N-dopant Metal Complexes for Organic Electron-Conducting Layers
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Solution Overview
Problem
Existing organic electron-conducting layers face limitations in achieving high electron conductivity, as conventional n-dopants often have low sublimation temperatures and structural variability, making them difficult to deposit effectively in thin layers.
Innovation Solution
An organic electron-conducting layer utilizing a novel n-dopant structure with metal complexes, including carbene, vinylidene, and allenylidene ligands, which enhances electron conductivity by increasing the highest occupied molecular orbital (HOMO) level and allows for easy deposition through sublimation processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional n-dopants are used in organic electron-conducting layers, then electron conductivity can be improved, but the dopants have low sublimation temperatures and structural variability making them difficult to deposit effectively in thin layers
Solution Approach 1:
The patent changes the chemical structure of n-dopants by introducing specific metal centers (Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au) coordinated with carbene, vinylidene, and allenylidene ligands. This structural parameter change results in higher sublimation temperatures and improved depositability while maintaining high electron conductivity through the modified HOMO levels of the dopant molecules.
Solution Approach 2:
The patent creates composite n-dopant molecules combining metal centers with organic ligands (carbene, vinylidene, allenylidene). These composite structures exhibit both high electron conductivity and improved thermal stability for deposition, resolving the contradiction between conductivity and ease of manufacture.
2Reliability
If conventional n-dopants are used, then electron conductivity increases, but structural variability and low sublimation temperatures reduce effectiveness in thin layer deposition
Solution Approach 1:
The patent systematically changes the thermal and structural parameters of n-dopants by selecting metals with appropriate sublimation temperatures and coordinating them with rigid ligand structures. This results in dopants that maintain high electron conductivity while having elevated sublimation temperatures suitable for thin layer deposition processes.
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 novel n-dopant structure achieves high electron conductivity and low electrical losses in organic electronic components, improving their performance and efficiency by matching the HOMO level with adjacent layers and allowing for easy deposition in thin layers.
Implementation Method 1
an organic electron-conducting layer comprising an n-dopant having the structure... for increasing electron conductivity in an organic layer
Implementation Method 2
the n-dopant is deposited by means of a sublimation process
Data Source
AI summary
Various embodiments may include an organic electron-conducting layer comprising an n-dopant having the structure:wherein Ln denotes a number n of independently selected ligands L; M is a metal; R and R′ comprise compounds independently selected; n is from 0 to 5; m is from 1 to 6; n+m is from 2 to 6; and x has a value of 0, 1 or 2.