3results about How to "Low sublimation temperature" patented technology

This invention provides a fused heterocyclic compound and its organic electroluminescent device, specifically relating to the field of organic electroluminescent materials technology. The fused heterocyclic compound provided by this invention possesses excellent electron transport capabilities, suitable HOMO and LUMO energy levels, and a high triplet energy level, which can reduce the electron transport barrier and improve the balance of electron and hole transport. Simultaneously, it can effectively confine holes within the luminescent layer, increasing the probability of effective exciton recombination, thereby reducing the driving voltage, improving luminous efficiency, and extending device lifetime. Furthermore, this fused heterocyclic compound exhibits strong rigidity and a high glass transition temperature, making it less prone to crystallization and aggregation during vapor deposition, thus possessing good film-forming properties and thermal stability. This improves the stability of organic electroluminescent devices and extends the lifespan of electronic components.

The application belongs to the technical field of organic electroluminescence, and discloses a compound, a composition containing the compound and a light-emitting device thereof. The compound has a structure shown in the following formula (1) or formula (2): formula (1); formula (2); wherein Y is selected from O or S; X1-X5 are each independently selected from CR0 or N. The compound has a suitable HOMO energy level, is beneficial to the injection of holes, can reduce the accumulation of holes at the interface of a light-emitting layer when the compound is used as a host material of an organic electroluminescence device, thereby significantly reducing the driving voltage of the device, balancing the transport of holes and electrons, and being beneficial to improving the light-emitting efficiency and service life of the device.

The invention relates to the technical field of organic light-emitting diodes, in particular to IPC C07, and more particularly relates to an OLED light-emitting organic material and an OLED light-emitting device thereof. The OLED light-emitting organic material provided by the invention comprises a naphthoalicyclic ring structure, and the electron donating ability of molecules is improved, so that the electron transfer ability is improved, holes are stabilized, and the stability of the molecules is further improved. When the compound is applied to the organic electroluminescent device, the device can have high efficiency, molecules have high stability, the luminous efficiency of the device can be further improved, and the service life of the device can be further prolonged.