Borane Compound for OLED Voltage Stability
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Solution Overview
Problem
Existing organic electronic devices, such as OLEDs, face challenges in improving initial voltage, efficiency, and voltage stability, particularly in their charge transport materials and layers.
Innovation Solution
Incorporating a borane compound with a boron atom in the oxidation state (III) and specific anionic ligands into the organic electronic device's layers, such as hole injection, transport, or generating layers, to enhance electronic properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional charge transport materials are used in OLEDs, then the device structure is simple and ease of manufacture is maintained, but initial voltage, efficiency, and voltage stability are insufficient
Solution Approach 1:
The patent modifies the chemical structure of charge transport materials by introducing specific substituents (fluoro, cyano, trifluoromethyl groups) and heteroatom-containing rings (triazine, pyrimidine, pyridine) to optimize HOMO/LUMO energy levels and improve voltage stability without fundamentally changing the device architecture
Solution Approach 2:
The invention combines multiple functional groups and heteroatom-containing rings within single molecular structures to create composite organic compounds that simultaneously provide charge transport, hole injection, and voltage stability functions
2Productivity
If conventional hole injection materials are used, then manufacturing processes remain simple, but initial voltage and efficiency are limited
Solution Approach 1:
The patent introduces specific functional groups (carbazole, triphenylamine) and electron-withdrawing substituents at particular positions in molecular structures to locally enhance hole injection capability and efficiency without requiring complete redesign of the entire material system
Data Source
AI summary
The present invention relates to an organic electronic device or an organic semiconducting material comprising a borane compound a borane compound, the borane compound comprising at least one boron atom in the oxidation state (III) and at least one anionic ligand, the anionic ligand having the formula (Ia) or (Ib)wherein in the formulas (Ia) and (Ib)A1 to A6 are independently selected from the group consisting of CO, SO2 or PDX1;X1 is independently selected from the group consisting of halide, nitrile, halogenated or perhalogenated C1 to C20 alkyl, halogenated or perhalogenated C6 to C20 aryl, and halogenated or perhalogenated heteroaryl having 5 to 20 ring-forming atoms; andR1 to R6 are independently selected from the group consisting of substituted or unsubstituted C1 to C20 alkyl, substituted or unsubstituted C1 to C20 heteroalkyl, substituted or unsubstituted C6 to C20 aryl, and substituted or unsubstituted C5 to C20 heteroaryl, wherein it may be provided that R1 and R2 are linked to each other to form a ring;as well as to a respective borane compound.