Organic Semiconductor Element With Oriented Mesopores
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Solution Overview
Problem
Existing methods for fabricating organic semiconductor elements using conjugated high molecular compounds face challenges in controlling the orientation of polymer chains, leading to random conduction mechanisms and reduced carrier mobility, which affects the performance of devices like field-effect transistors.
Innovation Solution
A novel electronic element is created by forming a conjugated high molecular compound in a highly anisotropic mesoporous film with oriented tubular mesopores, where the polymer chains are controlled on a macroscopic scale, utilizing main-chain conduction for enhanced carrier mobility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conjugated high molecular compounds are used in a random condition without orientation control, then the fabrication process is simple, but carrier mobility is reduced due to hopping conduction mechanism
Solution Approach 1:
The invention changes the physical state and orientation parameters of the conjugated high molecular compound by introducing it into the oriented mesoporous film structure. The mesoporous film provides a constrained geometric environment that forces the polymer chains to align along the pore orientation direction, transforming the random conformation into an oriented state without complex additional processing steps
Solution Approach 2:
The invention utilizes the oriented mesoporous film as a template structure to control the orientation of conjugated high molecular compounds. The mesoporous film with its ordered pore structure serves as a physical constraint that guides polymer chain alignment, enabling main-chain conduction while maintaining fabrication simplicity through the self-organizing effect of the porous template
2Reliability
If polymer chains are aligned in specific direction to improve carrier mobility, then main-chain conduction is achieved, but the process complexity increases
Solution Approach 1:
The invention performs the orientation control action in advance by pre-forming the oriented mesoporous film structure before introducing the conjugated high molecular compound. The mesoporous film is prepared with controlled pore orientation through established techniques, and then the polymer is introduced into this pre-oriented framework, eliminating the need for complex post-processing alignment steps
Solution Approach 2:
The oriented mesoporous film acts as an intermediary template that mediates between the simple fabrication process and the desired oriented polymer structure. The mesoporous film provides the orienting influence on polymer chains during introduction, serving as a physical mediator that translates the simple pore-forming process into complex polymer orientation without requiring direct complex control of polymer alignment
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 approach results in a high-performance organic semiconductor element with improved carrier mobility and device performance, specifically functioning as a field-effect transistor, by aligning polymer chains in a controlled nanospace within the mesoporous film.
Implementation Method 1
utilizing the main-chain transmission of a conjugated high molecular compound which is orientation controlled at a molecular level
Implementation Method 2
Among polymer chains, carriers migrate by hopping conduction
Data Source
AI summary
The object is to fabricate a novel organic semiconductor element which can effectively utilize the main-chain conduction of a conjugated high molecular compound having semiconductor-like properties. Provided is an electronic element which contains, as components, a pair of electrodes which is formed on a substrate, a mesoporous film in which tubular mesopores, which are orientation controlled in one direction, are formed, the mesoporous film being formed between the electrodes so as to be in contact with the electrodes, a conjugated high molecular compound held in the tubular mesopores, and a third electrode which is electrically insulated from the conjugated high molecular compound and is in contact with the mesoporous film.