Organic Light-Receiving Device Solubility Parameter Optimization
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Solution Overview
Problem
Current light-receiving devices and light-emitting and light-receiving apparatuses lack convenience, reliability, and efficiency in their design, particularly in the use of organic compounds for light detection and emission, which affects their performance and functionality.
Innovation Solution
A light-receiving device with a light-receiving layer between electrodes, incorporating an active layer with a perylenetetracarboxylic diimide compound having a specific solubility parameter (SP value) range, and a light-emitting and light-receiving apparatus that includes this device, enabling efficient light detection and emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional organic compounds are used in the active layer, then the device can perform basic light detection and emission, but the reliability and performance are insufficient
Solution Approach 1:
The patent applies parameter changes by specifying a precise solubility parameter range (9.0 ≤ SP value ≤ 11.0) for the organic compound in the active layer. This quantitative parameter control optimizes the compound's interaction with the solvent and electrode materials, thereby improving device reliability and performance while maintaining a relatively simple device structure.
2Measurement precision
If the active layer uses organic compounds with specific SP values, then device performance and sensitivity are improved, but material selection becomes more constrained
Solution Approach 1:
The patent defines a specific parameter range (9.0 ≤ SP value ≤ 11.0) for the organic compound to optimize light detection sensitivity. This parameter specification balances performance improvement with material selection flexibility, allowing researchers to choose from multiple compounds within the acceptable range rather than being limited to a single material.
3Manufacturing precision
If conventional solvents are used for the active layer, then the manufacturing process is simple, but the manufacturing precision and device reliability are insufficient
Solution Approach 1:
The patent specifies a solubility parameter range (9.0 ≤ SP value ≤ 11.0) for the organic compound to ensure proper film formation quality. This parameter control maintains manufacturing simplicity by using conventional solution-based processing methods while achieving superior film uniformity and device reliability through optimized material-solvent interactions.
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 solution provides a highly convenient, reliable, and efficient light-receiving and light-emitting apparatus with improved sensitivity and performance, utilizing organic compounds with optimized solubility parameters for enhanced device reliability and functionality.
Implementation Method 1
a pixel includes a light-emitting element and a photoelectric conversion element
Data Source
AI summary
A novel light-receiving device that is highly convenient, useful, or reliable is provided. A light-receiving device including a light-receiving layer (203) between a pair of electrodes (201, 202) is provided. The light-receiving layer 203 includes an active layer. The active layer includes a first organic compound. An SP value of the first organic compound is greater than or equal to 9.0 [(cal/cm3)1/2] and less than or equal to 11.0 [(cal/cm3)1/2]. Alternatively, a light-receiving device including a light-receiving layer (203) between a pair of electrodes (201, 202) is provided. The light-receiving layer (203) includes an active layer. The active layer includes a first organic compound. An absolute value of a difference in an SP value between the first organic compound and an oxygen-containing solvent except for alcohol is less than or equal to 1.0 [(cal/cm3)1/2].