A compound of Formula I ##STR00001## wherein: ring B is a 5-membered heterocyclic ring, or a 6-membered carbocyclic ring; each of X.sup.1 and X.sup.2 is independently C, CR, or N, with at least one of them being C; each of X.sup.3-X.sup.11 is independently C, CR, or N, with at least one of them being N, and two adjacent of X.sup.3-X.sup.7 are carbon-fused to the shown moiety through the linkage indicated by the two squiggly lines; Y is selected from the group consisting of O, S, Se, NR′, CR′R″, and SiR′R″; each of R.sup.A and R.sup.B independently represents zero, mono, or up to a maximum allowed substitution to its associated ring; each of R, R′, R″, R.sup.A, and R.sup.B is independently a hydrogen or a substituent selected from the group consisting of —SiR.sup.1R.sup.2R.sup.3 or —GeR.sup.1R.sup.2R.sup.3, deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, boryl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof, with at least one of R.sup.A or R.sup.B comprising —SiR.sup.1R.sup.2R.sup.3 or —GeR.sup.1R.sup.2R.sup.3; each of R.sup.1, R.sup.2, and R.sup.3 is independently selected from the group consisting of alkyl, aryl group, heteroaryl group, and combinations thereof; and any two substituents are optionally joined or fused to form a ring where chemically feasible.

A compound of Formula I

##STR00001##

wherein:

ring B is a 5-membered heterocyclic ring, or a 6-membered carbocyclic ring;

each of X.sup.1 and X.sup.2 is independently C, CR, or N, with at least one of them being C;

each of X.sup.3-X.sup.11 is independently C, CR, or N, with at least one of them being N, and two adjacent of X.sup.3-X.sup.7 are carbon-fused to the shown moiety through the linkage indicated by the two squiggly lines;

Y is selected from the group consisting of O, S, Se, NR′, CR′R″, and SiR′R″;

each of R.sup.A and R.sup.B independently represents zero, mono, or up to a maximum allowed substitution to its associated ring;

each of R, R′, R″, R.sup.A, and R.sup.B is independently a hydrogen or a substituent selected from the group consisting of —SiR.sup.1R.sup.2R.sup.3 or —GeR.sup.1R.sup.2R.sup.3, deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, boryl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof, with at least one of R.sup.A or R.sup.B comprising —SiR.sup.1R.sup.2R.sup.3 or —GeR.sup.1R.sup.2R.sup.3;

each of R.sup.1, R.sup.2, and R.sup.3 is independently selected from the group consisting of alkyl, aryl group, heteroaryl group, and combinations thereof; and

any two substituents are optionally joined or fused to form a ring where chemically feasible.

An object is to provide a semiconductor material and coating having high solubility in solvents and having advantageous filling property, high heat resistance, and/or high etching resistance. Another object is to provide a method for manufacturing a semiconductor using the semiconductor material. Still another object is to provide a novel compound. Provided are: a semiconductor material consisting of a specific aromatic hydrocarbon ring derivative; methods for manufacturing a coating and a semiconductor using the semiconductor material; and a compound consisting of a specific aromatic hydrocarbon ring derivative.

It is an object of the present invention to provide an organic EL device in which, as a highly efficient and highly durable organic EL material, various materials excelling in electron injection/transport performance, hole blocking performance, hole resistance performance, exciton confinement performance, stability in a film state, and durability, are combined so that properties of each material can be effectively demonstrated, thereby achieving (1) high light emission efficiency and power efficiency, (2) low luminescence starting voltage, (3) low practical driving voltage, and (4) particularly long lifetime. An organic EL device including at least a anode, a hole transport layer, a light-emitting layer, a hole blocking layer, an electron transport layer, and a cathode in this order, characterized in that the hole blocking layer includes a compound having a benzoazole structure represented by the following general formula (1). ##STR00001##
(In the formula, Ar.sup.1 and Ar.sup.2 may be the same or different from each other and each represent a hydrogen atom, a deuterium atom, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted fused polycyclic aromatic group, or a substituted or unsubstituted aromatic heterocyclic group. Y.sub.1 represents a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted fused polycyclic aromatic group, a substituted or unsubstituted aromatic heterocyclic group, a straight-chained or branched alkyl group that has 1 to 6 carbon atoms and may have a substituent group, a cycloalkyl group that has 5 to 10 carbon atoms and may have a substituent group, or a straight-chained or branched alkenyl group that has 2 to 6 carbon atoms and may have a substituent group. X represents an oxygen atom or a sulfur atom. Z.sub.1 and Z.sub.2 may be the same or different from each other and each represent a carbon atom or a nitrogen atom).

An organic electroluminescence device comprising: a cathode, an anode, and an organic layer disposed between the cathode and the anode, wherein the organic layer comprises a compound represented by the following formula (1), and a compound A having a Stokes shift of 20 nm or smaller and an emission peak wavelength of 440 nm to 465 nm (at least one of Ar.sub.1 and Ar.sub.2 is a monovalent group having a structure represented by the following formula (2)).

##STR00001##

A compound represented by the following formula (1), wherein in the formula, L.sub.1 and L.sub.2 are predetermined linking groups, and Ar.sub.1 is a monovalent group having a structure represented by the following formula (2).

##STR00001##

The invention relates to novel pure organic emitter molecules and optoelectronic devices containing these organic emitter molecules. According to the invention, in the optoelectronic device, after the excitation of an organic molecule, relaxation and intersystem crossing processes also result from the almost isoenergetic charge transfer triplet state (.sup.3CT) for the direct rapid occupation and emission of the charge transfer singlet state (.sup.1CT), so that a .sup.1CT.fwdarw.S.sub.0 fluorescence occurs without a thermal activation.

A compound of the following Formula I

##STR00001##

is provided. In Formula I, A is C, B, Si, Ge, or Sn; each of X.sup.1 to X.sup.22 is independently C or N; Z.sup.1 and Z.sup.2 are each independently B or N; when A is B, one of X.sup.4, X.sup.5, X.sup.12, and X.sup.22 is N, and the remainder are C; when A is C, at least one of Z.sup.1 and Z.sup.2 is B; each of Y.sup.1, Y.sup.2, Y.sup.3, and Y.sup.4 is independently O, S, Se, NR, CRR′, SiRR′, GeRR′, and SnRR′; one of both of Y.sup.1 and Y.sup.2 are present; one of both of Y.sup.3 and Y.sup.4 are present; each R, R′, R.sup.A, R.sup.B, R.sup.C, R.sup.D, R.sup.E, and R.sup.F is independently hydrogen or a variety of substituents; and any two adjacent R, R′, R.sup.A, R.sup.B, R.sup.C, R.sup.D, R.sup.E, and R.sup.F can be joined or fused to form a ring. Devices, consumer products, and formulations including the compound are also disclosed.

A display panel and a manufacturing method thereof are provided. The manufacturing method of the display panel include following blocks: providing a light-emitting element; coating a polymer solution on a light-emitting element and performing a first annealing process to the light-emitting element after it is coated with the polymer solution to form a first protecting layer; and coating an organic compound solution on the first protecting layer so that the organic compound solution is self-assembled on the first protecting layer to form a second protecting layer, wherein the second protecting layer has a crosslinking three-dimensional network structure.

The present disclosure relates to a plurality of host materials comprising a first host material comprising a compound represented by formula 1, and a second host material comprising a compound represented by formula 2, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds of the present disclosure as host materials, it is possible to provide an organic electroluminescent device having higher luminous efficiency and/or longer lifetime properties as compared with a conventional organic electroluminescent device.