Third Electrode in Organic Conversion Layer for Radiant Ray Detection
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Solution Overview
Problem
Conventional detection elements with thick organic conversion layers for improved radiant ray detection sensitivity face a decrease in sensitivity due to high voltage requirements, leading to increased potential differences and noise detection from electromagnetic energy changes between electrodes and the earth.
Innovation Solution
Incorporating a third electrode inside the organic conversion layer with applied bias, which is electrically connected to a voltage applying unit and a detection unit, helps maintain a smaller potential difference between external electrodes and the earth, reducing noise interference and preserving detection sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the thickness of the organic conversion layer is increased to improve detection sensitivity of radiant rays other than gamma rays, then detection sensitivity is improved, but high voltage must be applied which creates large potential differences and electromagnetic noise that decreases detection sensitivity
Solution Approach 1:
The organic conversion layer is divided into multiple regions with different thicknesses. The first conversion region has a first thickness while the second conversion region has a second thickness different from the first. This segmentation allows different regions to optimize for different detection needs, improving overall detection sensitivity without requiring uniformly high voltage across the entire layer.
Solution Approach 2:
Different regions of the organic conversion layer are assigned different thicknesses to create local variations in properties. The first conversion region and second conversion region have different thicknesses tailored to their specific detection requirements, allowing each region to operate optimally without contributing to excessive overall voltage requirements and electromagnetic noise.
2Measurement precision
If high voltage is applied to the organic semiconductor layer to maintain detection sensitivity, then detection sensitivity is maintained, but the potential difference between electrodes and earth increases causing electromagnetic noise
Solution Approach 1:
The organic conversion layer is segmented into multiple regions with different thicknesses, allowing the detection function to be distributed across regions rather than requiring uniform high voltage application across the entire layer. This reduces the overall potential difference needed while maintaining detection sensitivity.
Solution Approach 2:
Different regions have different thicknesses optimized for their local detection needs, eliminating the requirement for uniformly high voltage across the entire conversion layer. This local optimization reduces electromagnetic noise generation while preserving detection capability.
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 effectively reduces noise in output signals and maintains detection sensitivity even with high voltage application, preventing electromagnetic noise interference and ensuring effective detection of radiant rays other than gamma rays.
Implementation Method 1
an organic conversion layer (16), which is configured to convert energy of a radiant ray L into charges
Data Source
AI summary
According to an embodiment, a detection element includes a first electrode, a second electrode, an organic conversion layer, and a third electrode. The organic conversion layer is provided between the first electrode and the second electrode, and is configured to convert energy of a radiant ray into a charge. The third electrode is provided inside the organic conversion layer. Bias is applied to the third electrode.