Semiconducting Compounds for Low-Temperature Solution Processing

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Solution Overview

Problem

Existing organic semiconductor materials face challenges in achieving high charge carrier mobility, stability, and cost-effective processing for organic optoelectronic devices under ambient conditions.

Innovation Solution

Development of new semiconducting compounds with specific chemical structures that exhibit good charge transport characteristics, chemical stability, and solubility in common solvents, allowing for low-temperature processing and versatile device fabrication methods.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If conventional organic semiconductor materials are used, then device fabrication is achieved, but charge carrier mobility is insufficient for high-speed performance

Engineering Contradiction:

Improvecharge carrier mobilityVSAvoiddevice performance stability

Core Design Contradiction:

SpeedVSReliability

Solution Approach 1:

The patent modifies the molecular structure parameters of organic semiconductors by introducing specific substituents (alkyl, alkoxy, haloalkyl groups) and core structures (thieno[3,2-b]thiophene, naphthalene diimide) to optimize charge carrier mobility while maintaining environmental stability. This structural parameter optimization enables high-speed device operation without sacrificing reliability

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs composite molecular designs combining electron-rich and electron-deficient units to create p-type and n-type semiconductors with complementary properties. These composite structures achieve both high charge carrier mobility and enhanced stability under ambient conditions

Inventive Principle:

Principle #40Composite materials

2Speed

If high-performance semiconductor materials are used, then charge transport characteristics improve, but processing cost and complexity increase

Engineering Contradiction:

Improvecharge transport characteristicsVSAvoidprocessing cost-effectiveness

Core Design Contradiction:

SpeedVSEase of manufacture

Solution Approach 1:

The patent develops organic semiconductor materials that can be processed using inexpensive, readily available solvents and low-cost fabrication techniques such as solution processing and printing methods, replacing expensive vacuum deposition processes while maintaining high charge transport characteristics

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent optimizes processing parameters including solvent selection, deposition temperature, and film formation conditions to enable cost-effective manufacturing of high-performance semiconductor layers with excellent charge transport properties

Inventive Principle:

Principle #35Parameter changes

3Reliability

If organic semiconductor materials are used, then device fabrication is achieved, but stability under ambient conditions is insufficient

Engineering Contradiction:

Improvestability under ambient conditionsVSAvoiddevice operation efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent designs composite molecular structures with robust core units (thieno[3,2-b]thiophene, naphthalene diimide) that provide inherent stability against environmental degradation while maintaining efficient charge transport, resolving the contradiction between reliability and productivity

Inventive Principle:

Principle #40Composite materials

Data Source

PatentUS9911927B2Compounds having semiconducting properties and related compositions and devices

Publication Date: 2018.03.06 USINVEST LLC

AI summary

Disclosed are new compounds having semiconducting properties. Such compounds can be processed in solution-phase at a temperature of less than about 50° C. into thin film semiconductors that exhibit high carrier mobility and/or good current modulation characteristics.