Doped Graphene Electronic Materials via Local Quality Segmentation

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Solution Overview

Problem

Existing electronic devices lack the ability to efficiently create regions with distinct electronic properties on a graphene substrate, limiting their functionality in forming semiconducting junctions and optoelectronic components.

Innovation Solution

The creation of defined regions on a graphene substrate with different electronic properties through chemical functionalization using various dopant species, which can form semiconducting or optoelectronic junctions and components such as diodes, transistors, and sensors by varying the dopant species, concentration, and attachment patterns.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If chemical functionalization with dopant species is applied to create defined regions with distinct electronic properties, then the functionality and performance of electronic devices are enhanced, but the device complexity and manufacturing difficulty increase

Engineering Contradiction:

ImprovefunctionalityVSAvoiddevice complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies local quality by creating spatially distinct regions on the graphene substrate with different dopant species (n-type and p-type regions) to achieve different electronic properties in specific locations, enabling formation of semiconducting junctions and optoelectronic components with tailored functionality

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent uses composite materials by combining graphene substrate with various dopant species (nitrogen, boron, metal atoms) to create regions with distinct electronic characteristics, forming composite structures that enable diverse electronic and optoelectronic device functionality

Inventive Principle:

Principle #40Composite materials

2Adaptability or versatility

If multiple dopant species are used to create distinct electronic regions, then the electronic property differentiation is improved, but the manufacturing precision requirements increase

Engineering Contradiction:

Improveelectronic property differentiationVSAvoidmanufacturing precision

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent segments the graphene substrate into multiple defined regions, each functionalized with specific dopant species, to create distinct electronic properties (n-type, p-type, semiconducting regions) that can be precisely controlled and positioned for device fabrication

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent changes chemical parameters by introducing different dopant species (nitrogen, boron, metal atoms) and controlling their concentrations and attachment patterns to achieve desired electronic properties including Fermi level, band structure, carrier populations, and mobility in different regions

Inventive Principle:

Principle #35Parameter changes

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

Enables the formation of advanced electronic and optoelectronic devices with tailored properties, enhancing their performance and functionality by creating distinct regions with specific electronic characteristics.

Implementation Method 1

The first defined region is chemically functionalized with a first dopant species and the second defined region is chemically functionalized with a second dopant species

Methodology Applied

Scientific EffectChemical functionalization: Chemical Bonding