversion within the wavelength spectrum of 780 nm to 3000 nm
Data Source
AI summary
Disclosed are a compound represented by Chemical Formula 1, a film, a photoelectric diode, an organic sensor, and an electronic device.In Chemical Formula 1, Ar1 and Ar2, Z, L1, L2, and R1 to R6 are the same as defined in the detailed description.