A light-emitting device and an electronic apparatus (including the light-emitting device) are provided. The light-emitting device includes a first compound represented by Formula 1 and a second compound represented by Formula 2:

##STR00001##

wherein detailed descriptions of Formula 1 and Formula 2 are the same as described in the present specification.

An organic electroluminescence device includes an anode, a cathode, a first emitting layer, and a second emitting layer provided between the first emitting layer and the cathode, in which the first emitting layer includes, as a first host material, a first compound that includes at least one group represented by a formula (11) below, the first compound being represented by a formula (1) below, the second emitting layer includes a second compound represented by a formula (2) below as a second host material, and the first emitting layer is in direct contact with the second emitting layer. L.sub.101 is a single bond or a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms. Ar.sub.101 is a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms. mx is 0, 1, 2, 3, 4, or 5.

##STR00001##

An organic electroluminescence device includes an anode, a cathode, and an emitting layer disposed between the anode and the cathode. The emitting layer comprises a delayed fluorescent compound M2 having at least one deuterium atom and a compound M3 having at least one deuterium atom. A singlet energy S.sub.1(M2) of the compound M2 and a singlet energy S.sub.1(M3) of the compound M3 satisfy the relationship S.sub.1(M3)>S.sub.1(M2).

There is provided herein a process for the synthesis of sulfonyl silanes. There is also provided herein various sulfenylated and sulfonylated silicon-containing compounds made by the process.

The present invention relates to a silicon etching composition, and to a composition for selectively etching silicon with respect to a silicon insulating film.

The etching composition according to the present invention can improve the selective etching ratio of silicon from the surface of the semiconductor on which a silicone oxide film and silicon are exposed.

Silicon compounds may be represented by the following formula:

##STR00001##

Each of R.sup.a, R.sup.b, and R.sup.c may be a hydrogen atom, a halogen atom, a C1-C7 alkyl group, an amino group, a C1-C7 alkyl amino group, or a C1-C7 alkoxy group, R.sup.d may be a C1-C7 alkyl group, a C1-C7 alkyl amino group, or a silyl group represented by a formula of *—Si(X.sup.1)(X.sup.2)(X.sup.3). Each of X.sup.1, X.sup.2, and X.sup.3 may be a hydrogen atom, a halogen atom, a C1-C7 alkyl group, an amino group, a C1-C7 alkyl amino group, or a C1-C7 alkoxy group, and * is a bonding site. In some embodiments, when R.sup.b is the C1-C7 alkyl amino group and R.sup.d is the C1-C7 alkyl group, R.sup.b may be connected to R.sup.d to form a ring. To manufacture an integrated circuit (IC) device, a silicon-containing film may be formed on a substrate using the silicon compound of the formula provided above.

The present invention relates to an organic electroluminescent device comprising a light-emitting layer B containing at least one host compound H of Formula (I) ##STR00001##
wherein each of X′.sub.1 and X′.sub.2 is independently from another selected from the group consisting of nitrogen and an optionally substituted carbon atom, and wherein at least one of R′.sub.1—R′.sub.10 is CN and at least one of R.sub.A—R.sub.E is a substituted silane residue.

Provided are a compound of Formula 1; an organic electric element comprising a first electrode, a second electrode, and an organic material layer formed between the first electrode and the second electrode, comprising a compound of Formula 1 in the organic material layer; and an electronic device comprising the element, which has lowered driving voltage and increased luminous efficiency and life time.

Provided is a method for preparing an epoxy compound having an alkoxysilyl group effectively by using a mild catalyst as well as an aromatic alcohol ring-opening agent. The preparation method for an epoxy compound having an alkoxysilyl group includes: performing a ring opening step by reacting an epoxy compound having an epoxide group, which is a starting material, with an aromatic alcohol ring-opening agent in the presence of a phosphine-based catalyst and an optional solvent so as to obtain an intermediate having a partially ring-opened epoxide group; and performing an alkoxysilylation step by reacting the intermediate having a partially ring-opened epoxide with isocyanate alkoxysilane.

Novel organic metal complexes containing fused isoquinoline type ligands useful as emitters for near infrared OLED devices are disclosed. Such a compound has a first ligand L.sub.A having the Formula: ##STR00001##