Organic Semiconductor Polymer with Chrysene Core for High Mobility

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Solution Overview

Problem

Existing organic semiconductor elements lack sufficient carrier mobility and heat resistance, which are essential for improved performance in displays and high-temperature applications.

Innovation Solution

A polymer with a repeating unit featuring a chrysene fused ring group and a specific 5-membered aromatic heterocycle, such as a thiophene or pyrrole ring, is used to create an organic semiconductor film that enhances carrier mobility and heat resistance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional organic semiconductor materials are used, then the device can be manufactured with existing processes, but the carrier mobility is insufficient and heat resistance is poor

Engineering Contradiction:

Improvecarrier mobility and heat resistanceVSAvoidmanufacturing process complexity

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent changes the chemical parameters of the organic semiconductor material by introducing a specific molecular structure with chrysene core and benzene rings at terminal positions. This structural parameter change enables simultaneous improvement of carrier mobility and heat resistance while maintaining compatibility with existing manufacturing processes

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention creates a composite molecular structure combining chrysene core with benzene rings and specific heteroatom-containing groups. This composite structure achieves synergistic effects that improve both carrier mobility and heat resistance beyond what single-component materials can provide

Inventive Principle:

Principle #40Composite materials

2Adaptability or versatility

If the organic semiconductor element is exposed to high-temperature environment, then the device can operate in broader conditions, but the carrier mobility deteriorates due to poor heat resistance

Engineering Contradiction:

Improvehigh-temperature environment compatibilityVSAvoidcarrier mobility under high temperature

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent modifies the thermal stability parameters of the organic semiconductor through specific molecular design. The chrysene-based structure with benzene rings at terminal positions provides enhanced thermal stability, allowing the material to maintain its carrier mobility properties even when exposed to high-temperature environments

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS10971686B2Organic semiconductor element, polymer, organic semiconductor composition, and organic semiconductor film

Publication Date: 2021.04.06 FUJIFILM CORP

AI summary

Provided are an organic semiconductor element including an organic semiconductor film that includes a polymer having a repeating unit represented by the following Formula (1), the polymer, and an organic semiconductor composition and an organic semiconductor film including the polymer.In the formula, Z represent a 5-membered aromatic heterocycle. RC1 and RC2 each independently represent a halogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aromatic hydrocarbon group, or an aromatic heterocyclic group. n1 and n2 each independently represent 0 or 1. RC3 to RC10 each independently represent a hydrogen atom, a halogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aromatic hydrocarbon group, or an aromatic heterocyclic group.