Silver Carboxylate Ink Composition for Low-Temperature Conductivity
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Solution Overview
Problem
Existing conductive inks require high decomposition temperatures, making them incompatible with substrates that require low processing temperatures, such as those used in flexible electronic and biomedical devices.
Innovation Solution
Development of a conductive ink composition using a silver carboxylate, a dissolving agent, and a catalyst, such as an amine, that decarboxylates or reduces the silver carboxylate at temperatures of 200° C. or less, allowing for the formation of conductive structures compatible with low-temperature substrates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high decomposition temperature is used to form conductive coatings, then electrical conductivity is improved, but substrate integrity is compromised
Solution Approach 1:
The patent changes the chemical parameters of the ink composition by incorporating organic ligands (such as carboxylic acids, phenols, or amines) that form stable complexes with metal particles. These ligands allow the ink to maintain stability and achieve high conductivity at lower processing temperatures (below 200°C) by modifying the decomposition behavior of the precursor materials, thus resolving the contradiction between achieving high conductivity and maintaining substrate integrity.
Solution Approach 2:
The patent creates composite ink formulations by combining metal particles (silver, copper, or nickel) with organic ligands and polymers. This composite approach allows the organic components to act as stabilizers and conductive pathways, enabling the formation of highly conductive coatings at low temperatures without compromising substrate integrity, as the organic matrix protects the metal particles during processing.
2Adaptability or versatility
If low processing temperature is used to maintain substrate integrity, then substrate compatibility is improved, but electrical conductivity is reduced
Solution Approach 1:
The patent introduces organic ligands as intermediary substances that mediate between the metal particles and the substrate. These ligands (such as carboxylic acids, phenols, or amines) form stable complexes with metal particles, enabling low-temperature processing while maintaining both substrate compatibility and electrical conductivity. The intermediaries facilitate charge transfer and maintain structural integrity at lower temperatures.
Solution Approach 2:
The patent modifies the chemical composition parameters of the ink by adding organic stabilizers and ligands that lower the decomposition temperature of metal precursors. This parameter change allows the ink to decompose and form conductive pathways at temperatures below 200°C, achieving both substrate compatibility and high electrical conductivity simultaneously.
3Reliability
If particle-based inks are used to achieve high conductivity, then electrical performance is improved, but processing complexity increases
Solution Approach 1:
The patent merges multiple functions into a single ink formulation by combining metal particles, organic ligands, and polymer stabilizers into one composition. This unified approach eliminates the need for separate synthesis and incorporation steps, reducing processing complexity while maintaining high electrical conductivity. The merged formulation can be directly applied to substrates without additional processing steps.
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
The ink composition enables the formation of highly conductive structures at mild temperatures, maintaining substrate integrity and compatibility with a wide range of patterning techniques, including those used in flexible electronics and biomedical devices.
Implementation Method 1
the catalyst comprises an amine that decarboxylates the silver carboxylate to make the conductive ink composition
Implementation Method 2
a catalyst, wherein the catalyst comprises an amine that decarboxylates the silver carboxylate
Implementation Method 3
the catalyst reduces the silver of the silver carboxylate to make the conductive ink composition, wherein the catalyst comprises an amine
Implementation Method 4
a catalyst that reduces the silver of the silver carboxylate to make the conductive ink composition
Implementation Method 5
at least one dissolving agent that dissolves the silver carboxylate
Data Source
AI summary
A conductive structure is provided. The conductive ink composition includes a silver complex formed by mixing a silver carboxylate, at least one dissolving agent that dissolves the silver carboxylate, and a catalyst. The catalyst includes an amine that decarboxylates the silver carboxylate to make the conductive ink composition. The catalyst decarboxylates the silver carboxylate at a temperature of 100° C. or less. An ink composition comprising a metallic salt with a sterically bulky counter ion and a ligand is also provided. An ink composition for making a conductive structure, comprising a reducible metal complex formed by mixing: a reducing agent, wherein the reducing agent is dissolved in a dissolving agent; and at least one metal salt or metal complex comprising a Group 4, 5, 6, 7, 8, 9, 10, 11, or 12 metal, wherein the reducing agent reduces the metal to forms the conductive structure is further provided.