Trans-1,4-Cyclohexane Organic Transistor Material for High Mobility
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Solution Overview
Problem
Existing organic transistor materials face challenges in achieving high carrier mobility and high-temperature stability, limiting their performance and applications.
Innovation Solution
A novel organic transistor material with a trans-1,4-cyclohexane structure featuring a cyclohexyl group as a substituent, which includes an alkyl or haloalkyl side chain, exhibits improved carrier mobility and thermal stability, allowing for both p-type and n-type semiconductor functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional organic transistor materials are used, then the transistor can be produced at lower cost and on plastic substrate, but the carrier mobility and high-temperature stability are insufficient
Solution Approach 1:
The patent modifies the molecular structure parameters of organic transistor materials by introducing trans-1,4-cyclohexane skeletons with specific substituent patterns (Formula 1). This structural parameter change simultaneously achieves high thermal stability (maintaining performance at elevated temperatures) and preserves the advantages of low-cost production methods such as vapor phase epitaxy and printing techniques, resolving the contradiction between reliability and ease of manufacture.
Solution Approach 2:
The invention creates composite molecular structures combining cyclohexane skeletons with various substituents (alkyl groups, haloalkyl groups, phenylene groups, naphthylene groups) as described in Formula 1. These composite structures integrate the thermal stability of cyclic hydrocarbons with the electronic properties of aromatic substituents, achieving both high reliability and compatibility with cost-effective manufacturing processes.
2Reliability
If conventional organic transistor materials are used, then the transistor can be produced at lower cost, but the carrier mobility is insufficient
Solution Approach 1:
The patent optimizes molecular parameters by varying substituents on the trans-1,4-cyclohexane skeleton (different alkyl group sizes, haloalkyl groups, and aromatic substituents). This parameter optimization enhances carrier mobility through improved molecular packing and electronic structure while maintaining compatibility with low-cost production methods like vapor phase epitaxy and printing, thus resolving the contradiction between carrier mobility and production cost.
3Reliability
If conventional organic transistor materials are used, then the transistor can be produced on plastic substrate, but the high-temperature stability is insufficient
Solution Approach 1:
The invention changes the molecular structure parameters by introducing rigid trans-1,4-cyclohexane skeletons with specific substituent patterns. This structural parameter change provides high-temperature stability that maintains performance at elevated temperatures while the materials remain suitable for processing on plastic substrates using conventional low-complexity methods such as vapor phase epitaxy and printing techniques.
Data Source
AI summary
Provided is an organic transistor material characterized by having a trans-1,4-disubstituted cyclohexane structure derived from a compound represented by Formula (1). In Formula (1), X represents a skeleton in which plural phenylene groups or naphthylene groups are linked directly or via a vinyl group, a condensed polycyclic hydrocarbon skeleton, or a heterocyclic compound skeleton; m, n, p, and q each independently represent 0 or 1; and R1 and R2 each independently represent an alkyl group or haloalkyl group having 1 to 15 carbon atoms. This organic transistor material has high carrier mobility and excellent thermal stability.