Perovskite Light-Emitting Composition With Inorganic Fine Particles

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Solution Overview

Problem

The composition containing a perovskite compound as a light-emitting material has a low quantum yield, which needs to be improved for industrial applications.

Innovation Solution

Incorporating inorganic fine particles with a specific surface area of 0.01 m2/g to 150 m2/g into the perovskite compound to enhance light absorption efficiency and reduce defect sites, thereby increasing the quantum yield.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If a perovskite compound is used as a light-emitting material, then the emission intensity can be improved, but the quantum yield remains low

Engineering Contradiction:

Improveemission intensityVSAvoidquantum yield

Core Design Contradiction:

Illumination intensityVSLoss of energy

Solution Approach 1:

The patent creates a composite material system where perovskite compound particles are dispersed in a polymer matrix. This composite structure allows the perovskite to provide high emission intensity while the polymer matrix contributes to overall material stability and processability, resolving the contradiction between emission performance and energy efficiency

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent optimizes the particle size of perovskite compounds (controlling diameter to 100 nm - 10 μm range) and adjusts the composition ratios in the polymer composite to maximize quantum yield while maintaining high emission intensity. These parameter optimizations enable simultaneous improvement of both emission performance and energy conversion efficiency

Inventive Principle:

Principle #35Parameter changes

2Loss of energy

If inorganic fine particles are added to improve light absorption efficiency, then the quantum yield increases, but the device complexity increases

Engineering Contradiction:

Improvequantum yieldVSAvoidcomposition complexity

Core Design Contradiction:

Loss of energyVSDevice complexity

Solution Approach 1:

The patent uses a polymer material as an intermediary matrix to disperse and stabilize the perovskite compound particles. This polymer intermediary simplifies the overall device structure by providing a single-phase composite material that combines the optical properties of perovskite with the processability of polymers, avoiding the need for complex multi-layer structures

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent utilizes the porous or dispersed structure of fine perovskite particles (100 nm - 10 μm diameter) within the polymer matrix to maximize light absorption surface area while maintaining material simplicity. This particle dispersion approach increases quantum yield through enhanced light-matter interaction without requiring complex device architectures

Inventive Principle:

Principle #31Porous materials

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 addition of inorganic fine particles with a specific surface area within this range improves the light absorption efficiency and quantum yield of the perovskite compound, leading to a higher emission intensity and absorption rate.

Implementation Method 1

Incorporating inorganic fine particles with a specific surface area of 0.01 m2/g to 150 m2/g into the perovskite compound to enhance light absorption efficiency

Methodology Applied

Scientific EffectLight absorption: Absorption (EM radiation)