Organic Surface Emitter With Concave Mirror Vertical Resonator
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Solution Overview
Problem
Existing surface-emitting elements with inorganic semiconductor lasers are restricted by the substrate in terms of emission wavelength, and organic semiconductor lasers face challenges in achieving laser oscillation by current injection and have complex configurations due to resonance in the substrate in-plane direction, leading to issues like optical crosstalk and difficulty in forming dense arrays.
Innovation Solution
A surface-emitting element is developed using an organic semiconductor layer with a concave mirror, where the emission wavelength is not restricted by the substrate, allowing for a vertical resonator structure with a concave mirror and a reflector, enabling efficient laser oscillation and simplifying the device configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If an inorganic semiconductor layer is used in the light emitting layer, then the device structure is simplified, but the emission wavelength is restricted by the substrate
Solution Approach 1:
The patent changes the material parameter from inorganic semiconductor to organic semiconductor, which fundamentally alters the emission wavelength characteristics. Organic semiconductors enable tunable emission wavelengths independent of substrate constraints, resolving the contradiction between structural simplicity and wavelength versatility
Solution Approach 2:
The patent introduces a vertical resonator structure with a concave mirror positioned at a specific distance from the organic semiconductor layer. This vertical dimension arrangement enables laser oscillation without substrate-based wavelength restriction, achieving both simplified structure and wavelength flexibility
2Adaptability or versatility
If organic semiconductor laser is used, then the emission wavelength is not restricted by substrate, but the configuration becomes complex due to resonance in substrate in-plane direction
Solution Approach 1:
Instead of relying on substrate in-plane resonance, the patent inverts the approach by using a vertical resonator structure with a concave mirror. This inversion eliminates the need for complex substrate resonance configurations and reduces optical crosstalk, achieving wavelength versatility with simplified geometry
Solution Approach 2:
The patent employs a concave mirror with curved surface to create the vertical resonator. The spherical curvature of the mirror focuses light efficiently and establishes resonance in the vertical direction, simplifying the overall device configuration while maintaining wavelength flexibility
3Productivity
If organic semiconductor layer with concave mirror is used, then optical crosstalk is reduced and high-density array formation is enabled, but the device configuration becomes more complex
Solution Approach 1:
The patent transitions from in-plane resonance to vertical resonator configuration, moving the resonance function to the vertical dimension. This dimensional change reduces optical crosstalk between adjacent elements, enabling high-density array formation while the standardized vertical structure actually simplifies manufacturing processes
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
This configuration allows for flexible emission wavelength selection, reduces optical crosstalk, enables high-density array formation, and simplifies the manufacturing process, while maintaining stable operation and reducing overheating issues.
Implementation Method 1
at least one organic semiconductor layer that emits light at an emission wavelength
Implementation Method 2
a concave mirror arranged on one side of the organic semiconductor layer
Implementation Method 3
a reflector arranged on the other side of the organic semiconductor layer
Implementation Method 4
vertical resonator structure with a concave mirror and a reflector, enabling efficient laser oscillation
Data Source
AI summary
Provided is a surface-emitting element in which a configuration can be simplified and an emission wavelength is not restricted by a substrate used at the time of manufacturing.A surface-emitting element according to the present technology is a surface-emitting element including at least one light emitting element portion that includes at least one organic semiconductor layer and a concave mirror arranged on one side of the organic semiconductor layer. According to the surface-emitting element of the present technology, it is possible to provide a surface-emitting element in which the configuration can simplified and the emission wavelength is not restricted by the substrate used at the time of manufacturing.