Deuterated Si-Ge OLED Compounds for Saturated Color Emission
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Solution Overview
Problem
Current organic light-emitting diode (OLED) technologies face challenges in achieving saturated color emission, particularly in red, green, and blue pixels, which are essential for full-color displays, and existing materials lack efficient solutions for optimizing light emission characteristics.
Innovation Solution
A compound of Formula R1R2R3M-L-M′ is introduced, where M is Si or Ge, and L can be various bonds or groups, allowing for the formation of organic layers in OLEDs that enhance light emission properties, including the use of deuterated and fused ring systems to improve electron transport and emission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional organic materials are used in OLEDs, then the device can be fabricated with cost advantages and flexibility, but the light emission characteristics do not achieve saturated color purity in red, green, and blue pixels
Solution Approach 1:
The patent modifies molecular parameters of organic compounds by introducing deuterium substitution and fused ring systems. These parameter changes in the molecular structure enable the material to achieve saturated color emission at red, green, and blue wavelengths while maintaining the cost and flexibility advantages of organic materials.
Solution Approach 2:
The patent employs composite material strategies by combining deuterated organic compounds with fused ring systems in OLED structures. This composite approach allows the material to simultaneously achieve high color purity and maintain the inherent flexibility and cost-effectiveness of organic materials.
2Power
If existing organic materials are used, then the OLED can emit light with reasonable efficiency, but the electron transport and emission efficiency are insufficient for optimized performance
Solution Approach 1:
The patent changes the physical and chemical parameters of organic materials through deuterium substitution and fused ring system integration. These parameter modifications enhance both electron transport efficiency and emission efficiency, achieving optimized performance in OLEDs.
Solution Approach 2:
The patent uses deuterated versions of organic compounds, which are isotopic copies of conventional materials. This copying strategy maintains the basic functionality while improving electron transport and emission efficiency through the deuterium substitution effect.
3Manufacturing precision
If saturated color emission is achieved in red, green, and blue pixels, then full-color display quality is improved, but the complexity of material formulation and device structure increases
Solution Approach 1:
The patent achieves saturated color emission by modifying molecular parameters through deuterium substitution and fused ring systems. These parameter changes enable high color purity in red, green, and blue pixels while maintaining relatively simple material formulation and device structure.
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 compound enables the creation of OLEDs with improved light emission characteristics, specifically in red, green, and blue wavelengths, leading to enhanced color purity and efficiency in full-color displays.
Implementation Method 1
OLEDs make use of thin organic films that emit light when voltage is applied across the device
Data Source
AI summary
Provided are compounds of Formula R1R2R3M-L-M′; wherein M is Si or Ge; L is selected from the group consisting of a direct bond, or selected from the group consisting of O, S, Se, BR, BRR′, PR, CR, NR, C═O, C═S, C═NR, C═CRR′, CRR′, SO, SO2, SiRR′, GeRR′, and P(O)R; when L is a direct bond, M′ is SiR4R5R6 or GeR4R5R6; and when L is not a direct bond, M′ is SiR4R5R6, GeR4R5R6, or one or more hydrocarbon groups provided that at least one of the one or more hydrocarbon groups is a carbocyclic group. Also provided are formulations comprising these compounds. Further provided are organic light emitting devices (OLEDs) and related consumer products that utilize these compounds.