126results about How to "Improve fluorescence radiation efficiency" patented technology

The invention discloses a dimethylanthracene-containing compound and an application of the dimethylanthracene-containing compound on an organic electroluminescent device. A structural general formula of the organic compound is shown as a general formula (1). The compound has high glass transition temperature and molecular thermal stability, and appropriate HOMO and LUMO energy level and high Eg, by optimizing a device structure, the photoelectric property of the OLED device and the life of the OLED device are effectively increased.

The invention relates to a pyrene-containing organic compound and application in OLED, and belongs to the technical field of semiconductors, wherein the structure of the compound is represented by a general formula (1). The compound provided by the invention has relatively strong hole transport capability, and the hole injection and transport performance is improved under a proper HOMO energy level; under the proper LUMO energy level, the electron blocking effect is achieved, and the recombination efficiency of excitons in the light-emitting layer is improved; and when the compound is used asa functional layer material of an OLED light-emitting device, exciton utilization rate and high fluorescence radiation efficiency can be effectively improved, efficiency roll-off under high current density is reduced, device voltage is reduced, current efficiency of the device is improved, and service life of the device is prolonged.

The invention discloses a compound taking fluorene as a core, and a preparation method and an application thereof, and belongs to the technical field of semiconductors. The compound provided by the invention has the structure represented by a general formula (I). The invention also discloses the preparation method and the application of the compound taking fluorene as the core. The compound provided by the invention contains fluorene derivatives and six-membered ring derivative structures, has relatively high glass transition temperature and molecular thermal stability, proper HOMO and LUMO energy levels and relatively high Eg, and can effectively improve the photoelectric property of an OLED device and prolong the service life of the OLED device through device structure optimization.

The invention discloses a compound with an aza-spirofluorene structure as a mother nucleus and an application of the compound on organic electroluminescent devices. According to the compound, the aza-spirofluorene structure is used as a nucleus, and the compound has the characteristics of difficult crystallization and difficult gathering among molecules and excellent film-forming property. When the compound is used as a luminescent layer material or an electron barrier layer material of an organic electroluminescent device, current efficiency of the device is greatly improved; and meanwhile, the service life of the device is remarkably improved.

The invention discloses a fluorene-containing compound and an application thereof. The compound has the structure shown in the general formula (1). The compound has higher glass transition temperatureand molecular heat stability, proper HOMO and LUMO energy levels and higher Eg, the photoelectric property of an OLED (organic light emitting diode) device can be effectively improved and the servicelife of the OLED device can be effectively prolonged through structure optimization of the device.

The invention discloses a compound taking carbazole as a core, and applications thereof in organic light-emitting devices. The structure of the compound is represented by formula I, is relatively highin glass transition temperature and molecular heat stability, possesses appropriate HOMO and LUMO energy level, and relatively high Eg, and is capable of improving the photoelectric properties of OLEDs and prolonging the service life of OLEDs through device structure optimization.

The invention discloses compounds taking xanthone as a core and application of the compounds, and belongs to the technical field of semiconductors. The structure of the compounds provided by the invention is shown as a general formula (1) shown in the description. The compounds have a xanthone mother nucleus structure, have relatively high glass transition temperature and molecular thermal stability, proper HOMO and LUMO energy levels and relatively high Eg, and can effectively improve the photoelectric properties of an OLED device and prolong the service lifetime of the OLED device by optimizing the device structure.

The invention discloses an organic compound and an application thereof to an OLED (organic light emission diode) device. The organic compound contains dibenzo six-membered rings, and oxygen atoms, sulfur atoms, C1-10 linear or branched alkyl substituted alkylidene, aryl substituted alkylidene and alkyl or aryl substituted tertiary amide are contained between the two dibenzo six-membered rings. Thecompound has higher glass transition temperature and molecular thermal stability and appropriate HOMO and LUMO energy level, and photoelectric property of the OLED device can be effectively improvedand the service life of the OLED device can be effectively prolonged through structural optimization of the device.

The invention relates to a xanthenes organic compound and application thereof to OLED (Organic Light Emitting Diode). According to the structure of the compound, xanthenes are connected with a carbazole cyclic structure through carbon-carbon bonds. Due to carbon-carbon connection, the chemical stability of a material is improved, living position exposure of branch chain groups is avoided, and the whole molecules are of a relatively large rigid structure, and a high triplet state energy stage (T1) is achieved; in addition, large steric hindrance is achieved, rotation is not easily caused, and a relatively stable three-dimensional structure is achieved, so that the compound has relatively high glass transition temperature and molecular thermal stability; in addition, distribution positions of HOMO (Highest Occupied Molecular Orbital ) and LUMO (Lowest Unoccupied Molecular Orbital) of the compound provided by the invention are separated from each other, so that appropriate HOMO and LUMO energy grades are achieved; therefore, after the compound provided by the invention is applied to an OLED device, the light emission efficiency of the device is improved, and the service life of the device is prolonged.