Luminescent Element Composition With Silicon-Controlled Aging Suppression
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Solution Overview
Problem
Existing light emitting devices fabricated using certain compositions suffer from insufficient suppression of initial deterioration.
Innovation Solution
A composition for light emitting devices is developed, containing a host material with an aromatic compound having a condensed ring skeleton and a guest material with a heterocyclic group, where the total silicon content is controlled between 7 ppm to 28 ppm by mass, to suppress initial deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional compositions are used for light emitting devices, then device fabrication is achieved, but initial deterioration is not sufficiently suppressed
Solution Approach 1:
The invention applies parameter changes by precisely controlling the silicon atom content within the range of 7-28 ppm by mass in the composition. This specific parameter control transforms the composition's properties to suppress initial deterioration of the light emitting device while maintaining fabrication feasibility.
Solution Approach 2:
The invention uses a composite material approach by combining a host material and a guest material with heterocyclic groups in specific proportions. The host material contains compounds with formulas (FH1), (FH2), or (FH3), while the guest material includes compounds with heterocyclic groups containing B, N, P, O, S, or Se atoms, creating a composite composition that achieves superior deterioration suppression.
2Reliability
If silicon content is not controlled, then composition preparation is simpler, but initial deterioration suppression is insufficient
Solution Approach 1:
The invention establishes a specific parameter range for silicon content (7-28 ppm by mass) that optimizes the suppression of initial deterioration. This parameter specification transforms the manufacturing process from a simple mixing operation to a precision-controlled composition preparation, ensuring reliable device performance.
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 composition effectively reduces initial deterioration of light emitting devices by optimizing the silicon content in the host and guest materials, enhancing device performance.
Implementation Method 1
comprising a first electroluminescent diode and a second electroluminescent diode, the first electroluminescent diode having a first anode, a first cathode, and first quantum dots disposed between the first anode and the first cathode
Implementation Method 2
first electroluminescent diode having a first anode, a first cathode, and first quantum dots disposed between the first anode and the first cathode
Data Source
AI summary
To provide a composition which is useful for production of a light emitting device of which initial deterioration is suppressed, and a light emitting device formed using the composition. A composition for light emitting device containing a host material and a guest material blended therein, wherein the host material contains an aromatic compound having a condensed ring skeleton in which only three or more benzene rings are condensed, the guest material contains a compound having a heterocyclic group containing a carbon atom and at least one selected from the group consisting of a boron atom, a nitrogen atom, a phosphorus atom, an oxygen atom, a sulfur atom and a selenium atom in the ring, and the total amount of silicon atoms contained in the host material and silicon atoms contained in the guest material is over 0 ppm by mass and 28 ppm by mass or less with respect to the total amount of the host material and the guest material.